%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