应用化学 ›› 1992, Vol. 0 ›› Issue (3): 58-62.

• 研究简报 • 上一篇    下一篇

从特性粘数和GPC谱图获得数均分子量方法的误差分析

尹名东, 富彦珍, 李济根   

  1. 齐齐哈尔轻工学院化工系, 齐齐哈尔 161006
  • 收稿日期:1990-08-14 修回日期:1991-05-22 出版日期:1992-06-10 发布日期:1992-06-10

ON THE ERROR ANALYSIS OF THE METHOD OF ESTIMATING NUMBER AVERAGE MOLECULAR WEIGHT OF POLYMER

Yin Mingdong, Fu Yanzen, Li Jigen   

  1. Department of Chemical Engineering, Qiqihar Institute of Light Industry, Qiqihar 161006
  • Received:1990-08-14 Revised:1991-05-22 Published:1992-06-10 Online:1992-06-10

摘要: 凝胶渗透色谱法(GPC)广泛用于测量高聚物的分子量及其分布,但即使是根据普适校准原理也需知道溶液体系的K、α值。已经提出了几种改进方法来估算分子量[2,5,7],其中文献[2]提出利用特性粘数和GPC谱图来估算平均分子量。后来有些学者从实验角度对此方法进行了评价[3,4]。本文选用Wesslau分布[1]的正态分布模型GPC谱图为例来讨论这一方法的估算误差。

关键词: GPC, 特性粘数, 数均分子量, 聚合物

Abstract: An error analysis was made to evaluate the method of estimating number average molecular weight of polymer samples from the intrinsic viscosity and GPC chromatogram[2]. The evaluation was made according to a mcdel chrematogram of normal distribution and the result was in good agreement with that obtained from the real polymer samples.

Key words: GPC, intrinsic viscosity, number average molecular weight, polymer