高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (9): 1560.

• 论文 • 上一篇    下一篇

二次掺杂对聚苯胺导电复合物性能的影响

马永梅, 王向阳, 过俊石, 谢洪泉   

  1. 华中理工大学化学系, 武汉 430074
  • 收稿日期:1996-07-03 出版日期:1997-09-24 发布日期:1997-09-24
  • 通讯作者: 马永梅, 男, 32岁, 博士研究生, 讲师
  • 作者简介:马永梅, 男, 32岁, 博士研究生, 讲师

Effect of Secondary Doping on Properties of the Conductive Composites of Polyaniline

MA Yong Mei, WANG Xiang-Yang, GUO Jun-Shi, XIE Hong-Quan   

  1. Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074
  • Received:1996-07-03 Online:1997-09-24 Published:1997-09-24

摘要: 研究了聚苯胺与(苯乙烯-丁二烯)三嵌段共聚物或氯磺化聚乙烯的复合物在间甲酚二次掺杂前后电导率的变化(提高2个数量级), 根据二次掺杂使聚苯胺复合物增强永久形变和断面形貌脆断结果, 认为二次掺杂使卷曲的聚苯胺链展开并通过分子链间的弱相互作用而自行组成导电通路.复合物二次掺杂前后的抗张强度和伸长率变化不大, 说明其主链间的弱相互作用对应力无贡献.此外, 还研究了二次掺杂对复合物在中性和酸性介质中电致变色活性的影响,

关键词: 二次掺杂, 聚苯胺, 复合物, 导电性, 电致变色性能

Abstract: The conductivity of composite, which was prepared by in situ emulsionpolymerization technique, shows different percolation thresholds: 21. 0% for PAn/CSPEand 7. 0%for PAn/SBScomposites cast from solution. It Increases two orders of magnitude andexhibits a new percolation threshold 3. 0% for two kinds of composites after secondary dopingwith mucresol. The secondary doping noticeably increases permanent set change withpolyaniline content. The SEMimage of broken section shows that the secondary dopingchanges the ductile fracture Into the brittle fracture. The results show that the secondarydoping induced a tenuous interconnected network through expanded polyaniline backbone.Secondary doping had no marked effect on tensile strength and elongation, which Indicatesthat the tenuous Interconnected network of the conductive component had no contribution forstress-transfer. Electrochromic performance of composite film was also studied in neutral oracidic electrolyte.

Key words: Secondary doping, Polyaniline, Composite, Conductivity, Electrochromic property

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