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Proton‐exchange membranes by radiation grafting of styrene onto FEP films. II. Mechanism of thermal degradation in copolymer membranes
Author(s) -
Gupta B.,
Highfield J. G.,
Scherer G. G.
Publication year - 1994
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.1994.070510916
Subject(s) - copolymer , membrane , thermogravimetry , styrene , polystyrene , materials science , polymer chemistry , grafting , chemical engineering , degradation (telecommunications) , inert gas , fourier transform infrared spectroscopy , atmospheric temperature range , chemistry , polymer , composite material , telecommunications , biochemistry , physics , meteorology , computer science , engineering
The thermal degradation of radiation‐grafted and sulfonated FEP‐ g ‐polystyrene membrane has been investigated in the temperature range 50–650°C in an inert gas atmosphere by thermogravimetry. The evolved gaseous products were analyzed by FTIR in combination with mass spectrometry to correlate weight losses at different temperatures with molecular composition of the copolymer membrane. On the basis of these results, a simple degradation model has been established. © 1994 John Wiley & Sons, Inc.