摘要
在溶液聚合的转化率比较高时，直接对反应液进行稀释并测其粘度来求聚合物的分子量。简化了通常测定过程中的压膜、烘干、重新溶解等步骤，明显缩短了测定的时间，更能适合于现场分析。对于丙烯腈与衣糠酸在二甲基亚砜中的共聚物，利用单点法进行测定，相对误差为1％。
When the recovery was higher during the solution polymerization, the molecularweight of AN-IA copolymer was calculated by using the intrinsic viscosities of the diluted reactionsolutions. Because the universal processes of film preparing, washing, drying and re-dissolvingwere simplified, the analysis time was reduced substantially. The proposed method is moresuitable to rapid analysis. The measurement error for the copolymer in DMSO by the single pointmethod was about 1 %.
出处
《青岛化工学院学报（自然科学版）》
1999年第4期328-331,共4页
Journal of Qingdao Institute of Chemical Technology(Natural Science Edition)
基金
国家自然科学基金!59783002
关键词
溶液聚合
粘均分子量
共聚物
聚丙烯腈纤维
solution polymerization
acrylonitrile
itaconlc acid
molecular weight
dimethyl sulfoxide
