CATEGORY: MEMBRANES
Journal of Membrane Science, Volume 434, 1 May
2013, Pages 137–147
Mechanically
robust thermally rearranged (TR) polymer membranes with spirobisindane for gas
separation
Shenghai Li (a), (b), Hye Jin
Jo (a), Sang Hoon Han (c), Chi Hoon Park (c), Seungju Kim (c), Peter M. Budd
(d), Young Moo Lee (a), (c)
a WCU Department of Energy Engineering, Hanyang University, Seoul 133-791,
Republic of Korea
b Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied
Chemistry, Chinese Academy of Sciences, 5625 Enmin Street, Changchun 130022,
China
c School of Chemical Engineering, College of Engineering, Hanyang University,
Seoul 133-791, Republic of Korea
d School of Chemistry, The University of Manchester, Manchester M13 9PL, UK
Abstract
Describes
innovative spirobisindane-containing thermally rearranged (TR)
benzoxazole(spiroTR-PBO) membranes which were prepared using thermal treatment
of four newly synthesized spirobisindane-containing hydroxyl-polyimides
(spiroHPIs).
Researchers studied transport properties of
spirobisindane-containing polymers. They measured fractional free volume and
density and conducted molecular simulation analysis. The resulting spiroTR-PBOs
displayed high free volumes and superior mechanical properties in terms of
elongation and tensile strength. SpiroTR-PBO membranes containing
hexafluoroisopropylidene moiety in the polymer backbone exhibited a six-fold
increase in CO2 permeability, compared to that of the spiroHPI precursor.
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