Techniques for measurement of water vapor sorption and permeation in polymer films

• Published in: Journal of applied polymer science Vol. 61; no. 11; pp. 1865 - 1876
• Main Authors: Schult, K. A., Paul, D. R.
• Format: Journal Article
• Language: English
• Published: New York Wiley Subscription Services, Inc., A Wiley Company 12-09-1996; Wiley
• Subjects: Applied sciences; Exact sciences and technology; Miscellaneous; Organic polymers; Physicochemistry of polymers; Properties and characterization; Ethersulfone copolymer; Steam permeability; Testing equipment; Aromatic copolymer; Polymer; Water absorption; Correction factor; Kinetics; Error correction; Measurement method; Experimental study
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/(SICI)1097-4628(19960912)61:11<1865::AID-APP2>3.0.CO;2-H

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.