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

Authors

Wen-yar LI, Department of Chemical Engineering, Chung Cheng University, Chia-Yi 621, Taiwan, China
Chi-chang HU, Department of Chemical Engineering, Chung Cheng University, Chia-Yi 621, Taiwan, ChinaFollow

Corresponding Author

Chi-chang HU(chmhcc@ccu.edu.tw)

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 (4℃), 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 4℃, a sulfonation time of 75 minutes, and a volume of 8 mL of 30% 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.

Keywords

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

DOI Link

https://doi.org/10.61558/2993-074X.1669

Publication Date

2005-11-28

Online Available Date

2005-11-28

Revised Date

2005-10-08

Received Date

2005-06-10

Recommended Citation

Wen-yar LI, Chi-chang HU. The Optimal Sulfonation Conditions of Self-doped Polyaniline Obtained by Using Experimental Strategies[J]. Journal of Electrochemistry, 2005 , 11(4): 360-368.
DOI: 10.61558/2993-074X.1669
Available at: https://jelectrochem.xmu.edu.cn/journal/vol11/iss4/2