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New amorphous perfluoro polymers: perfluorodioxolane polymers for use as plastic optical fibers and gas separation membranes
Author(s) -
Okamoto Yoshiyuki,
Du Qiming,
Koike Kotaro,
Mikeš František,
Merkel Timothy C.,
He Zhenjie,
Zhang Hao,
Koike Yasuhiro
Publication year - 2016
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.3600
Subject(s) - polymer , materials science , monomer , amorphous solid , polymer chemistry , copolymer , gas separation , membrane , polymerization , methylene , chemical engineering , organic chemistry , chemistry , composite material , biochemistry , engineering
To address the need for perfluoro polymers with higher T g , we have prepared and characterized various perfluorodioxolane monomers via direct fluorination of the hydrocarbon precursors. These monomers were readily polymerized in bulk or in solution initiated by perfluorodibenzoyl peroxide. The polymers obtained have relatively high T g (~160°C) and exhibited low material dispersion. These polymers are completely amorphous and soluble in fluorinated solvents. The polymers are also chemically and thermally stable ( T g > 300°C). Thus, these perfluorodioxolane polymers may be used as plastic optical fiber material where high T g is required, such as in automobile and aircraft application. These perfluorodioxolane polymers were also investigated for use as gas separation membrane. Among these polymers, the copolymer of perfluoro (2‐methylene‐1,3‐dioxolane) and perfluoro (2‐methylene‐4,5‐dimethyl dioxolane) showed superior gas separation performance compared with the commercial perfluoro polymers for a number of gas pair, including CO 2 /CH 4 , H e /CH 4 , H 2 /CH 4 , and N 2 /CH 4 . Copyright © 2015 John Wiley & Sons, Ltd.