丙烯腈-衣康酸共聚物稀溶液的粘度行为  

Viscometric Behavior of Dilute Poly(Acrylonitrile-co-Itaconic Acid) Solution

作　　者：程璐[1,2] 王浩静[1] 欧阳琴[1,2] 郭向云[1] 

机构地区：[1]中国科学院煤炭科学研究所,炭材料重点实验室,太原030001 [2]中国科学院研究生院,北京100049

出　　处：《功能高分子学报》2008年第3期306-311,共6页Journal of Functional Polymers

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.

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 

分 类 号：O631.4[理学—高分子化学]