Supercritical Co < Sub > 2 < / Sub > The Copolymerization Reaction Of Polycarbonate

Carbon dioxide is the main greenhouse gas. How to reduce CO2and strengthen the comprehensive utilization of CO2is urgently to be solved with the sustainable development of modern industry. Using carbon dioxide and epoxy compound to synthesis aliphatic carbonate is an effective way of chemical fixing carbon. The synthesis of aliphatic carbonate(APC) with carbon dioxide and epoxy compound as raw material has great application prospects.In this paper, in order to improve the catalytic efficiency of glutaric acid zinc, glutaric acid zinc should be loaded on different carrier. Through the orthogonal experiment, a suitable supported catalyst, was selected to catalize the copolymerization reaction of carbon dioxide and epoxy propane. The structure and properties of the supported catalyst was also detected.Through the screening, the molecular sieve catalyst was choosed to catalyze the copolymerization of supercritical carbon dioxide and epoxy propane. In experiments, the reaction temperature, reaction pressure reaction time and the amount of catalyst were changed in order to get the best reaction conditions. The structure and properties of the binary copolymer product was determined by the infrared spectrum(FTIR). nuclear magnetic resonance (NMR) and molecular weight determination.The terpolymerization of epoxy propane, carbon dioxide and maleic anhydride was also studied, The structure of the copolymer and molecular weigh were adjusted by changing the additive amount of the third monomer maleic anhydride in order to get the best reaction effect. The structure and properties of the copolymer product was was illustrated FTIR.1H-NMR and C-NMR nuclear magnetic resonance (NMR) and molecular weight determination.Through binary copolymerization and terpolymerization experiment, the mechanism of binary copolymerization and terpolymerization was predicted for further study and application.