丙烯腈-马来酸酐共聚物的表征

Characterization of Acrylonitrile-Maleic Anhyoride Copolymer

以亚硫酸氢钠－过硫酸铵为引发体系，进行丙烯腈同马来酸酐的水相沉淀共聚合反应。采用红外光谱、核磁共振、热失重及差热分析等技术对丙烯腈－马来酸酐共聚物进行了表征，并获得有关结论。

Initiated by (NH4 )2S2O8NaHSO3, the coploymer of acrylonitrile-maleic anhydride (AN-MA)was synthesized through precipitation polymerization in water phase and characterized by FTIR,H-NMR,TG,and DTA. According to FTIR and H-NMR, acrylonitrile and maleic anhydride were copolymerized well in the system. And the thermal property of the copolymer is superior to that of pure polyacrylonitrole. The glass temperature of the copolymer increased linearly with the MA content in the copolymer:T9≈90. 19+ 2. 06F2. Futhermore,the thermal decomposition temperature and the peak shape were influenced greatly by the content of MA.