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Sulfonation and characterization of styrene-indene copolymers for the development of proton conducting polymer membranes

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Sulfonation and characterization of styrene-indene copolymers for the development of proton conducting polymer membranes

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Título Sulfonation and characterization of styrene-indene copolymers for the development of proton conducting polymer membranes
Autor Becker, Cristiane Miotto
Biagini, Amanda Bertolo
Forte, Maria Madalena de Camargo
Amico, Sandro Campos
Vargas, José Viriato Coelho
Azambuja, Denise Schermann
Abstract The aim of this work is to obtain polymer precursors based on styrene copolymers with distinct degrees of sulfonation, as an alternative material for fuel cell membranes. Acetyl sulfate was used to carry out the sulfonation and the performance of the polyelectrolyte was evaluated based on the content of acid polar groups incorporated into the macromolecular chain. Polymeric films were produced by blending the sulfonated styrene-indene copolymer with poly(vinylidene fluoride). The degree of sulfonation of the polymer was strongly affected by the sulfonation reaction parameters, with a direct impact on the ionic exchange capacity and the ionic conductivity of the sulfonated polymers and the membranes obtained from them. The films produced with the blends showed more suitable mechanical properties, although the conductivity of the membranes was still lower than that of commercially available membranes used in fuel cells.
Contido em Polímeros: ciência e tecnologia. São Carlos. vol. 22, n. 4 (out./dez. 2012), p. 395-400
Assunto Blendas
Copolímeros
Engenharia de materiais
Estireno
[en] Blends
[en] Fuel cells
[en] Styrene-indene
[en] Sulfonation
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/75741
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