作　　者： ;

机构地区： 仲恺农业工程学院化学化工学院

出　　处： 《仲恺农业工程学院学报》 2009年第2期10-13,27,共5页

摘　　要： 通过硝酸作用使聚丙烯降解并氧化制备了末端羧基化聚丙烯,并就硝酸质量分数、反应温度、反应时间对羧基含量的影响进行了研究,对末端羧基化聚丙烯进行了红外表征和热性能分析。结果表明,增大硝酸质量分数、提高反应温度、延长反应时间能使羧基含量提高,相对于未改性聚丙烯,末端羧基化聚丙烯的熔点降低、热稳定性下降。 End-terminated carboxylic polypropylene （PP） was prepared by the oxidative degradation of polypropylene with nitric acid. Effects of various factors such as nitric acid concentration, reaction temperature and reaction time on content of carboxyl group were studied. The end-terminated carboxylic polypropylene was characterized by FTIR and thermal stability studies. The results showed that the higher nitric acid concentration, higher reaction temperature and longer reaction time, the higher content of carboxyl group was. The melting point and heat decomposition temperature of end-terminated carboxylic polypropylene decreased as compared to unmodified PP.

关 键 词： 聚丙烯 硝酸 氧化 羧基

领　　域： [理学] [理学]