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Open Access Article
1 - The texture ordering in L10-FePt–Ag nanocomposites
R. Roghani S. A. Sebt A. Khajehnezhad -
Open Access Article
2 - Comparative study of behavior of electrical conductivity in KI‒Al2O3 and KI‒TiO2 heterostructure composites
Suhail Iqbal Wani Nazli Zeeshan Rafiuddin -
Open Access Article
3 - Study on the Optical and Rheological properties of polymer- layered Silicate Nanocomposites
Milad Edraki Mohammad Banimahd Keivani -
Open Access Article
4 - Synthesis of Silver Nanoparticles with Sodium Brohydrate by Chemical Revival Method to Produce Biodegradable Antibacterial Silver Nanocomposite by Solution Blending Production of biodegradable antibacterial silver nanocomposites
Zahra Ta'ati jafroudi hamed ahari nekisa sohrabi haghdostBackground and Objective: This study aimed to investigate the antibacterial effect of silver nanoparticles on Gram-negative and Gram-positive bacteria and producing silver nanocomposites with suitable and biodegradable antibacterial properties by Solution Blending metho MoreBackground and Objective: This study aimed to investigate the antibacterial effect of silver nanoparticles on Gram-negative and Gram-positive bacteria and producing silver nanocomposites with suitable and biodegradable antibacterial properties by Solution Blending method. Method: To investigate the antimicrobial properties of silver nanoparticles, silver nanoparticles were first synthesized by NaBH4 reduciton and after performing UV-VIS, DLS, XRD and TEM and FT-IR tests, Staphylococcus aureus as a Gram-positive, Escherichia coli as a Gram-negative bacteri was used, investigated by MIC, MBC and Inhibition Zone. In the next step, the nanocomposite was prepared and prepared by Solution Blending method and its antibacterial activity was evaluated by Inhibition Zone method. Findings: The results showed that silver nanoparticles had inhibitory effect on Staphylococcus aureus, Escherichia coli and Candida albicans at concentrations of 50, 20 and 355 μg / ml respectively and also at concentrations of MIC. 60, 40 and 370, respectively, have the lethal effect on the aforementioned microorganisms (MFC, MBC). A diameter of 3-5 mm was observed around the silver nanoparticles in the cultures of the mentioned microorganisms and in the test of nanocomposite Inhibiion zone, the halo was created based on expected values.the results of the experiments were calculated with 3 replications and the amount of PValue was significant (P<0/0001)by ANOVA method.we used also 3 antibiotic as control for Inhibition zone test. Discussion and Conclusion: Silver nanoparticles showed good inhibitory and lethal effects on Gram-positive and Gram-negative bacteria and Also, the nanocomposites produced by the mentioned method have high antibacterial and viscolastic properties. Manuscript profile -
Open Access Article
5 - Optimum Dioxide Titanium Nanoparticles in Dioxide Titanium /Bentonite Composite for Sonophotocatalytic decolorization of Methyl Orange dye
mahran yosofi Mohammad GhorbanpourBackground and Objectives: Dye is considered as one of the most important environmental pollutants in industrial wastewater due to its harmful effects on both human and environment. This MoreBackground and Objectives: Dye is considered as one of the most important environmental pollutants in industrial wastewater due to its harmful effects on both human and environment. This study was aimed to determine Optimum Dioxide Titanium Nanoparticles in Dioxide Titanium /Bentonite Composite for Sono-photocatalytic de-colorization of Methyl Orange dye. Methods: In this study, bentonite was used as the substrate to stabilize titanium dioxide photo-catalyst and the optimum amount of stabilized titanium dioxide nanoparticles in titanium dioxide/ bentonite composite which was evaluated for sono-photocatalytic removal of methyl orange dye. Accordingly, the optimal conditions for the photocatalytic process performance in dye removal included the effect of pH, methyl orange concentrations and nanocomposite doses. Findings: Structural properties of bentonite/titanium Dioxide composites and pure titanium dioxide nanoparticles were investigated using scanning electron microscope (SEM), Diffuse Reflectance Spectroscopy (DRS) and X-ray diffraction (XRD). Finally, the possibility of reuse of photo-catalyst was investigated in three periods. Based on SEM results, reducing the amount of titanium dioxide reduced the number of nanoparticles formed on the bentonite surface. XRD and DRS analyses showed successful composite formation. The optimum amount of titanium dioxide nanoparticles in titanium dioxide/bentonite composite was obtained for sono-photocatalytic dye removal of methyl orange with the titanium dioxide powder to bentonite ratio of 1: 2.5 in the primary mixture. Discussion and Conclusion: The study showed that increasing the amount of photo-catalyst in the reaction medium increased the speed and efficiency of the dye removal but its excessive increase had a negative effect on the reaction. The best conditions for dye degradation were obtained using titanium dioxide/bentonite nanocomposite at pH 4. According to the results, the increase in concentration increased dye removal time. Finally, the sono-photocatalytic composite efficiency was acceptable after three times of reuse. Manuscript profile -
Open Access Article
6 - Antimicrobial and Photocatalytic Properties of Bentonite/Titanium Dioxide Nanocomposites Doped with Silver
mahsa Madadi Mohammad GhorbanpourBackground and Objective: One of the main applications of titanium dioxide nanoparticles is killing the microorganisms spatially in drinking water and wastewater treatment. Method: Pure bentonite/Titanium Dioxide nanocomposites and doped with 3, 5 and 10% w/w sil MoreBackground and Objective: One of the main applications of titanium dioxide nanoparticles is killing the microorganisms spatially in drinking water and wastewater treatment. Method: Pure bentonite/Titanium Dioxide nanocomposites and doped with 3, 5 and 10% w/w silver were prepared by molten salt method. In this study, the antibacterial activity of silver doped titanium dioxide/bentonite nanocomposites was studied against two important microorganisms in food industry i.e. Escherichia coli and Staphylococcus aureusunder visible or UV radiation. The photocatalytic activity of these composites against methyl orange was also investigated. The prepared nanocomposites were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), Energy-dispersive X-ray spectroscopy (EDX), UV-Vis diffusive reflectance spectrometer (UV-Vis