Elaboration of Nanocomposites Based on Poly (Ethyl Methacrylate-co-Acrylonitrile) by in Situ Polymerization Using an Algerian Bentonite. Thermal Stability and Kinetic Study

摘要

This contribution focuses on the synthesis and characterization of nanocomposites based on poly (ethyludmethacrylate-co-acrylonitrile) (PEMAN) and different loadings of an organically modified bentonite fromudAlgeria prepared via in situ polymerization.udTEM images and X-ray patterns revealed that depending on the loading of this clay, intercalated orudpartially exfoliated nanocomposites were obtained. These nanocomposites showed an increase in theirudglass transition temperature compared to the pure copolymer as investigated by Differential ScanningudCalorimetry and improved thermal stability as evidenced by Thermogravimetric analysis and kinetics ofudtheir thermal degradation. Activation energies (Ea) of thermal decomposition of PEMAN and its nanocompositesudwere determined by Flynn–Wall–Ozawa and Kissinger-Akahira-Sunose methods. The changes inud(Ea) value with the level of conversion suggest a significant improved thermal stability of the nanocompositesudcompared to the copolymer matrix.When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35084