中华医学超声杂志

应用化学 ›› 1990, Vol. 0 ›› Issue (6): 48-53.

• 研究论文 • 上一篇    下一篇

辐照高聚物分子量分布的SEC-LALLS表征

张万喜, 王谋智, 孙家珍, 贺智端   

  1. 中国科学院长春应用化学研究所 长春 130022
  • 收稿日期:1989-03-18 修回日期:1990-04-29 出版日期:1990-12-10 发布日期:1990-12-10

CHARACTERIZATION OF MOLECULAR WEIGHT DISTRIBUTION OF IRRADIATED POLYMERS BY SEC-LALLS METHOD

Zhang Wanxi, Wang Mouzhi, Sun Jiazhen, He Zhiduan   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1989-03-18 Revised:1990-04-29 Published:1990-12-10 Online:1990-12-10

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摘要： 本文分析了长链支化存在下,SEC柱扩展效应对测定数据的影响并导出了基本方程组,给出方程组的解法,并通过计算机数值模拟确证此解法的可行性,同时还讨论了扩展效应、改正参数、实验误差对测定结果的影响。在此基础上,建议了以SEC-LALLS联用技术为核心的表征辐照高聚物分子量分布的系统化方法。

关键词: 辐照高聚物, 分子量分布, 体积排除色谱, 小角激光光散射

Abstract: In this paper, the effects of the extension influence of SEC column on the variables for a polymer with long chain branching were studied and the main coupled equations were drawn out and solved. The solving process is confirmed by computer simulation. The effects of the extension influence,correction parameter and experimental error on the results of determination have been discussed and a method for systematic characterization of themolecular weight distribution of irradiated polymers by SEC-LALLS technology was suggested.

Key words: irradiated polymer, molecular weight distribution, SEC, LALLS

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