文章摘要
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
Determination of Molecular Weight and Its Distribution of MPVQ by Gel Permeation Chromatography-Laser Light Scattering Method
投稿时间:2018-03-24  修订日期:2018-03-24
DOI:10.12136/j.issn.1000-890X.2019.03.0230
中文关键词: 甲基-乙烯基-苯基硅橡胶  凝胶渗透色谱-激光光散射联用  相对分子质量  相对分子质量分布
英文关键词: polymethulphenyl-vinyl silicone rubber  gel permeation chromatography-laster light scattering  molecular weight  molecular weight distribution
基金项目:
作者单位E-mail
谭利敏* 中国航天科技集团四院四十二所 358957343@qq.com 
李胜华 中国航天科技集团四院四十二所  
王 敏 中国航天科技集团四院四十二所  
章园园 中国航天科技集团四院四十二所  
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中文摘要:
      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。
英文摘要:
      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.
Author NameAffiliationE-mail
TAN Limin The 42nd Institute of the Fourth Academy of CASC 358957343@qq.com 
LI Shenghua The 42nd Institute of the Fourth Academy of CASC  
WANG Min The 42nd Institute of the Fourth Academy of CASC  
ZHANG Yuanyuan The 42nd Institute of the Fourth Academy of CASC  
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