DRS). Findings: The scanning electron microscope was showed, that agglomeration of spherical TiO2 nanoparticles formed on the bentonite surface. The XRD pattern revealed that all of the samples have only an anatase phase with crystalline size less than 50 nm. According to EDX analysis, the silver ions successfully doped to the TiO2 nanoparticles. According to UV-Vis DRS results, increasing amounts of doped Ag content in the silver-doped titanium dioxide results in a higher visible absorbance capability of the materials. Parent bentonite did not show antibacterial activity. Titanium dioxide/bentonite nanocomposites showed very weak antibacterial activity. The results showed that the antibacterial ability was significantly improved by doping silver content comparing with pure TiO2/bentonite nanocomposites. This study also showed that Gram-positive bacteria (S. aureus) were more readily disinfected by the photo catalysts than a Gram-negative bacterium (E. coli). According to photocatalytic activity findings, doping of nanocomposites with 5 % silver ions showed maximum photocatalytic activity. This is attributed to the increasing visible absorption capacity due to the presence of silver ions. Discussion and Conclusion: Antibacterial and photocatalytic activity of titanium dioxide/bentonite nanocomposites increases dramatically due to the addition of silver ions. This can be attributed to the release of silver ions from nanocomposites and the increase in the production of free radicals as a result of increased photocatalytic activity due to reducing the energy gap of titanium dioxide nanoparticles in nanocomposites. Manuscript profile -
Open Access Article
7 - Investigation of Changes in Physical Properties of Bitumen Composite by Adding Recycled Materials
seyed sharafoddin hosseini Simin RadBackground and Objective: Bitumen is one of the most widely used materials in industries, especially the road and construction industry. In this research, an attempt has been made to investigate and compared the effects of changes in the physical properties of bitumen c MoreBackground and Objective: Bitumen is one of the most widely used materials in industries, especially the road and construction industry. In this research, an attempt has been made to investigate and compared the effects of changes in the physical properties of bitumen composites containing recycled materials such as Hair, Fleece, Glass powder, stuffed chicken and Sawdust with pure bitumen to improve pure bitumen features. Using recycled materials either to save the environment as well as reduce the cost of final material. Material and Methodology This experimental research is used standard and validated methods to investigate thermal conductivity, sound transmission, viscosity, angularity, permeability, and compressive strength. Findings: Results has shown that the use of sawdust enhances thermal and strength resistance and also use of human hair enhances sound resistance of this pure material. In general, these additives had an adverse effect on viscosity of the raw material. But no significant effect was observed in the compressive strength of the raw material. Discussion and Conclusion: according to this investigation, adding recycled materials can improved some of properties of pure bitumen and as for type of bitumen usage in special industry, it can applied amplifier recycled additive in bitumen. Manuscript profile -
Open Access Article
8 - Optimum Dioxide Titanium Nanoparticles in Dioxide Titanium /Bentonite Composite for Sono Photo Catalytic De-Colorization of Methyl Orange dye
Mehran yousefi mohammad ghorbanpourBackground and Objectives: Dye is considered as one of the most important environmental pollutants in industrial wastewater due to its harmful effects on both human and environment. This study was aimed to determine Optimum Dioxide Titanium Nanoparticles in Dioxide Tita MoreBackground and Objectives: Dye is considered as one of the most important environmental pollutants in industrial wastewater due to its harmful effects on both human and environment. This study was aimed to determine Optimum Dioxide Titanium Nanoparticles in Dioxide Titanium /Bentonite Composite for sono photo catalytic de-colorization of Methyl Orange dye. Methods: In this study, bentonite was used as the substrate to stabilize titanium dioxide photo catalyst and the optimum amount of stabilized titanium dioxide nanoparticles in titanium dioxide/ bentonite composite was evaluated for sono photo catalytic removal of methyl orange dye. Accordingly, the optimal conditions for the photo catalytic process performance in dye removal included the effect of pH, methyl orange concentrations and nanocomposite doses. Findings: Structural properties of bentonite/titanium dioxide composites and pure titanium dioxide nanoparticles were investigated using scanning electron microscope (SEM), Diffuse Reflectance Spectroscopy (DRS) and Xray diffraction (XRD). Finally, the possibility of reuse of photo catalyst was investigated in three periods. Based on SEM results, reducing the amount of titanium dioxide reduced the number of nanoparticles formed on the bentonite surface. XRD and DRS analyses showed successful composite formation. The optimum amount of titanium dioxide nanoparticles in titanium dioxide/bentonite composite was obtained for sono photo catalytic dye removal of methyl orange with the titanium dioxide powder to bentonite ratio of 1: 2.5 in the primary mixture. Discussion and Conclusion: The study showed that increasing the amount of photo catalyst in the reaction medium increased the speed and efficiency of the dye removal but its excessive increase had a negative effect on the reaction. The best conditions for dye degradation were obtained using titanium dioxide/bentonite nanocomposite at pH 4. According to the results, the increase in concentration increased dye removal time. Finally, the sono photo catalytic composite efficiency was acceptable after three times of reuse. Manuscript profile -
Open Access Article
9 - Electrical Conductivity Property Study of Polyaniline–Cobalt Nanocomposite
Maryam Aghazadeh Fatemeh Aghazadeh -
Open Access Article
10 - Synthesis, characterization and Microwave Absorption Properties of Novel Hard-soft Ferrite and Polyaniline-loaded Nanocomposite
Tolou Pourashraf Mohammad Yousefi Saeid Shokri َAbbas Ahmadi Parviz Aberoomand Azar -
Open Access Article
11 - A Survey on Adsorption of Heavy Metals Including Pb(II) and Co(II)on the Montmorillonite/Copper Oxide Nanocomposites and Montmorillonite Clays
Maryam Ahmadi Sajjad Sedaghat Lida Khalaf -
Open Access Article
