中华医学超声杂志

应用化学 ›› 1994, Vol. 0 ›› Issue (4): 62-65.

• 研究论文 • 上一篇    下一篇

聚苯胺溶液的凝胶化行为

董岸杰, 景遐斌, 王伟, 冯之榴   

  1. 中国科学院长春应用化学研究所高分子物理开放研究实验室 长春 130022
  • 收稿日期:1993-12-25 修回日期:1994-04-20 出版日期:1994-08-10 发布日期:1994-08-10

The Gelation Behaviour of Polyaniline Solution

Dong Anjie, Jing Xiabin, Wang Wei, Feng Zhiliu   

  1. changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun l30022
  • Received:1993-12-25 Revised:1994-04-20 Published:1994-08-10 Online:1994-08-10

PDF

492

被引次数

4 | 1

摘要： 通过流变学手段对聚苯胺溶液的凝胶化行为研究表明,在室温下,聚苯胺(PAn)/N-甲基-2-吡咯烷酮(NMP)溶液有一转折浓度Cg(0.05g/mL),浓度高于此值时,浴液凝胶化速度急剧增大,凝胶速度还与溶剂,PAn分子量及溶液的温度有很大关系。溶液中不溶的PAn的存在会加速凝胶化过程。PAn/NMP凝胶的假塑性和触变性明显地反映出PAn/NMP溶液的凝胶化是溶剂参与的PAn分子链间的物理交联过程。

关键词: 聚苯胺溶液, 凝胶化, 假塑性, 触变性

Abstract: The gelation behaviour of the polyaniline (PAn)/N-methyl-2-pyrrolidone(NMP) solution was studied by rheological method.A critical concentration near 0.05g/mL for the PAn/NMP solution at room temperature was observed.The gelation rate was found to be dependent on the solvent,molecular weight of PAn,and the temperature of the solution. The insoluble fraction in the PAn solution could accelerate the gelation. The pseudo-plastic and thixotropic behavior of the PAn/NMP gel obveously revealed the existence of physical cross-linking in the PAn/NMP solution under participation of the solvent.

Key words: polyaniline solution, gelation, pseudo-plasticity, thixotropy

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