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Proton conducting materials based on thermoplastic elastomers silica composites
Author(s) -
Acosta J. L.,
González L.,
Ojeda M. C.,
Del Río C.
Publication year - 2003
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.12926
Subject(s) - materials science , composite material , elastomer , polymer , thermoplastic elastomer , fourier transform infrared spectroscopy , thermoplastic , polymer chemistry , copolymer , chemical engineering , engineering
In this research, ionomeric composites based on organophilized silica (SIL) and a thermoplastic elastomer (HSBR), were prepared and characterized from a microstructural and electrical point of view. DSC was used to confirm silica sulfonation and FTIR to characterize the polymer before and after sulfonation reaction. DSC and DMA analysis show that T g HPB remains constant in all the samples studied. T g PS measured through DMA presents an increase of about 40°C in the sample containing both the sulfonated filler and the sulfonated polymer matrix. The resulting materials can be easily processed to yield thin films (thickness 0.2–0.4 mm) with outstanding proton conducting properties (10 −2 S · cm −1 ). The suitability for film formation and good electrical properties is indicative of their potential use as electrolytes in polymer fuel cells. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 2715–2720, 2003