Fereshte Motiee Articles List

List of Articles Fereshte Motiee

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1 - Cure Characteristics and Physico-mechanical Properties of the Stearic Acid Surface of Modified Calcium Carbonate Reinforcement NR/SBR Compounds
Mercedeh Malekzadeh Fereshteh Motiee Saeed Taghvaei-Ganjali Zeynab Abdollahzadeh
20.1001.1.20083815.2016.10.3.3.1

Calcium carbonate is a cheap and readily available filler used in rubber industry. This material is not compatible with rubber matrix, so many researchers have tried to modify its surface with various materials in order to increase its hydrophobicity and improve compati More

Calcium carbonate is a cheap and readily available filler used in rubber industry. This material is not compatible with rubber matrix, so many researchers have tried to modify its surface with various materials in order to increase its hydrophobicity and improve compatibility with the rubber matrix. In this effort, surface modification of calcium carbonate was carried out by 1.5%, 3% and 4% stearic acid to achieve the technical knowledge of preparation method. The surface adjustments were investigated by Fourier transform infrared spectroscopy (FTIR), thermal analysis (TA), and scanning electron microscopy (SEM) and were compared with imported surface modified calcium carbonate (ISMCC) used in the rubber industry. Results showed surface modifications have been accomplished successfully. Furthermore, efficiencies of the prepared surface modified calcium carbonates (SMCCs) were investigated as fillers in the NR/SBR-based compounds. Cure characteristics and physico-mechanical properties of the compounds were considered and compared with reference compound that contained ISMCC. Using calcium carbonate modified by 3% stearic acid as a filler (SMCC(2)) not only preserved compound properties but also improved tensile properties, shortened the cure time and improved aging resistance in comparison with ISMCC. Manuscript profile
Open Access Article
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2 - Preparation and Characterization of Nano ZnFe2O4 Supported on Copper Slag and its Effects on the Degradation of p-Xylene Aqueous Solution
Hossein Malekhosseini Morteza Khosravi Kazem Mahanpoor Fereshteh Motiee
20.1001.1.20083815.2020.14.1.5.7

One of the problems in removing pollutants from water by photocatalytic methodsistheseparationof thecatalystfrom thesolution. In this study, the catalyst stabilization method was used to solve this problem. Nano ZnFe2O4 supported on Copper Slag (CS) produced in this res More

One of the problems in removing pollutants from water by photocatalytic methodsistheseparationof thecatalystfrom thesolution. In this study, the catalyst stabilization method was used to solve this problem. Nano ZnFe2O4 supported on Copper Slag (CS) produced in this research is an environment-friendly, simple and cost-effective catalyst. ZnFe2O4 was prepared for co-precipitation methods and supported on CS by the thermal process. Its characterization was done by scanning electron microscopy (SEM) images, energy-dispersive X-ray spectroscopy (EDX), BET surface area and X-Ray diffraction patterns (XRD). The degradation of p-Xylene as a pollutant in water was performed by the UV + H2O2 process using ZnFe2O4/CS as a photocatalyst. Circulate Packed Bed Reactor (CPBR) was used. For photocatalytic degradation of the p-Xylene, full factorial experimental design with three factors containing pH, the initial concentration of p-Xylene and H2O2 in three levels was used. The best conditions were determined as pH= 9, the concentration of p-Xylene= 70 ppm and concentration of H2O2= 20 ppm. Degradation efficiency in the best condition was 95.40 %. This new catalyst can also be used in processes for organic pollutant degradation. Manuscript profile

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List of Articles Fereshte Motiee