Studies on Thermal, Microbial Behaviours of Copoly(azo-maleimide-Acrylic Acid/Vinyl Acetate) and Terpoly(azo-maleimide-acrylic acid-vinyl acetate): Synthesis and Characterization

摘要

A terpolymer based on polymerizable monomer unit of N-substituted maleimide associated with azo moiety as a pendent group, acrylic acid and vinyl acetate was chemically architected. The preparation of terpolymer was accelerated by free radical polymerization using A1BN initiator at 70 ± 2 °C in THF solvent. Copolymers of maleimide with acrylic acid/vinyl acetate have also been synthesized, characterized and results were comparatively analyzed with terpolymer. The thermal properties of terpolymer and copolymers such as glass transition temperature (T_g) and thermal decomposition were determined by DSC and TGA analysis respectively. The weight molecular weight (M_w) and number average molecular weight (M_n) were determined by gel permeation chromatography. Density measurement, solubility test, viscosity test, elemental analysis, FT-IR, ~1H NMR spectral analysis were used to characterization of terpolymer and copolymers.