12 - An Investigation on Dynamical and Mechanical Properties of Hybrid Composite of Epoxy Matrix Reinforced with Sglass Fiber and Aluminum Sheet
k Kolahgar Azari A Alizadeh H Omidvar A Sayadi Kelemi -
Open Access Article
13 - Application of Fully Green Bio-Composites in Manufacturing of Wind Turbine Blades: A Strategic Review
N Desai P Bhatt M Solanki -
Open Access Article
14 - Fabrication of AA1060/Al2O3 Composites by Warm Accumulative Roll Bonding Process and Investigation of its Mechanical Properties and Microstructural Evolution
M. Heydari Vini P. Farhadipour -
Open Access Article
15 - Optimizing Mechanical Properties of POM/Graphene Nanocomposites Prepared by Spray Method
H. Asadollahi-Yazdi M. Shariati A. Imam M. Ghatee -
Open Access Article
16 - Mechanical Properties and Microstructural Evolution of AA5083/Al2O3 Composites Fabricated by Warm Accumulative Roll Bonding
Mohammad Heydari Vini M. Sedighi Mehdi Mondali -
Open Access Article
17 - Effect of Important Physical and Geometrical Parameters on the Dynamic Response of Thick Composite Plates with Smart Attached Mass
Ali Pourmoayed keramat Malekzadeh Fard naser zolghadr -
Open Access Article
18 - Micro-Finite Element Model to Investigate the Mechanical Stimuli in Scaffolds Fabricated via Space Holder Technique for Cancellous Bone
Sayed Alireza Hashemi Saeid Esmaeili Mazyar Ghadirinejad Saeed Saber-Samandari Erfan Sheikhbahaei Alireza Kordjamshidi Amirsalar Khandan -
Open Access Article
19 - Investigation on Failure Loads and Failure Modes for Two Parallel Pin-Loaded Holes Made from Unidirectional Glass-Epoxy Nanoclay Laminates
sajjad dehghanpour keivan hosseini safari Farzan Barati Mohammadmahdi Attar -
Open Access Article
20 - Effect of Inter-Cavity Spacing and Heat Treatment in Friction Stir Processing/Welding (FSP/FSW) Al7075 Composites Containing Al2O3 and Graphene Nanomaterials using Charpy Impact Test
Ali Hosseinzadeh Mahmoud Shariati Danial Ghahremani-moghadam Mohammad Reza Maraki -
Open Access Article
21 - Vibrations of Multi-Layer Beam with Nanocomposite Face Sheets Reinforced with Graphene Platelets and Porous Core
A Mihankhah Z Khoddami Maraghi A Ghorbanpour Arani Sh Niknejad -
Open Access Article
22 - ANSYS Modeling for Bone Reconstruction by Using Hybrid Nano Bio Composite
J Sattar Kashan S Mahmood Ali -
Open Access Article
23 - Thermal Vibration of Composites and Sandwich Laminates Using Refined Higher Order Zigzag Theory
A Chakrabarti S.K Singh A.H Sheikh -
Open Access Article
24 - Surface Degradation of Polymer Matrix Composites Under Different Low Thermal Cycling Conditions
A.R Ghasemi M Moradi -
Open Access Article
25 - Hygrothermal Analysis of Laminated Composite Plates by Using Efficient Higher Order Shear Deformation Theory
S.K Singh A Chakrabarti -
Open Access Article
26 - Wave Propagation Analysis of CNT Reinforced Composite Micro-Tube Conveying Viscose Fluid in Visco-Pasternak Foundation Under 2D Multi-Physical Fields
A. H Ghorbanpour Arani M.M Aghdam M.J Saeedian -
Open Access Article
27 - Analysis of Laminated Soft Core Sandwich Plate Having Interfacial Imperfections by an Efficient C0 FE Model
R.P Khandelwal A Chakrabarti P Bhargava -
Open Access Article
28 - Two-dimensional Axisymmetric Electromechanical Response of Piezoelectric, Functionally Graded and Layered Composite Cylinders
T Kant P Desai -
Open Access Article
29 - An Experimental Investigation on Fracture Analysis of Polymer Matrix Composite under Different Thermal Cycling Conditions
A.R Ghasemi M Moradi -
Open Access Article
30 - Finite Element Modeling of the Vibrational Behavior of Single-Walled Silicon Carbide Nanotube/Polymer Nanocomposites
S Rouhi R Ansari A Nikkar -
Open Access Article
31 - Optimizing Surface Roughness of Nylon6/CaCO3 Nano-Composites Using Harmony Search Algorithm
Shahab Mohammadi Reza Farshbaf Zinati MohammadReza Razfar -
Open Access Article
32 - A review on environmental applications of polymer hydrogels and their composites
Mehrab Fallahi-Samberan Samaneh KhodadadiHydrogels are hydrophilic polymeric network of three dimensional cross linked structures that absorb substantial amount of water. Cross linking facilitates insolubility in water because of physical or chemical bonding. It also provides required mechanical strength and p MoreHydrogels are hydrophilic polymeric network of three dimensional cross linked structures that absorb substantial amount of water. Cross linking facilitates insolubility in water because of physical or chemical bonding. It also provides required mechanical strength and physical integrity to the hydrogels. There is an emerging demand and expanding interest in synthesis of hydrogel materials such as hydrogel based membranes and hydrogel composites. They can be applied in industrial separations, agriculture, biomedical purposes and reduction in environmental toxicity because of their good sorption abilities, resistance and low cost. Environmental degradation has a great impact on human health. Preventive measures taken to protect our environment will largely help in reducing illness and adverse health conditions. Research and advanced studies to understand various environmental issues, which have been plaguing us from a long time now, are looked up to with intense interests. The understanding of the causes and possible solutions for environmental problems calls for good sensors, to identify various causalities. Hence, a significant section on hydrogels used in sensing for environmental applications is presented here. With mounting issues of water scarcity and water pollution, recent applications of hydrogels for water remediation is also an important environmental application that we have addressed. Manuscript profile -
Open Access Article
33 - A review on the Smart Polymer Nanocomposites and their Applications
