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电化学(中英文) ›› 2005, Vol. 11 ›› Issue (4): 360-368. 

• 研究论文 • 上一篇    下一篇

自掺杂磺酸化聚苯胺之最优化实验设计(英文)

李文亚;胡启章;   

  1. 中正大学化学工程系,中正大学化学工程系 嘉义621,嘉义,嘉义621,嘉义
  • 收稿日期:2005-11-28 修回日期:2005-11-28 出版日期:2005-11-28 发布日期:2005-11-28

The Optimal Sulfonation Conditions of Self-doped Polyaniline Obtained by Using Experimental Strategies

LI Wen-yar,HUChi-chang*   

  1. (Department of Chemical Engineering,Chung Cheng University,Chia-Yi 621,Taiwan,China
  • Received:2005-11-28 Revised:2005-11-28 Published:2005-11-28 Online:2005-11-28

摘要: 应用实验设计法包括部分析因设计与中心组合设计,优化自掺杂磺酸化聚苯胺的导电性.部分析因设计发现,需用低温(4℃)、短反应时间(1 h)和少量发烟硫酸(10 mL)等实验条件进行磺酸化反应才能得到好的导电性(ca.127 mS.cm-1);中心组合设计与确认实验表明,其最佳导电性(ca.141 mS/cm)的磺酸化条件是4℃、75 m in反应时间以及8 mL 30%的发烟硫酸.应用傅立叶变换红外光谱(FTIR)、四探针与X光光电子能谱等分析制备的材料.此外,发现磺酸化速率与程度与聚合反应时所使用的酸有关.

关键词: 自掺杂聚苯胺, 磺酸化, 导电性, 部分析因设计, 中心组合设计

Abstract: The optimal sulfonation condition of self-doped sulfonated polyaniline(prepared from leucoemeraldinebase;denoted as LEB-SPANI) with a high electronic conductivity was obtained by experimental strategies,includingthe fractional factorial design(FFD) and central composite design(CCD).From the FFD experiment,the self-doped LEB-SPANI prepared at a lowtemperature(4oC),a short reaction time(1 h),and a small volume of fumingsulfuric acid(10 mL) showed a better conductivity(ca.127 mS/cm).In the CCD study coupled with a confirmationtest,the highest conductivity(ca.141 mS/cm) of the LEB-SPANI film was obtained under a sulfonation temperatureof 4oC,a sulfonation time of75 minutes,and a volume of8 mLof30% fuming sulfuric acid.The textural cha-racter-istics of self-doped LEB-SPANI were characterized by Fourier transform infrared(FTIR) spectroscopy,four-pointprobe method,and X-ray photoelectron spectroscopy(XPS).The sulfonation rate and degree of LEB-SPANI werefound to be dependent upon the acid used in the polymerization step of PANI.

Key words: Self-doped polyaniline, Sulfonation, Conductivity, Fractional factorial design, Central composite de-sign

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