Properties of interpenetrating polymer network hydrogels composed of poly(vinyl alcohol) and poly(N-isopropylacrylamide)

Properties of interpenetrating polymer network hydrogels composed of poly(vinyl alcohol) and poly(N-isopropylacrylamide)

Interpenetrating polymer network (IPN) hydrogels based on poly(vinyl alcohol) and poly(N‐isopropylacrylamide) were prepared by the sequential‐IPN method. The IPN hydrogels were analyzed for sorption behavior of water at 35°C and at a relative humidity of 95% using a dynamic vapor sorption system, an...

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Veröffentlicht in:Journal of applied polymer science 2003-08, Vol.89 (8), p.2041-2045
Hauptverfasser: Kim, Seon Jeong, Park, Sang Jun, Chung, Taek Dong, An, Kay Hyeok, Kim, Sun I.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
poly(N-isopropylacrylamide)
poly(vinyl alcohol)
Properties and characterization
Solution and gel properties
water behavior
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Zusammenfassung:Interpenetrating polymer network (IPN) hydrogels based on poly(vinyl alcohol) and poly(N‐isopropylacrylamide) were prepared by the sequential‐IPN method. The IPN hydrogels were analyzed for sorption behavior of water at 35°C and at a relative humidity of 95% using a dynamic vapor sorption system, and water diffusion coefficients were calculated. Differential scanning calorimetry was used for the quantitative determination of the amounts of freezing and nonfreezing water. Free water contents in the IPN hydrogel of IPN1, IPN2, and IPN3 were 45.8, 37.9 and 33.1% in pure water, respectively. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 89: 2041–2045, 2003
ISSN:0021-8995
1097-4628
DOI:10.1002/app.12471