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Techniques for measurement of water vapor sorption and permeation in polymer films
Author(s) -
Schult K. A.,
Paul D. R.
Publication year - 1996
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/(sici)1097-4628(19960912)61:11<1865::aid-app2>3.0.co;2-h
Subject(s) - sorption , permeation , polysulfone , polymer , water vapor , vaporization , adsorption , chemical engineering , solubility , materials science , polymer chemistry , chemistry , organic chemistry , membrane , engineering , biochemistry
The accurate measurement of water vapor sorption and permeation in polymers is complicated because water has a tendency to adsorb on high energy surfaces, a relatively high heat of vaporization, and a high solubility in most polymers. These issues and the difficulties they cause in the design of sorption and permeation equipment are reviewed. Some new approaches to circumvent these problems are described. Data for bisphenol A polysulfone films are used to illustrate these approaches. © 1996 John Wiley & Sons, Inc.