Gamma radiation synthesis of rapid swelling superporous polyacrylamide hydrogels |
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Authors: | Sanju Francis D Mitra BR Dhanawade Lalit Varshney Sunil Sabharwal |
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Institution: | aRadiation Technology Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India |
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Abstract: | In this report a simple route for gamma radiation induced synthesis of superporous hydrogel (SPH) is described. Conventional SPH synthesis requires foaming and cross-linking reactions to take place simultaneously. However, in radiation synthesis it is difficult to introduce foaming during the cross-linking reactions. In order to overcome this limitation, the foaming and radiation cross-linking reactions were decoupled and carried out in two stages. The polyacrylamide SPH synthesized by this approach has very fast swelling kinetics compared to the non-porous hydrogel. |
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Keywords: | Gamma radiation Polyacrylamide Carrageenan Superporous hydrogels |
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