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Polymer structure and gas permeation. I. Thermodynamic interpretation of permeation
Author(s) -
Roberts R. W.,
Kammermeyer Karl
Publication year - 1963
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.1963.070070617
Subject(s) - permeation , crystallinity , crystallization , materials science , polymer , polyethylene , thermodynamics , crystallization of polymers , membrane , permeability (electromagnetism) , entropy (arrow of time) , chemical engineering , polymer chemistry , chemistry , composite material , physics , engineering , biochemistry
A thermodynamic interpretation of the permeation process of gas transport through polymeric membranes is proposed. The mechanism used does not require the usual P = DS relationship. The dependence of gas permeability upon the crystallinity, strain, etc. is presented, and a method for obtaining values for the entropy of crystallization is suggested. Literature data have been correlated by this approach and values for the entropy of crystallization of polyethylene, polyethylene terephthalate, and nylon 610 were derived.