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Nanocomposite Membranes Based on Sulfonated Poly(etheretherketone) Structured with Modified Silica for Direct Ethanol Fuel Cell
Author(s) -
Tan Ai Ren,
de Carvalho Luisa Magno,
de Ramos Filho Florêncio Gomes,
de Souza Gomes Ailton
Publication year - 2006
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200651367
Subject(s) - phosphotungstic acid , nanocomposite , membrane , materials science , chemical engineering , conductivity , polymer , ether , polymer chemistry , fuel cells , ethanol , permeability (electromagnetism) , chemistry , composite material , organic chemistry , catalysis , biochemistry , engineering
Polymer blend of sulfonated poly(oxy‐1,4phenyleneoxy‐1,4phenylenecarbonyl‐1,4phenylene) (SPEEK) and poly(ether sulfone) (PES) was compounded with commercial and synthesized silica. PES phase had important role to improve the stability and to reduce permeability of sulfonated matrix to alcohol solution, but it also reduced the proton conductivity of membrane. The addition of synthesized silica, which had heteropolyacid phosphotungstic acid (HPW) occluded inside the silica matrix (SiO 2 · HPW) was evaluated to improve the conductivity.