Aida AdinehAsl Farzaneh Ghaffari Mehrab Fallahi-SamberanPolymeric materials that hold the capacity to reply toward exterior stimuli are denoted as stimuli responsive polymers or smart polymers. Smart polymers experience a great reversible change, either chemical or physical, in their properties as a significance of minor eco MorePolymeric materials that hold the capacity to reply toward exterior stimuli are denoted as stimuli responsive polymers or smart polymers. Smart polymers experience a great reversible change, either chemical or physical, in their properties as a significance of minor ecological differences. They can reply to a single, dual, or multiple stimulus such as the electric field, temperature, magnetic field, pH, light intensity, living molecules, etc. In this paper, the main objective is to elaborate the importance of smart polymers and their composite materials at the nano scale. Smart polymer classification along with the most familiar synthesis methods and some most common applications are briefly summarized in this paper. Some common applications of smart polymers are discussed here such as sensor/ biosensor, wastewater treatment, data storage devices, cancer therapy and surgery devices, drug delivery system, etc. The multidisciplinary exploration concerning very diverse disciplines will be essential to offer advances in smart polymer nanocomposite and their several types of application. Polymer chemists, organic/inorganic chemists, material scientists, ecologists, pharmacologists, and therapeutic specialists will have to work together toward realizing innovative materials to meet the requirements of the emerging modern civilization. Manuscript profile -
Open Access Article
34 - Effect of Silicon Carbide and graphite additives on the pressureless Sintering mechanism and microstructural characteristics of Ultra-High Temperature ZrB2 Ceramics Composites
Mahdi Khoeini Mohammad Zakeri Ali Nemati Morteza Tamizifar Hamed Samadi -
Open Access Article
35 - Sol-gel synthesis and characterization of alumina-15%mullite composite nanopowder
Ali Sedaghat E. Taheri-Nassaj G. Soraru R. Ceccatob T. Ebadzadeh -
Open Access Article
36 - The Effect of the Mg Content on Mechanosynthesis of ZrB2–SiC–ZrC Composite in the Mg/ZrSiO4/B2O3/C System
Omid Torabi Sanaz Naghibi Mohammad Hossein Golabgir Hamid Tajizadegan Amin Jamshidi -
Open Access Article
37 - Mechanical Characterization of Hemp Cotton Hybrid Composites: Effect of Surface Treatment
Hiral Parikh Shrey Patel -
Open Access Article
38 - Facile synthesis of Ni/NiO nanocomposites via thermal decomposition
Aliakbar Dehno Khalaji Gholamhossein Grivani Shaghayegh Izadi Mehdi Ebadi -
Open Access Article
39 - Incorporation of Zinc Oxide Nanoparticles in RHA-MTW Zeolite and its Application for Degradation of Dye
afshin pourahmad Babak Sadeghi Babak Azari Masoud Mokhtary -
Open Access Article
40 - A polycaprolactone bio-nanocomposite bone substitute fabricated for femoral fracture approaches: Molecular dynamic and micro-mechanical Investigation
Ashkan Farazin Hossein Akbari Aghdam Mehdi Motififard Farshid Aghdavoudi Alireza Kordjamshidi Saeed Saber-Samandari Saeid Esmaeili Amirsalar KhandanThe application of porous bio-nanocomposites polymer has greatly increased in the treatment of bone abnormalities and bone fracture. Therefore, predicting the mechanical properties of these bio-nanocomposites is very important prior to their fabrication. Investigation o MoreThe application of porous bio-nanocomposites polymer has greatly increased in the treatment of bone abnormalities and bone fracture. Therefore, predicting the mechanical properties of these bio-nanocomposites is very important prior to their fabrication. Investigation of mechanical properties like (elastic modulus and hardness) is very costly and time-consuming in experimental tests. Therefore, researchers have focused on mathematical methods and new theories to predict the artificial synthetic bone for orthopedic application. In this paper, porous bio-nanocomposites synthetic bone including nanocrystalline Hydroxyapatite (HA) nanoparticles and Titanium oxide (TiO2) containing (0 wt%, 5 wt%, 10 wt%, and 15 wt% of TiO2) as reinforcements and the biocompatible polycaprolactone (PCL) polymer as the matrix has been used for the fabrication of PCL-HA-TiO2. Then, the mechanical test was conducted on the samples and the extracted value from the experimental test was compared with the analytical model using molecular dynamics (MD) method. Finally, these properties were compared with the Dewey micromechanics theory, and the error rate between the experimental method and the Dewey theory was reported. It was found that as the porosity percentage increased in the sample three-phase in composites, the model has a higher error in this theory. Then, due to the importance of hydroxyapatite in the fabrication of bone scaffolds, the obtained results of mechanical properties (Elastic modulus and Poisson’s ratio) have been analyzed statistically. The application of these equations in the rapid prediction of Elastic Modulus and Poisson's ratio of the synthetic bone scaffolds made of hydroxyapatite is highly recommended. Manuscript profile -
Open Access Article
41 - Effect of nanoparticles on the improving mechanical behavior of GFRP composites in a corrosive environment
Yasaman Gitiara Reza Barbaz-Isfahani Saeed Saber-Samandari Mojtaba Sadighi -
Open Access Article
42 - Sol-Gel Fabrication and Photocatalytic Properties of Indium Oxide-CNT Composite
Giang Li Lnfeng Hu -
Open Access Article
43 - Facile synthesis of Ni/NiO nanocomposites via thermal decomposition
Aliakbar Dehno Khalaji Gholamhossein Grivani Shaghayegh Izadi Mehdi Ebadi -
Open Access Article
44 - A polycaprolactone bio-nanocomposite bone substitute fabricated for femoral fracture approaches: Molecular dynamic and micromechanical Investigation
Ashkan Farazin Hossein Akbari Aghdam Mehdi Motififard Farshid Aghadavoudi Alireza Kordjamshidi Saeed Saber-Samandari Saeid Esmaeili Amirsalar Khandan -
Open Access Article
45 - Incorporation of Zinc Oxide Nanoparticles in RHA-MTW Zeolite and its Application for Degradation of Dye
Babak Azari Afshin Pourahmad Babak Sadeghi Masoud Mokhtary -
Open Access Article
46 - Evaluation of SMC Synchronous Motor Using Soft Magnetic Compounds and Direct Fuzzy Torque Control
Hossein Refahi -
Open Access Article
47 - An Investigation on the Application of CNT-Aluminum Nanocomposite in Mechanical Alloying
Pavel Kirshkov Jasmin Liakov Raha Vasegh -
Open Access Article
48 - A Numerical Investigation the Effects of the Voltage on the Displacement and Stress of Copper-based Ionic Polymer-Metal Composites
Hamid Soleimanimehr Amin Nasrollah -
Open Access Article
49 - Machining Operation Parameters in Drilling Process; Variation of Thrust Forces in Epoxy Based Nanocomposites
Hamzeh Shahrajabian Masoud Farahnakian Mehdi Moghri -
Open Access Article
50 - Enhancement of photocatalytic degradation of 4-nitrophenol by integrating Ag nanoparticles with ZnO/HZSM-5 nanocomposite
Baharak Divband Azadeh Jodaei Masumeh Khatamian -
Open Access Article
51 - Catalytic activity of immobilized Ag and Pd nanoparticles on the magnetic natural zeolite using Chrysanthemum morifolium flower extract in the reduction/decolorization of dyes
Akbar Rostami-Vartooni Leila Rostami Mojtaba Bagherzadeh -
Open Access Article
52 - Removal of Mercury (II) in Aqueous Solution by Using ZnO and ZnO/CdS Nanoparticles as Photocatalysts
