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Permeation of CO 2 through polyurethane
Author(s) -
Xiao H.,
Ping Z. H.,
Xie J. W.,
Yu T. Y.
Publication year - 1990
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1990.070400705
Subject(s) - activation energy , annealing (glass) , permeation , polyurethane , arrhenius equation , permeability (electromagnetism) , materials science , thermodynamics , atmospheric temperature range , chemistry , composite material , polymer chemistry , physics , membrane , biochemistry
The permeability of CO 2 through polyurethane was investigated. It is found that the permeability increases with the decrease of hard segment content and the increase of soft segment length; however, no change of activation energy is involved. The permeability increases with the elevation of annealing temperature. The temperature dependence of permeability observes the Arrhenius equation at temperatures below 60–80°C, but it deviates at temperatures above this range. This deviation would be attributed to the increase of mixing of hard and soft segments as a result of the dissociation of short‐range order in hard segment domains.