Acta Chimica Sinica ›› 2012, Vol. 70 ›› Issue (10): 1207-1212.DOI: 10.6023/A1107293 Previous Articles     Next Articles

Full Papers

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   

  1. 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 出版日期:2012-05-28 发布日期:2012-05-16
  • 通讯作者: 马利 E-mail:mlsys607@126.com

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   

  1. College of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400030
  • Received:2011-07-29 Revised:2011-11-15 Online:2012-05-28 Published:2012-05-16

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