一种表征抗冲聚丙烯共聚物的分级方法A Fractionation Method for Characterizing Impact Polypropylene Copolymers
屠嵩涛
摘要(Abstract)：
通过两步法对抗冲聚丙烯共聚物进行分级,得到3个代表性级分:室温正辛烷可溶级分(RTC8-soluble)、沸腾正庚烷可溶级分(BTC7-soluble)和沸腾正庚烷不溶级分(BTC7-insoluble)。通过凝胶渗透色谱仪和核磁共振仪等研究各级分的结构及含量。结果表明:RTC8-soluble级分主要为乙丙无规共聚物,还有少量无规聚丙烯;BTC7-soluble级分为乙丙嵌段共聚物与中等规聚丙烯的混合物;BTC7-insoluble级分为高等规聚丙烯。利用该方法进行抗冲聚丙烯的表征,操作简洁方便。
关键词(KeyWords)： 抗冲聚丙烯;分级;表征;正辛烷;正庚烷
基金项目(Foundation):
作者(Author): 屠嵩涛
DOI: 10.19690/j.issn1004-3055.20200301
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