Effect of NH3 gas on the electrical conductivity of polyaniline blend films

被引：165

作者：

Matsuguchi, M ^{[1
]}

Io, J ^{[1
]}

Sugiyama, G ^{[1
]}

Sakai, Y ^{[1
]}

机构：

[1] Ehime Univ, Fac Engn, Dept Appl Chem, Matsuyama, Ehime 7908577, Japan

来源：

SYNTHETIC METALS | 2002年 / 128卷 / 01期

关键词：

NH3 gas sensor; polyaniline blends;

D O I：

10.1016/S0379-6779(01)00504-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of NH3 gas on the electrical conductivity of four kinds of polyaniline-insulating matrix polymer blend films was investigated for the purpose of preparing a practical NH3 gas sensor operable near or at room temperature. The electrical conductivity of all blend films measured in N-2 was enhanced above a 2 wt.% of composition of polyaniline, The electrical conductivity decreased by exposure of the blend films to NH3 gas. It was found that the sensing characteristics depended on the kind of dopant species, measuring temperature, matrix polymers, and the solvent used for film preparation. Among the considered sensors, the polyaniline-poly(methyl methacrylate) blend film prepared with toluene as the solvent showed the fastest response and good reversibility, because the porous film was obtained only by this combination. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：15 / 19

页数：5

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