Overcoming the “Upper Bound” in Polymeric Gas‐Separation Membranes | Zendy

Seo Yongsok | Zendy; Hong Seong Uk | Zendy; Lee BonSoo | Zendy

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Overcoming the “Upper Bound” in Polymeric Gas‐Separation Membranes

Author(s) -

Seo Yongsok,

Hong Seong Uk,

Lee BonSoo

Publication year - 2003

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.200390301

Subject(s) - thermotropic crystal , imide , selectivity , gas separation , materials science , composite number , polymer , ether , membrane , polymer chemistry , chemical engineering , polymer science , composite material , organic chemistry , liquid crystalline , chemistry , catalysis , biochemistry , engineering

Liquid crystals to the rescue : A remarkably increased selectivity for the separation of a binary gas pair (O 2 /N 2 ) by a composite polymer film is reported. The composite film is made of a thermotropic liquid‐crystalline polymer dispersed in a poly(ether imide) and a compatibilizer (poly(ester imide)). The limit imposed by what was previously considered to be an upper bound is overcome (see graph; ◊ the new composite film; the other symbols are values that were obtained for other films; α =selectivity).

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