高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (5): 816.

• 论文 • 上一篇    下一篇

离聚体分子链的络合作用对溶液性质的影响

曾兆华, 冯克, 李卓美   

  1. 中山大学高分子研究所, 广州, 510275
  • 收稿日期:1994-06-28 修回日期:1994-12-23 出版日期:1995-05-24 发布日期:1995-05-24
  • 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

Effect of Coordination Between Polymer Chains on the Solution Behavior of Zn-SIIR/PSVP Blends

ZENG Zhao-Hua, FENG Ke, LI Zhuo-Mei   

  1. Institute of Polymer Science, Zhongshan University, Guangzhou, 510275
  • Received:1994-06-28 Revised:1994-12-23 Online:1995-05-24 Published:1995-05-24

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被引次数

2

摘要： 考察了磺化丁基橡胶锌盐离聚体(Zn-SIIR)与苯乙烯-4-乙烯基吡啶共聚物(PSVP)的络合作用及其对共混物溶液性质的影响。小分子含氮化合物(胺及吡啶)对Zn-SIIR的离子聚集体有强烈的破坏作用,表明大分子链上的锌离子能与碱性氮原子发生络合作用。Zn-SIIR/PSVP共混物溶液的粘度高于单组分溶液的粘度,这是两种分子链间存在络合作用而形成大分子交联网络的结果。根据粘度最大时所对应的组分含量,估计Zn与N的配位比为1:2.醇对锌离子的溶剂化作用使分子链间的络合作用减弱、粘度下降,溶液浓度增加时,大分子网络增大,导致粘度迅速上升。温度升高可减弱溶剂化作用,从而增强分子链间的络合,粘度上升,即出现反常粘温关系。

关键词: 磺化丁基橡胶, 苯乙烯-4-乙烯基吡啶共聚物, 共混物, 络合作用, 粘度

Abstract: Ionic coordination between zinc sulfonated butyl rubber(Zn-SIIR) and styrene-4 vinyl-pyridine copolymer(PSVP) in solution was investigated. It was found that viscosity of the blend solution varied with the composition and attained maximum as the molar ratio of zinc sulfonated groups to pyridine groups was 1:1,implying that coordination-type interac tion occurred between the two kinds of groups, and each zinc ion coordinated with two nitro gen atoms in pyridine rings. The coordination strongly affected the solution behavior of Zn SIIR/PSVP blends. Viscosity increased rapidly as concentration of the blend increased. Un usual viscosity-temperature relationship was found for the blend solutions with low levels of polar cosolvent (hexanol).

Key words: Zn-SIIR, PSVP, Polymer blend, Coordination, Viscosity

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