Chitosan-sodium alginate polyion complexes as fuel cell membranes

被引：284

作者：

Smitha, B ^{[1
]}

Sridhar, S ^{[1
]}

Khan, AA ^{[1
]}

机构：

[1] Indian Inst Chem Technol, Div Chem Engn, Membrane Separat Grp, Hyderabad 500007, Andhra Pradesh, India

来源：

EUROPEAN POLYMER JOURNAL | 2005年 / 41卷 / 08期

关键词：

fuel cells; polyion complex membranes; chitosan-sodium alginate blend; membrane characterization; bio-polymers;

D O I：

10.1016/j.eurpolymj.2005.02.018

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The viability of using polyion complex (PIC) membranes made by blending 84% deacetylated chitosan and sodium alginate biopolymers for direct methanol fuel cell (DMFC) was investigated. The membranes were characterized by FTIR to verify the polyion complex formation, XRD to observe the effects of blending on crystallinity, DSC and TGA to assess the thermal stability, and tensile testing for mechanical stability. Absorption studies were carried out to evaluate the interaction with water and methanol. The blend was found to be suitable for DMFC applications because of the low methanol permeability (4.6 x 10(-8) cm(2)/s at 50 vol.% methanol concentration), excellent physicomechanical properties and relatively high proton conductivity (0.042 S cm(-1)). Above all, the cost effectiveness and simple fabrication technique involved in the synthesis of such PICs make their applicability in DMFC quite attractive and cost-effective. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：1859 / 1866

页数：8

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