文献类型：期刊文献

中文题名：超临界CO2环境中聚丙烯固相接枝甲基丙烯酸缩水甘油酯

英文题名：Supercritical Carbon Dioxide-Assisted Solid-State Free Radical Grafting of Glycidyl Methacrylate onto Polypropylene

作者：吴寅林[1];刘涛[1];童刚生[1];赵玲[1]

机构：[1]化学工程联合国家重点实验室,华东理工大学联合化学反应工程研究所,上海200237

年份：2009

卷号：25

期号：2

起止页码：24

中文期刊名：高分子材料科学与工程

外文期刊名：Polymer Materials Science & Engineering

收录：CSTPCD;;EI(收录号：20091311983039);Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金重大基础研究项目(20490204);国家自然科学基金面上项目(50703011)

语种：中文

中文关键词：超临界CO2;聚丙烯;固相接枝;甲基丙烯酸缩水甘油酯

外文关键词：supercritical carbon dioxide; polypropylene; solid-state grafting; glycidyl methacrylate

摘要：对超临界CO2环境中聚丙烯固相接枝甲基丙烯酸缩水甘油酯反应过程进行了研究。考察了反应时间、CO2的压力、单体用量、引发剂用量以及反应温度对接枝产物接枝率和凝胶率的影响,获得了较优的接枝反应条件。结果表明,与熔融接枝和传统固相接枝过程相比,采用超临界固相接枝过程制得的接枝物具有接枝率高、凝胶率低且降解程度低等优点。同时接枝产物的接枝率和凝胶率除了可通过改变单体用量和引发剂用量进行调节外,还可通过改变CO2的压力进行调节。
The work reported in this paper was aimed at exploring the advantages of using supercritical carbon dioxide （scCO2） as an environmentally benign solvent and swelling agent for carrying out the free radical grafting process of glycidyl methacrylate （GMA） onto isotactic polypropylene （PP） in the solid state. The effects of various factors on the grafted content and gel content were investigated. Those factors include reaction time, CO2 pressure, monomer and initiator concentrations. Results show the scCO2-assisted solid-state process produces much higher grafted content, and less degradation of iPP than the classical solid-state or melt processes does. The gel content of PP-g-GMA obtained by scCO2-assisted solid-state process is less than those obtained by the classical solid-state process. Under scCO2, the monomer and initiator concentrations can regulate the grafted content and gel content with ease and also the CO2 pressure.