高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (11): 1814.

• 论文 • 上一篇    下一篇

磺化丁基橡胶离聚体在溶液中的聚集行为(Ⅰ)──ESR谱研究

曾兆华1, 冯克1, 李卓美1, 张建辉2   

  1. 1. 中山大学高分子研究所, 广州, 510275;
    2. 中山大学化学系, 广州, 510275
  • 收稿日期:1994-11-30 修回日期:1995-04-27 出版日期:1995-11-24 发布日期:1995-11-24
  • 通讯作者: 曾兆华,男,32岁,博士,讲师.
  • 作者简介:曾兆华,男,32岁,博士,讲师.
  • 基金资助:

    国家自然科学基金

Aggregation Behaviour of Sulfonated Butyl Rubber Ionomers in Solution(I)──ESR Spectra Analysis

ZENG Zhao-Hua1, FENG Ke1, LI Zhuo-Mei1, ZHANG Jian-Hui2   

  1. 1. Institute of Polymer Science, Zhongshan University, Guangzhou, 510275;
    2. Department of Chemistry, Zhongshan University, Guangzhou, 510275
  • Received:1994-11-30 Revised:1995-04-27 Online:1995-11-24 Published:1995-11-24

摘要: 用ESR谱考察了磺化丁基橡胶锰盐(Mn-SIIR)离聚体在二甲苯/醇(少量)混合溶剂中的离子聚集行为。结果表明,在所考察的范围内,浓度及磺化度增大时ESR谱的形状变化不大,这反映了离子聚集程度并没有发生明显变化;另外,极性共溶剂(醇)增多时,谱线分辨度增大,反映了离子聚集程度下降;温度升高时谱线变模糊,反映离子聚集程度增大。这些结果有力地支持了Lundberg等人提出的离聚体溶液粘度变化平衡式。

关键词: 离聚体, ESR谱, 粘度, 聚集行为

Abstract: Electron Spin Resonance(ESR)measurements on manganese-ionomers of sulfonated butyl rubber(Mn-SIIR)show that polar cosolvents such as alcohols could solvate the ionic groups and then destroy ionic aggregation. The solvation would be weakened and the ionic aggregation increased as temperature increased.These are in agreement with the results from viscosity measurements of ionomer in mixed solvents. But the content of ionicgroups in solution had no significant effect on the degree of ionic aggregation.

Key words: Ionomer, ESR spectra, Viscosity, Aggregation behavour

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