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2012 , Vol. 70 >Issue 10: 1207 - 1212

DOI: https://doi.org/10.6023/A1107293

研究论文

APS/NaClO 复合氧化剂对乳液法合成聚苯胺的微观形貌及其电化学性能的影响

  • 马利 ,
  • 梁卫朝 ,
  • 甘孟瑜 ,
  • 黄超群 ,
  • 谷静连 ,
  • 杨雅文 ,
  • 李王林 ,
  • 张峰
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  • 重庆大学化学化工学院 重庆 400030

收稿日期: 2011-07-29

  修回日期: 2011-11-15

  网络出版日期: 2012-05-16

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Effect of APS/NaClO Composite Oxidant on Morphology and Electrochemical Properties of Polyaniline Prepared by Emulsion Polymerization

  • Ma Li ,
  • Liang Weichao ,
  • Gan Mengyu ,
  • Huang Chaoqun ,
  • Gu Jinglian ,
  • Yang Yawen ,
  • Li Wanglin ,
  • Zhang Feng
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  • College of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400030

Received date: 2011-07-29

  Revised date: 2011-11-15

  Online published: 2012-05-16

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摘要

采用乳液法, 以过硫酸铵(APS)和次氯酸钠(NaClO)为复合氧化剂合成导电聚苯胺(PANI). 考察了NaClO 的加入与否对PANI 微观形貌与电化学性能(循环伏安和电导率)的影响, 以及APS、乳化剂十二烷基苯磺酸钠(SDBS)和NaClO的用量对PANI 电化学性能的影响. 结果表明: NaClO 的加入对PANI 的微观取向结构具有重要的影响. 与采用单一APS 合成的PANI 相比, 复合氧化剂合成的PANI 具有较高的循环伏安峰电流以及更加优异的电导率(约为前者的2.6倍). 当苯胺(An)与APS 的物质的量比(nAn:nAPS )为8:7, An 与SDBS 的物质的量比(nAn:nSDBS )为10:4, NaClO 用量为5%(质量分数)时, PANI 的各项性能指标达到最好; 紫外可见光谱和红外光谱的表征结果表明, 采用复合氧化剂并未对PANI 的分子结构产生明显的影响.

关键词： 聚苯胺; 乳液法; 复合氧化剂; 电化学性能

本文引用格式

马利 , 梁卫朝 , 甘孟瑜 , 黄超群 , 谷静连 , 杨雅文 , 李王林 , 张峰 . APS/NaClO 复合氧化剂对乳液法合成聚苯胺的微观形貌及其电化学性能的影响[J]. 化学学报, 2012 , 70(10) : 1207 -1212 . DOI: 10.6023/A1107293

Abstract

Conductive polyaniline (PANI) was prepared by emulsion polymerization with ammonium persulfate (APS) and sodium hypochlorite (NaClO) as composite oxidant. Whether add the NaClO or not, the morphology and electrochemical properties (cyclic voltammogram and electrical conductivity) of PANI were discussed. Moreover, the effect of the concentrations of APS, sodium dodecylbenzenesulfonate (SDBS) and NaClO on electrochemical properties of PANI was discussed. The experimental results showed that NaClO had an important effect on the morphology of PANI. Compared with the PANI synthesized by APS alone, the PANI synthesized by APS and NaClO composite oxidant has higher redox peak current and higher conductivity (which is about 2.6 times the former). The optimal properties of PANI was achieved when the molar ratio of aniline (An) to APS was 8:7, the molar ratio of An to SDBS was 10:4 and Na- ClO was 5% (w). UV-Vis and FT-IR indicated that the structure of PANI synthesized by composite oxidant was similar to the PANI synthesized by APS alone.

Key words： polyaniline; emulsion method; composite oxidant; electrochemical properties

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