Fattima Al-Zahra Gabar Gassim Ali J. J. Makkaw Noor Hadi Aysa -
Open Access Article
53 - Optimization of Photo Catalytic Activity of ZnO Nano Composites by Surface Modification with Cu metal using Facile Hydrothermal Approach
Fazal Ur Rehman Manzar Zahra Iqra Qayyum Aoun Raza Amir Waseem -
Open Access Article
54 - Synthesis of a thin film of CuO/MgO/PVC nanocomposites for Photocatalytic applications
Rouabeh Nouhad Roshan Nazir Yassine Djaballah AbQayoom Mir Imene Ameur Ouidad Beldjebli -
Open Access Article
55 - Synthesis, characterization, and evaluation of antibacterial activities of novel nanocomposite films chitosan/phosphorus triamide/Fe3O4 NPs
samad yarahmadi niloufar dorosti maryam pas abdul naser mohammadiIn this work, new nano-composite of chitosan/phosphorus triamide with Fe3O4 NPs (1, 2.5, 5%) was prepared. The Fe3O4 NPs were synthesized at size of about 18-24 nm with a spherical morphology through co-precipitation method by using FeCl3.9H2O and FeCl2.4H2O salts. The MoreIn this work, new nano-composite of chitosan/phosphorus triamide with Fe3O4 NPs (1, 2.5, 5%) was prepared. The Fe3O4 NPs were synthesized at size of about 18-24 nm with a spherical morphology through co-precipitation method by using FeCl3.9H2O and FeCl2.4H2O salts. The phosphorus triamide derivative was synthesized from the reaction of tert-butylamine with phosphoryl chloride. X-ray diffraction (XRD) patterns and scanning electron microscope (SEM) images of chitosan, phosphorus triamide, Fe3O4 NPs, chitosan/phosphorus triamide, and chitosan/phosphorus triamide/1-5% Fe3O4 NPs were investigated and the results confirmed the formation of the desired films. Further, morphology and the size of nanoparticles were investigated by changing ultrasonic frequency (37 and 80 Hz) and power (30, 60, and 100 W). The in vitro antibacterial activities were evaluated against two gram-positive Staphylococcus aureus (S. aureus), Bacillus cereus (B. cereus) and one gram-negative Pseudomonas aeruginosa (P. aeruginosa) bacteria. Nanocomposite containing higher percent of Fe3O4 NPs showed more antibacterial activities. Results also displayed greater antibacterial effects against B. cereus bacterium. Manuscript profile -
Open Access Article
56 - Synthesis, characterization and study of Pt/A type-HMS micro/mesoporous catalysts in the normal heptane reforming process
Nastaran ParsafardIn present work, the gas phase reforming of normal heptane was used to study the catalytic activity of micro/mesoporous composites. The influence of the structures of these catalysts on the normal heptane conversion and the selectivity to various products including mult MoreIn present work, the gas phase reforming of normal heptane was used to study the catalytic activity of micro/mesoporous composites. The influence of the structures of these catalysts on the normal heptane conversion and the selectivity to various products including multi and mono branched isomers and cracking products was studied. Various characterization techniques, i.e., X-ray diffraction (XRD), X-ray florescence (XRF), Fourier transform infrared (FTIR), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), thermogravimetry and differential thermal analyzer (TGA/DTA), and nitrogen adsorption-desorption measurements were used for characterization of the catalysts. The catalytic activity and stability in normal heptane reforming for platinated composite materials consisting of HMS mesopore section (hexagonal mesoporous silica) and microspore section of series A zeolites including 3A, 4A, and 5A, were very close to each other. However, the results show that the selectivity toward the formation of isomers is remarkably high for Pt/4A-HMS composite catalyst. The results show that the effective parameter on catalytic performance is the aluminum amount (or Si/Al ratio) in the structure of the prepared catalysts. Manuscript profile -
Open Access Article
57 - Thermodegradation kinetics of poly(methyl methacrylate)/silver nanocomposites synthesized via in- situ photoiniferter-mediated photopolymerization
پویان مکوندی ناصر نیکفرجام رضوان جمال الدین طاهر نادری قزوینیHere, we report thermodegradation of poly)methyl methacrylate(/silver nanoparticle )PMMA/AgNP( nanocomposite networks synthesized by in-situ photoiniferter-mediated photopolymerization. The nanocomposite networks were prepared in the presence of 0.5 wt.%of AgNP and vari MoreHere, we report thermodegradation of poly)methyl methacrylate(/silver nanoparticle )PMMA/AgNP( nanocomposite networks synthesized by in-situ photoiniferter-mediated photopolymerization. The nanocomposite networks were prepared in the presence of 0.5 wt.%of AgNP and various amounts of allyl methacrylate )0, 1, 5, 10 wt.%( as crosslinking agent. The kinetic studies of thermodegradation of the nanocomposite networks by two isoconversional methods, Flynn-Wall-Ozawa and Kissinger–Akahira–Sunose, showed that AgNP had a dual effect on thermal degradation of PMMA networks; at early stages, AgNP promoted the degradation of the nanocomposites while in the subsequent stages maintained the polymer stability against thermal degradation. Manuscript profile -
Open Access Article
58 - خصوصیات ریزساختار و خصوصیات مکانیکی کامپوزیت های Al-SiCp
G. Hemath Kumar M. Sreenivasan S. Muthu Kumar N. Dilip Raja -
Open Access Article
59 - کاربرد روش پالس برای اندازه گیری برش افزایشی تنش های باقیمانده در کامپوزیت های چند لایه
محمود مهرداد شکریه سعید اکبری -
Open Access Article
60 - محاسبه غلظت تنش در اطراف یک سوراخ در یک لایه ترکیبی ترکیبی با استفاده از روش المان محدود
پژمان تقی پور پدرام لورزاده -
Open Access Article
61 - رفتار خزش کامپوزیت های اپوکسی تقویت شده بازالت و الیاف شیشه
رضا اسلامی فارسانی سید محمدرضا خلیلی وحید دقیقی رضا فاضلی -
Open Access Article
62 - مقایسه خصوصیات فشاری بین روش Va-cuum Infusion و روش Hand Lay-Up برای ساندویچ پانل کامپوزیتی با هسته Bal-sa
م. نجفی ر. اسلامی فارسانی سید محمدرضا خلیلی -
Open Access Article
63 - Synthesis and characterization of poly (AAm-co-AAc)/NaA nanocomposite and removal of methylene blue with it
Mojgan Zendehdel Abolfazl Barati Haniyeh Alikhani -
Open Access Article
64 - Characterization of Cu-Yttria Stabilized Zirconia composite produced by Spark Plasma Sintering
