多检测器GPC/SEC技术测定EVA绝对分子质量及其分布的研究  

Determination of EVA absolute molecular weight and its distribution by multi-detector GPC/SEC

作　　者：王小莉[1] 谌晓玲[1] 王莉[1] 陈晓华[1] 

机构地区：[1]西南化工研究设计院有限公司,四川成都610225

出　　处：《天然气化工—C1化学与化工》2013年第6期84-86,共3页Natural Gas Chemical Industry

摘　　要：采用GPC-示差折光(RI)-在线稀溶液粘度计(VIS)-双角度(小角/直角)光散射(LS)多检测器联用技术直接测定EVA绝对分子质量及其分布,并对测试过程中的有关条件进行了优化。结果显示,该方法可以准确地测定EVA的绝对分子质量和分子质量分布、特性黏数、Mark-Houwink方程系数以及高分子尺寸等重要参数。The GPC/SEC system with RI, VIS and LS was adopted for determination of the absolute molecular weight and its distribution of EVA, and the test conditions involved were optimized. The results showed that EVA＇s absolute molecular weight anti itst,tion, intrinsic visc.osit, Mark-Houwink coefficient and molecular size could be detected accurately hy this method

关 键 词：多检测器GPC SEC技术 EVA 绝对分子质量 分子质量分布 

分 类 号：TQ317.2[化学工程—高聚物工业]