摘要
采用乌氏粘度计研究了丙烯腈-衣康酸共聚物稀溶液的粘度行为,探讨了羧基含量对聚丙烯腈稀溶液偏离Huggins方程的异常行为的影响。结果表明:随着羧基含量增加,溶液粘度偏离Huggins方程越严重,要准确测定聚丙烯腈树脂的分子量,必需适当提高其溶液浓度,避开偏离区域。
The viscometrie behavior of dilute poly（acrylonitrile-co-itaconic acid） solution was studied by means of Ubbelohde viscometer. By investigating the effect of carboxyl content on the deviation to Huggins equation in dilute polyacrylonitrile solution, it is found that the deviation becomes more serious with carboxyl content increasing. It is suggested that the proper increase of the solution concentration can avoid the deviation zone and obtain a more accurate molecular weight of the copolymer.
出处
《功能高分子学报》
CAS
CSCD
北大核心
2008年第3期306-311,共6页
Journal of Functional Polymers
关键词
丙烯腈-衣康酸共聚物
稀溶液
特性粘度
吸附效应
聚电解质效应
poly（acrylonitrile-co-itaconic acid）
dilute solution
intrinsic viscosity
adsorption effect
polyeleetrolyte effect
