摘要
The molecular weight of acrylonitrile/itaconic acid copolymer can be calculated from the intrinsic viscosities of the dilute reaction solutions directly, when the conversion was higher than 90% during the solution polymerization. Because of the sample treatment processes such as film preparing, washing, drying and redissolving were simplified, the analysis time was reduced substantially. The proposed method is more suitable for rapid analysis. The measurement error compared with common method of determination for the copolymer in DMSO by single point method was about 1%.
The molecular weight of acrylonitrile/itaconic acid copolymer can be calculated from the intrinsic viscosities of the dilute reaction solutions directly, when the conversion was higher than 90% during the solution polymerization. Because of the sample treatment processes such as film preparing, washing, drying and redissolving were simplified, the analysis time was reduced substantially. The proposed method is more suitable for rapid analysis. The measurement error compared with common method of determination for the copolymer in DMSO by single point method was about 1%.
出处
《应用化学》
CAS
CSCD
北大核心
2000年第1期102-104,共3页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金!资助项目 ( 597830 0 2 )
关键词
丙烯腈
溶液共聚合
分子量测定
共聚物
粘度法
acrylonitrile,itaconic acid,solution copolymerization,viscosity average molecular weight determination
