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Permeation of solutes through interpenetrating polymer network hydrogels composed of poly(vinyl alcohol) and poly(acrylic acid)

โœ Scribed by Heung Soo Shin; So Yeon Kim; Young Moo Lee; Kwang Hyun Lee; Seon Jeong Kim; Charles E. Rogers

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
151 KB
Volume
69
Category
Article
ISSN
0021-8995

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โœฆ Synopsis

The swelling behaviors of poly(vinyl alcohol) -poly(acrylic acid) (PVA-PAAc) interpenetrating networks (IPN) hydrogels in the presence of electrolytes were studied. The ionized carboxylic group within IPN hydrogels at pH 7 strongly interacted with electrolytes in the medium and caused anomalous swelling pattern. The permeabilities of 5 representative solutes were regulated as a function of temperature, pH, ionic strength, solute size, and ionic properties of solutes. The permeation of nonionic solutes followed the swelling behaviors dependent on external stimuli, including the above factors. However, the ionic solutes showed different trends in their permeation through IPN hydrogels.

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