文献类型：期刊文献

中文题名：多检测GPC/SEC技术在高分子表征中的应用Ⅵ.MHS方程K、α参数的测定及α对分子量的依赖性

英文题名：Use of Multiple Detectors GPC/SEC in Polymer Characterization Ⅵ. Calibration of Samples and the Dependence of Exponent α of MHS Equation on Molecular Weight

作者：黄怿[1];卜乐炜[1];张德震[1];郝磊[1];苏诚伟[1];徐种德[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237

年份：2000

卷号：13

期号：2

起止页码：182

中文期刊名：功能高分子学报

外文期刊名：Journal of Functional Polymers

收录：CSTPCD;;CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：体积排斥色谱法;MHS方程;K,α参数;高分子表征

外文关键词：multi-detector SEC/RI/RALLS/DV; parameters K and α of MHS equation; molecular weight dependence

摘要：采用体积排斥色谱法 /示差折光指数 /直角激光光散射 /示差粘度三检测联用技术分别测定了窄分布和宽分布聚苯乙烯标样 ;得到了Mark -Houwink -Sakurada方程的K、α参数 ;计算了不同分子量范围的MHS方程指数α,建立了旋转半径和分子量的关系式。结果表明SEC/RI/RALLS/DV可以准确和方便地获取MHS方程的K、α参数 ,α值具有分子量依赖性。
PS standard samples with narrow and broad MWD were calibrated via SEC/RI/RALLS/DV. The good performance of the GPC/SEC instrument was confirmed. The dependence of exponent α of MHS equation on molecular weight was studied. The relationship of the radius of gyration(the root mean square radius) vs molecular weight was established. The results show that the SEC/RI/RALLS/DV technique can offer an effective way to obtain the parameters K、α of MHS equation, and the value of exponential α increases as the molecular weights of the samples increase.