Microstructure Evaluation of Acrylonitril-Butadiene Copolymer Nanocomposites Reinforced by Nano-Calcium Carbonate by Permeability Test
Subject Areas : journal of New Materials
1 - دانشجوی دکتری، دانشگاه آزاد اسلامی، باشگاه پژوهشگران جوان و نخبگان، واحد امیدیه.
Keywords: Microstructure, mechanical properties, Nanocomposite, Nano-Calcium Carbonate, Permeability,
Abstract :
Attempt to significant decreasing of permeability of polymeric material in versus liquid and gases for production of inert polymeric products in engineering applications have special situation in research. The purpose of this research is to study the permeability behavior of Acrylonitril-Butadiene copolymerre inforced by calcium carbonate nanoparticles in the temperature range 25–45°Cand using the solvent permeability tests to microstructure evaluation of the polymer nanocomposites. Results show the concentration of nano particle plays an important role in the diffusion, sorption and permeation coefficients and by increasing the amount ofnano-CaCO3up to optimum content (10-15%) decrease in the secoefficients (22% decrease in diffusion coefficient)is observed, whereas for higher concentrations, especially at higher temperature increasing trend were obtained for the secoefficients. By increase temperature, diffusion mechanism is more close to Ficki an mechanism. Increase of nano particle concentration in nanocomposite decrease ultimate swelling and diffusion rate of solvent and also activation energy (up to two fold).The micro structure and the dispersion of nano-CaCO3in the polymer matrix was evaluated using SEM micrographs and an appropriate relationship was established between the micro structure and the experimental results(permeability and mechanical properties).In general, swelling test and mechanical analysis an delectron micro scope images were presented similar behavior for prepared nanocomposites and can be recommended that swelling and permeability test scan be used as an inexpensive and simple method to characterization and evaluation of the properties of polymer nanocomposites.
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