جعفر میرعظیمی پروین عباچی کاظم پورآذرنگ وحید باباییIn applications like sliding electrical contacts good electrical/thermal conductivity as well as wear resistance is required besides suitable mechanical properties. Furthermore, in these types of applications it is necessary to be prevented from local welding of various MoreIn applications like sliding electrical contacts good electrical/thermal conductivity as well as wear resistance is required besides suitable mechanical properties. Furthermore, in these types of applications it is necessary to be prevented from local welding of various parts of pieces to each other. Although the addition of ceramic particles to a conductive metal like copper can lead to decrease of above mentioned physical properties, the producing of copper matrix composites can induce high tensile strength, better wear resistance, and resistance to electrical current with high amperage improvement. Hence, at the present study, the copper based composites containing 2, 3 and 5 vol. % ultra-fine grained yttria stabilized zirconia (YSZ) particles were produced by powder metallurgy and spark plasma sintering (SPS) method. The distribution of reinforcing particles at the microstructure was carefully studied using electron microscopy. Additionally, the density, hardness and thermal conductivity values of the specimens were measured. Referring to the results, microstructural analysis showed satisfactorily distribution of reinforcement particles in copper matrix and the clustering of particles is not so noticeable. The relative density up to 95% for all specimens was obtained due to the sintering procedure. As a result of the presence of hard stabilized zirconia particles, an increase of 60 percent in the Brinell hardness of the Cu-5 vol.% YSZ composite sample was observed in comparison with unreinforced copper. Moreover, the determined thermal conductivity values decreased from 397 to 241 W/m K with increasing of reinforcement content from 0 to 5 vol. %. The variation in the thermal conductivities can be related to the microstructural characteristics such as reinforcement and porosity volume percent as well as other microstructural defects. Manuscript profile -
Open Access Article
65 - Evaluation of the thermal properties of PLLA/HA and PLLA/45S5 composites for application in bioabsorbable interference screws
mohammad khorsand-ghayeni علیرضا صادقی اول شهر سمیرا نوخاسته امیر مهدی مولوی حسین امینی مشهدیReplacement of metals with bioabsorbable polymers has shown promising results for fabrication of biomedical implants. But polymers themselves have some restrictions such as inability in osteoconduction and integration with surrounding tissue, induce foreign body reactio MoreReplacement of metals with bioabsorbable polymers has shown promising results for fabrication of biomedical implants. But polymers themselves have some restrictions such as inability in osteoconduction and integration with surrounding tissue, induce foreign body reactions, reducing of pH by degradation products which can results in unwanted inflammatory reactions in related place, and weak mechanical properties in compare to metallic types. In order to alleviate these problems using of polymeric composites including bioactive particles is taken into consideration. In the present work 45S5 bioactive glass and hydroxyl apatite (HA) ceramic particles were used for fabrication of poly(L-Lactic acid) (PLLA) composite screws. Microstructure and thermal properties of produced samples were evaluated by differential thermal analysis (DTA), thermogravimetry (TG), scanning electron microscopy (SEM) and particle size analysis (PSA). Also for evaluation of osteogenic activity of produced samples, alkaline phosphatase (ALP) and Alizarin Red Staining assays were carried out and cytotoxicity was conducted through MTT assay. In compare to PLLA screws, PLLA/HA and PLLA/45S5 composites showed more and less thermal stability respectively. The results of cell analysis assays showed no cytotoxicity and both composites revealed proper osteogenesis potentials. Manuscript profile -
Open Access Article
66 - Investigation on microstructure, mechanical properties and pressureless sintering behavior of ZrB2-SiCnano/micron composites
زینب نصیری مهری مشهدیIn the present paper, ZrB2-SiC was developed by pressureless sintering method and SiC powder at nano and micro-sized scale was used as reinforcement phase. In order to produce composite samples, the primary powders were milled and blended in planetary ball mill apparatu MoreIn the present paper, ZrB2-SiC was developed by pressureless sintering method and SiC powder at nano and micro-sized scale was used as reinforcement phase. In order to produce composite samples, the primary powders were milled and blended in planetary ball mill apparatus with rotational speed of 200rpm and then processed using hot pressing (70ᵒC and 70MPa), cold isostatic press (200MPa), Pyrolysis (1000ᵒC) and sintering (2150ᵒC). The values of relative density and porosity of samples were measured to evaluate the effect of presence of micro-sized SiC and SiC nano particles simultaneously on the pressureless sintering behavior of ZrB2-SiC. In order to compare the microstructure and mechanical properties of samples Scanning Electron microscopy (SEM), equipped with EDS spectroscopy, XRD analysis, hardness and toughness tests were used. The results show that as the volume percentage of nano SiC decreases to 15 vol.%, the hardness, toughness, relative density and shrinkage initially increase and then decrease. Manuscript profile -
Open Access Article
67 - Investigation of Microstructural and Mechanical Properties of Tungsten Disulfide (WS2) /Aluminum Matrix Nanocmposite
hossein salehi vaziri ali shokuhfar Seyyed Salman Seyyed AfghahiIn this research, WS2 nanoparticles were synthesized using hydrothermal method and then added to aluminum matrix as reinforcement. Nanocomposites were fabricated by powder metallurgy processing followed by Spark Plasma Sintering (SPS) consolidation. Transmission electro MoreIn this research, WS2 nanoparticles were synthesized using hydrothermal method and then added to aluminum matrix as reinforcement. Nanocomposites were fabricated by powder metallurgy processing followed by Spark Plasma Sintering (SPS) consolidation. Transmission electron microscopy (TEM) and XRD of synthesized powder showed WS2 nanoparticles were synthesized successfully. Microstructural properties of nanocomposites were investigated using optical microscopy (OM), field emission scanning electron microscopy (FESEM) and energy dispersive spectroscopy (EDS). Nanoparticles were well distributed in the aluminum matrix and have a good dispersion. The presence of nanoparticles in the matrix reduces the size of the grain less than 20 µm so that the size of the grain becomes smaller by increasing the amount of nanoparticles .The density of the sample showed that the nanocomposite had a very good compressibility and relative density reach to near 99% in 4wt. %WS2. Hardness and compressive strength of nanocomposites were evaluated. Mechanical evaluations indicated that, the increase in weight fraction of WS2 nanoparticles, resulted in improvement of hardness and compressive strength of aluminum. Concentration of tungsten disulfide nanoparticles has a direct effect on increasing the mechanical properties of nanocomposite. The compressive strength increased up to 120 MPa, about twice the base metal, and the hardness raised up to 30%. Manuscript profile -
