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Study on the Chemical and Radiation Crosslinking of Poly(vinyl alcohol) Hydrogels for an Improvement of Heat Resistance  

Park, Kyoung-Ran (Radiation Application Division, Korea Atomic Energy Research Institute)
Nho, Young-Chang (Radiation Application Division, Korea Atomic Energy Research Institute)
Publication Information
Polymer(Korea) / v.29, no.1, 2005 , pp. 91-95 More about this Journal
Abstract
The PVA hydrogels were prepared by the chemical and irradiation method to improve the heat resistance of these hydrogels at the high temperature. The physical properties such as the gel content, the degree of swelling and the gel strength for the synthesized hydrogels were examined. Gel content increased as the chemical reaction time and the irradiation dose increased, and gel content of the hydrogels were higher when the two-steps of chemical and irradiation method were used rather than only the chemical method. Gel strength increased as the chemical reaction time increased, and as the irradiation dose decreased. The hydrogels prepared by the chemical reaction for 5 hours and the two-steps had the heat resistance at the high temperature.
Keywords
poly(vinyl alcohol); radiation; chemical crosslinking; heat resistance;
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