Effect of LiCl on conductivity of polyaniline synthesized via in-situ chemical oxidative method

被引：20
|
作者：
Dominic, J. [1 ]
David, T. [2 ]
Vanaja, A. [2 ]
Kumar, K. K. Satheesh [1 ]
机构：
[1] Deemed Univ, Gandhigram Rural Inst, Dept Chem, Dindigul 624302, Tamil Nadu, India
[2] CSIR, Natl Aerosp Labs, Ctr Societal Mission & Special Technol, Bangalore 560017, Karnataka, India
来源：
EUROPEAN POLYMER JOURNAL | 2016年 / 85卷
关键词：
Polyaniline; Lithium chloride; Dopant; Chemical oxidative method; Conductivity; Co-dopant; POLYMERIZATION; CHLORIDE; ANILINE;
D O I：
10.1016/j.eurpolymj.2016.10.028
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
An in-situ chemical oxidative method has been exploited for the synthesis of polyaniline (PANI) using HCl as a dopant, LiCI as a co-dopant and ammonium persulfate (APS) as an oxidizing agent at room temperature. The monomer to oxidant ratio has been optimized as 1:1.125 and the concentration of LiCI was varied from 0.0625 to 3 M. The synthesized polymer (PANI-LiCl) was characterized by Fourier transform infrared (FTIR) spectroscopy, Ultraviolet-Visible (UV-Vis) spectroscopy, X-ray diffraction (XRD) studies, Scanning Electron Microscopy (SEM) X-ray Photoelectron Spectroscopy (XPS) and Electrical conductivity measurements. The thermal properties of the synthesized PANI-LiCl have been characterized by Differential Scanning Colorimetry (DSC). The conductivity of the synthesized PANI-LiCI increases with the increasing concentration of LiCl from 0.0625 to 2.5 M. Further increase of LiCI concentration (3 M) drastically decreased the conductivity of PANI due to the saturation or over oxidation. The maximum electrical conductivity of 25.01 S cm(-1) was realized for 2.5 M LiCI doped PANI. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：236 / 243
页数：8
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