Open Access Article
68 - Electrical Discharge Machining of Aluminum Matrix Composite Reinforced With Titanium Oxide Nano-Particles
Ali akbar lotfi Saeed Daneshmand.Nano-particles used in metal matrix composites show a various range of mechanical, chemical and physical features, causing significant improvements in mechanical strength, hardness and thermal characteristics. They can also change the capability of machining. Electrica More.Nano-particles used in metal matrix composites show a various range of mechanical, chemical and physical features, causing significant improvements in mechanical strength, hardness and thermal characteristics. They can also change the capability of machining. Electrical discharge machining is considered as an integrate part of hard metal machining. In this paper, the parameters of electrical discharge machining for aluminum composite material improved by Nano-particles of titanium dioxide have been studied. The purpose of this study was to evaluate the impacts of electrical current and voltage and pulse on and off-time on the material removal rate, tool wear rate and surface roughness. Kerosene as a dielectric and copper electrode were used to carry out the experiment. In addition, Analysis of variance was utilized to authenticate the experimental results. The result shows that Nano-particles titanium dioxide has trivial effects on machining parameters due to being insulators. They also do not melt in the process of electrical discharge machining. Moreover, the electrical current and the pulse on time have the most influence on the material removal rate, tool wear rate and surface roughness. By increasing the electrical current and pulse on time, tool wear rate and surface roughness have grown, while by increasing the pulse off time tool wear rate has decreased. The average wear rate of the electrode in the aluminum alloy 2024 reinforced with 5% titanium oxide nanoparticles is 46.3%, equivalent to 0.346 gr, more than the weight loss of the aluminum 2024 specimen. Manuscript profile -
Open Access Article
69 - Effect of nanograghite addition on the densification of ZrB2-SiC composites fabricated by spark plasma sintering
Soroush Parvizi Zohre Ahmadi Mehdi Shahedi Asl Mehran Jaberi ZamharirAbstract Ultrahigh temperature ZrB2-SiC composites reinforced with different amount of nano-graphite (0, 2.5, 5, 7.5 and 10 wt%) were fabricated by spark plasma sintering process. The effect of graphite nano-flake on the densification behavior of the mentioned composite MoreAbstract Ultrahigh temperature ZrB2-SiC composites reinforced with different amount of nano-graphite (0, 2.5, 5, 7.5 and 10 wt%) were fabricated by spark plasma sintering process. The effect of graphite nano-flake on the densification behavior of the mentioned composites were investigated. Spark plasma sintering was carried out at a temperature of 1900 °C for a dwell time of 7 min under an applied pressure of 40 MPa. A fully dense ZrB2-SiC composite (with relative density of 100.6%) was obtained by the addition of 5 wt% nano-graphite. Elimination of oxide impurities through the chemical reactions with graphite as well as formation of sub-micron phases caused to an enhancement in the densification. In addition, the in-situ formed ZrC phase was one of the reasons behind the increasing of relative density. Keywords: spark plasma sintering, ultrahigh temperature composites, densification behavior, nano-graphite, ZrB2-SiC composites Keywords: spark plasma sintering, ultrahigh temperature composites, densification behavior, nano-graphite, ZrB2-SiC composites Manuscript profile -
Open Access Article
70 - TLP Bonding of Al-Al3V Nano Composite and Evaluation of its Properties
Seyedeh Zahra Anvari Mahdi Rajabi Safora OshaghiIn this research, the bonding of aluminum matrix nanocomposites reinforced by Al3V particles was investigated using a transient liquid phase of bonding process and evaluating its properties. The effect of temperature and time of bonding on the properties was also invest MoreIn this research, the bonding of aluminum matrix nanocomposites reinforced by Al3V particles was investigated using a transient liquid phase of bonding process and evaluating its properties. The effect of temperature and time of bonding on the properties was also investigated. For this purpose, Al-Al3V nanocomposite components were first prepared for bonding. The copper metal was used as the intermediate layer and bonding of these components was investigated by the transient liquid phase method at 560, 580 and 600°C, and 20, 40 and 60 min. Scanning electron microscopy was used to evaluate the microstructure of the joint. The shear strength of the joints was also evaluated by a pressure test device. The results indicated better bonding at 580 and 600°C than other samples. With increasing bonding temperature, the melt volume increased at the bonding joint and thus a wider surface area is filled by melt. According to the microhardness results, the maximum hardness of the joint is at 600 ° C for 20 min due to the diffusion of copper and formation of Al2Cu precipitated particles around the joint seam. The maximum joint shear strength of 65 MPa was achieved at 600 ° C for 40 min. Manuscript profile -
Open Access Article
71 - ساخت نانوکامپوزیت پایه تیتانیوم متراکم شده به روش استاتیکی در فشار های های تراکم گوناگون و بررسی خواص مکانیکی آن
سید مهران زحلی فرزاد فریباامروزه ساخت نانوکامپوزیتها، برای دستیابی به موادی با خواص ترکیبی و بهبود خاصیت مواد، بسیار مورد توجه محققان قرار گرفته است. یکی از بهترین روشهای ساخت نانوکامپوزیتها استفاده از روش متالورژی پودر است. زیرا با این روش علاوه بر اینکه ضایعات به حداقل میرسند میتوان مواد Moreامروزه ساخت نانوکامپوزیتها، برای دستیابی به موادی با خواص ترکیبی و بهبود خاصیت مواد، بسیار مورد توجه محققان قرار گرفته است. یکی از بهترین روشهای ساخت نانوکامپوزیتها استفاده از روش متالورژی پودر است. زیرا با این روش علاوه بر اینکه ضایعات به حداقل میرسند میتوان موادی را که دارای نقطهی ذوب بالا هستند با مواد دارای نقطهی ذوب پایین ترکیب نمود که این کار با روش ریختهگری بسیار دشوار خواهد بود. در این تحقیق آلیاژ تیتانیوم برای بهبود خواص مکانیکی با تقویتکنندهی کاربید سیلیسیم ترکیب شده است. از آنجا که پودر تقویتکنندهی کاربید سیلیسیم در مقیاس نانو می باشد، این دو ماده با هم تشکیل یک نانو کامپوزیت میدهند. روش متالورژی پودر بهترین راه برای ترکیب این دو ماده با هم می باشد. در این تحقیق برای تولید این نانو کامپوزیت، از روش فشردن استاتیکی(دستگاه پرس سرد) استفاده شده است. برای مقایسه، سه درصد مختلف تقویت کنندهی نانوپودر کاربید سیلیسیم و همچنین، سه فشار پرس مورد استفاده قرار گرفته است. همچنین، آزمایشهای چگالی، مشاهده مرزبندی دانهها توسط میکروسکوپ الکترونی رویشی، تست فشار و آزمایش سختی روی آنها انجام گرفت. Manuscript profile -
