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SAXS studies on Kynar‐based membranes for fuel cells
Author(s) -
Jokela K.,
Serimaa R.,
Torkkeli M.,
Elomaa M.,
Sundholm F.,
Walsby N.,
Kallio T.,
Sundholm G.
Publication year - 2000
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889899015009
Subject(s) - small angle x ray scattering , lamellar structure , membrane , materials science , chemical engineering , ionic bonding , grafting , ionic liquid , scattering , styrene , ionomer , polymer chemistry , ion , chemistry , copolymer , organic chemistry , optics , composite material , polymer , catalysis , biochemistry , physics , engineering
The structure of the styrene grafted and sulfonated poly(vinylidenefluoride‐ co ‐hexafluoropropylene) was studied by small angle x‐ray scattering, SAXS. The starting material is lamellar and the grafting and sulfonation processes and the hexafluoropropylene, HFP, contents affected the lamellar period. The SAXS intensity curve of the sulfonated membranes also included an ionic peak which arises from the ionic aggregates. The effects of the humidy and metal ion neutralization on the ionic aggregates were studied.