%0 Journal Article
%T 凝胶渗透色谱-激光光散射法测定甲基-乙烯基-苯基硅橡胶相对分子质量及其分布
%A 李胜华
%A 王敏
%A 章园园
%A 谭利敏
%J -
%D 2019
%R 10.12136/j.issn.1000-890X.2019.03.0230
%X 采用凝胶渗透色谱(GPC)-激光光散射(LLS)联用测定甲基-乙烯基-苯基硅橡胶(MPVQ)相对分子质量及其分布。确定测定条件如下:溶剂 甲苯,测试温度 25 ℃,流速 1 mL·min-1,试样溶液质量浓度 4 mg·mL-1,进样量 50 μL,测定MPVQ的折光指数增量(dn/dc为(0.058 9±0.002 5) mL·g-1;MPVQ数均相对分子质量和重均相对分子质量测定的相对标准偏差分别为3.97%和1.52%,GPC-LLS法具有较高的准确度和精密度。;The molecular weight and its distribution of polymethylphenyl-vinyl silicone rubber(MPVQ)were determined by gel permeation chromatography(GPC)-laser light scattering(LLS) method. The testing conditions were as follows:solvent toluene,test temperature 25 ℃,flow speed 1 mL·min-1,sample solution mass concentration 4 mg·mL-1,injection volume 50 μL,and the dn/dc value of MPVQ was (0.058 9±0.002 5) mL·g-1.The relative standard deviations of the number average molecular weight and weight average molecular weight were 3.97% and 1.52%,respectively. This study showed that GPC-LLS method had high accuracy and precision
%K [甲基-乙烯基-苯基硅橡胶
%K 凝胶渗透色谱-激光光散射联用
%K 相对分子质量
%K 相对分子质量分布
%K 甲基-乙烯基-苯基硅橡胶
%K 凝胶渗透色谱-激光光散射联用
%K 相对分子质量
%K 相对分子质量分布
%K polymethulphenyl-vinyl silicone rubber
%K gel permeation chromatography-laster light scattering
%K molecular weight
%K molecular weight distribution]
%U http://www.rubbertire.cn/gy/xjgy/ch/reader/view_abstract.aspx?file_no=XJ2018-0120&flag=1