Open Access Article
72 - Using finite element model in calculation of stress concentration factor around an elliptical hole in composite hybrid lamina
Pedram Lorzadeh -
Open Access Article
73 - تحلیل ارتعاشات آزاد تیر تیموشنکو تقویتشده با نانولولههای نیتریدبور بر روی بستر ارتجاعی
ایلدا عبداللهی محمدحسین یاسدر این مقاله به بررسی ارتعاشات آزاد تیر نانوکامپوزیتی پایه پلیمری تقویت شده با نانولولههای نیترید بور بر روی بستر الاستیک پرداخته شده است. نانولولهها صاف، بدون نقص و با جهت گیری یکنواخت و مستقیم در ماتریس در نظر گرفته شده است. نحوهی توزیع نانولوله­ها در راس Moreدر این مقاله به بررسی ارتعاشات آزاد تیر نانوکامپوزیتی پایه پلیمری تقویت شده با نانولولههای نیترید بور بر روی بستر الاستیک پرداخته شده است. نانولولهها صاف، بدون نقص و با جهت گیری یکنواخت و مستقیم در ماتریس در نظر گرفته شده است. نحوهی توزیع نانولوله­ها در راستای ضخامت تیر به صورت یک توزیع یکنواخت و سه توزیع هدفمند متفاوت در نظر گرفته شده است. خواص تیر نانوکامپوزیتی با استفاده از یک مدل میکرومکانیکی بدست آمده و معادلات حاکم بر اساس تئوری تیر تیموشنکو و با استفاده از اصل همیلتون استخراج شده است. معادلات حاکم با استفاده از روش دیفرانسیل کوادریچر تعمیم یافته حل شده و فرکانسهای طبیعی تیر بدست آمده است. در ادامه تاثیر پارامترهای مختلف از قبیل کسر حجمی نانولوله، نحوهی توزیع نانولوله در راستای ضخامت تیر، نوع بستر الاستیک، شرایط مرزی مختلف و نسبت لاغری تیر بر روی فرکانس طبیعی بررسی شده است. نتایج بدست آمده نشان میدهد که تغییر هر کدام از این پارامترها تاثیر بسزایی بر روی فرکانس طبیعی دارد. Manuscript profile -
Open Access Article
74 - بررسی پارامترهای مؤثر در تعیین تنش های پسماند در صفحات فلزی و چندلایههای کامپوزیتی با روش شیارزنی
محمود مهرداد شکریه سعید اکبری رکنآبادیروش شیارزنی یکی از روش­های پرکاربرد در اندازه­گیری تنش­های پسماند است که طی آن شیاری در چند مرحله در قطعه مورد نظر ایجاد شده و کرنش­های آزاد شده در هر مرحله به وسیله کرنش­سنج ثبت می­شود. ارتباط بین کرنش­های ثبت شده و تنش­های پسماند Moreروش شیارزنی یکی از روش­های پرکاربرد در اندازه­گیری تنش­های پسماند است که طی آن شیاری در چند مرحله در قطعه مورد نظر ایجاد شده و کرنش­های آزاد شده در هر مرحله به وسیله کرنش­سنج ثبت می­شود. ارتباط بین کرنش­های ثبت شده و تنش­های پسماند به وسیله ماتریس ضرایب نرمی صورت می­گیرد. در این تحقیق به کمک روش اجزای محدود، پارامترهای مؤثر در محاسبه مقادیر ضرایب نرمی برای صفحات فلزی ایزوتروپیک و همچنین چند لایه­های کامپوزیتی بررسی شده است. در ابتدا فرایند شبیهسازی برای صفحات ایزوتروپیک بهصورت دو و سه بعدی انجام گرفته است. نتایج بهدست آمده بیانگر تطابق کامل نتایج دو مدل است. برای محاسبه ضرایب نرمی نیاز به محاسبه کرنش متوسط در محل کرنش­سنج است. برای این کار از روش­های مبتنی بر کرنش و مبتنی بر جابهجایی استفاده شده است. همچنین با مقایسه ترک و شیار، تأثیر عرض شیار بر ضرایب نرمی بررسی شده است. سپس میزان کرنش ثبت شده توسط کرنشسنجهای با طول اندازهگیرهای مختلف مقایسه و مشخص شد با استفاده از کرنشسنج­های با طول اندازهگیر کمتر، میزان کرنش ثبت شده افزایش یافته و در نتیجه خطای اندازه­گیری کاهش مییابد. در نهایت با استفاده از مدل سه­بعدی ارائه شده ضرایب نرمی برای دو چندلایه­ای کامپوزیتی کربن- اپوکسی و شیشه- اپوکسی تعیین شده­اند. Manuscript profile -
Open Access Article
75 - Effectiveness of Magnetic Bentonite Nanocomposites as Mycotoxin Binders in Dairy Baluchi Ewe's Diets: Impact on Milk Yield, Composition, Blood Chemistry, and Aflatoxin M1 Levels
E. Ibrahimi Khoram Abadi S. HeydariBentonite is considered the most effective adsorbent for aflatoxin (AF) decontamination, and recent studies have shown that changing its structure in nano form improves its physicochemical properties and chemical stability. This study was aimed to evaluate the effective MoreBentonite is considered the most effective adsorbent for aflatoxin (AF) decontamination, and recent studies have shown that changing its structure in nano form improves its physicochemical properties and chemical stability. This study was aimed to evaluate the effectiveness of different types of bentonites as binders on performance, plasma metabolites, and aflatoxin M1 (AFM1) levels in contaminated milk of Baluchi ewes. The study was conducted with 12 ewes randomly assigned to four different experimental diets. The experi-mental diets were: (1) control (the basal diet had no supplements and contained bakery waste naturally con-taminated with AF); (2) control diet supplemented with natural bentonite (NB) (5 g/kg DM); (3) control diet supplemented with modified bentonite (MB) (5 g/kg DM) and (4) control diet supplemented with magnetic bentonite nanocomposite (MBNC) (5 g/kg DM). The study found that adding bentonite clays to the diet of ewes resulted in increased milk yield (P0.05). The study also found that increasing aflatoxin B1 (AFB1) intake resulted in a decreased carryover of AFB1 into AFM1 (P<0.01), with MBNC having the lowest carryover compared to other treatments (P<0.01). These results suggest that modification of bentonite structure in nanocomposite form improves chemical stability, physicochemical properties, and efficiency as novel toxin binders for crops and animal products. Manuscript profile -
Open Access Article
76 - Synthesis of polymer matrix nanocomposite with carbon fibers and analysis of its strength properties
S.M.M. ShafieiIn polymer-based nanocomposites, carbon nanofibers have been used to improve mechanical properties in various applications. In this research, the tensile properties of carbon nanofibers have been used to create carbon-epoxy nanocomposite and improve the mechanical prope MoreIn polymer-based nanocomposites, carbon nanofibers have been used to improve mechanical properties in various applications. In this research, the tensile properties of carbon nanofibers have been used to create carbon-epoxy nanocomposite and improve the mechanical properties of epoxy nanocomposite, and the effect of the weight percentage of carbon nanofibers on the mechanical properties of epoxy nanocomposite has been investigated. Epoxy with weight percentages of 1.0, 5.0 and 1.5 carbon nanofibers were produced and their mechanical properties were investigated. The results showed that the use of even a small percentage of carbon nanofibers can lead to the improvement of mechanical properties. Manuscript profile