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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 - Study on the Optical and Rheological properties of polymer- layered Silicate Nanocomposites
Milad Edraki Mohammad Banimahd Keivani -
Open Access Article
3 - 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
4 - 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
5 - Electrical Conductivity Property Study of Polyaniline–Cobalt Nanocomposite
Maryam Aghazadeh Fatemeh Aghazadeh -
Open Access Article
6 - 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
7 - 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
8 - Optimizing Mechanical Properties of POM/Graphene Nanocomposites Prepared by Spray Method
H. Asadollahi-Yazdi M. Shariati A. Imam M. Ghatee -
Open Access Article
9 - 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
10 - Finite Element Modeling of the Vibrational Behavior of Single-Walled Silicon Carbide Nanotube/Polymer Nanocomposites
S Rouhi R Ansari A Nikkar -
Open Access Article
11 - 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
12 - 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
13 - Facile synthesis of Ni/NiO nanocomposites via thermal decomposition
Aliakbar Dehno Khalaji Gholamhossein Grivani Shaghayegh Izadi Mehdi Ebadi -
Open Access Article
14 - 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
15 - 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
16 - Sol-Gel Fabrication and Photocatalytic Properties of Indium Oxide-CNT Composite
Giang Li Lnfeng Hu -
Open Access Article
17 - Facile synthesis of Ni/NiO nanocomposites via thermal decomposition
Aliakbar Dehno Khalaji Gholamhossein Grivani Shaghayegh Izadi Mehdi Ebadi -
Open Access Article
18 - 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
19 - 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
20 - An Investigation on the Application of CNT-Aluminum Nanocomposite in Mechanical Alloying
Pavel Kirshkov Jasmin Liakov Raha Vasegh -
Open Access Article
21 - Machining Operation Parameters in Drilling Process; Variation of Thrust Forces in Epoxy Based Nanocomposites
Hamzeh Shahrajabian Masoud Farahnakian Mehdi Moghri -
Open Access Article
22 - 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
23 - 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
24 - 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
25 - 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
26 - 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
27 - 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
28 - 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
29 - 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
30 - 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
31 - 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
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