高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (8): 1149.

• 论文 • 上一篇    下一篇

FTIR和ESR法研究离聚体溶液中的离子相互作用

冯克, 欧阳巍, 李卓美   

  1. 中山大学高分子研究所, 广州, 510275
  • 收稿日期:1992-03-03 出版日期:1992-08-24 发布日期:1992-08-24
  • 通讯作者: 冯克
  • 基金资助:

    中山大学科学研究基金

Studies on the Ionic Interaction in lonomer Solution by FTIR and ESR

FENG Ke, OUYANG Wei, LI Zhuo-Mei   

  1. Institute of Polymer Science, Zhongshan University, Guangzhou, 510275
  • Received:1992-03-03 Online:1992-08-24 Published:1992-08-24

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被引次数

3

摘要： 磺化乙丙三元共聚物(SEPDM)离聚体在二甲苯/5%正己醇混合溶剂中具有特异的粘浓关系和粘温关系[1],估计是由于金属离子被己醇溶剂化而影响离子间相互作用引起的,但尚未有更多的实验数据加以验证.本文用FTIR和ESR方法对SEPDM离聚体溶液作进一步考察,发现金属离子与己醇确实存在溶剂化效应,溶剂化程度与离子的大小、浓度和温度有关,它直接影响离子在溶液中存在的状态(单离子或离子聚集体),这些结果为从分子水平了解离聚体溶液性质提供了理论根据.用波谱方法研究离聚体溶液中的离子相互作用尚鲜见报道.

关键词: 离聚体, EPDM磺酸盐, FTIR ESR

Abstract: FTIR and ESR have been used to study the influence of the xylene/hexanol ratio on the cation-anion and cation-cation interactions in sulfonated EPDMionomers.FTIRresults show that the interaction between the solvated metallic ions and SO3- is in the order Li<Na<K,while for the ions without solvation the order is the reverse (Li>Na>K).The ESRspectra of SEPDM-Mn ionomers indicate that both isolated Mn2+ and Mn2+ cluster exist in the solution.The Mn2+ cluster is favored in less hexanol cosolvent and at high temperature,which is believed to be the reason for the viscosity increase of the ionomer solution with increasing temperature.

Key words: Ionomer, Sulfonated EPDM(SEPDM), FTIR, ESR

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