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Permeability of PEEK to carbon dioxide
Author(s) -
De Candia F.,
Vittoria V.
Publication year - 1994
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.1994.070511301
Subject(s) - peek , sorption , ether , amorphous solid , materials science , carbon dioxide , diffusion , permeability (electromagnetism) , polymer chemistry , polymer , chemical engineering , activation energy , organic chemistry , composite material , chemistry , thermodynamics , membrane , physics , biochemistry , adsorption , engineering
Sorption and diffusion of carbon dioxide were measured in amorphous and crystalline poly(aryl‐ether‐ether‐ketone) or PEEK, at different temperatures. The sorption follows Henry's law at all the investigated temperatures, and the reduction of sorption in the crystalline sample corresponds to the reduction of the amorphous phase as derived from X‐rays. Due to a more tortuous path, the diffusion parameter in the crystalline sample is lower than in the amorphous one, whereas the activation energy of the diffusion process is similar for both the samples. The permeability to carbon dioxide was very low, comparable, or lower than other rigid polymers. © 1994 John Wiley & Sons, Inc.