聚碳酸酯黏均分子量测定方法改进  

Improvement of Determination Method for Viscosity Average Molecular Weight of Polycarbonate

作　　者：牟光银 张燕 何祥 江海波 施静峰 Mu Guang-yin;Zhang Yan;He Xiang;Jiang Hai-bo;Shi Jing-feng

机构地区：[1]四川中蓝国塑新材料科技有限公司质安部,四川泸州646200

出　　处：《化工设计通讯》2020年第10期88-88,95,共2页Chemical Engineering Design Communications

摘　　要：聚合物溶液的黏度与聚合物相对分子量之间有一定的关系,因此可以利用这种关系间接算出聚合物的相对分子量。聚碳酸酯黏均分子量测定选用溶剂为二氯甲烷,因二氯甲烷易挥发,致重复性欠佳且测试结果随温度影响较大,为减少环境温度变化带来的误差,改用1,2-二氯乙烷作溶剂,能有效克服上述缺点,提高测试结果的准确度。there is a certain relationship between the viscosity of polymer solution and the relative molecular weight of polymer.Dichloromethane is chosen as solvent for viscosity average molecular weight determination of polycarbonate.Dichloromethane is easy to volatilize,which leads to poor repeatability and the test results are greatly affected by temperature.In order to reduce the error caused by environmental temperature change,1,2-dichloroethane is used as solvent,which can effectively overcome the above shortcomings and improve the accuracy of test results.

关 键 词：聚碳酸酯 黏均分子量 1 2-二氯乙烷 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]