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Control of Domain Orientation in Block Copolymer Electrolyte Membranes at the Interface with Humid Air
Author(s) -
Park Moon Jeong,
Kim Suhan,
Minor Andrew M.,
Hexemer Alexander,
Balsara Nitash P.
Publication year - 2009
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200801613
Subject(s) - electrolyte , materials science , copolymer , membrane , perpendicular , orientation (vector space) , domain (mathematical analysis) , chemical engineering , polymer , polymer chemistry , composite material , chemistry , electrode , geometry , mathematical analysis , biochemistry , mathematics , engineering
Domain orientation in polymer electrolyte membranes is tuned by controlling its sulfonation level and the moisture content of the air. At low sulfonation levels, highly ordered hydrophobic cylinders oriented perpendicular to the film surface are obtained, when the film is in humid air. Increasing the sulfonation level results in a transition from perpendicular to parallel orientation.