Hydrogels from 2-Acrylamido-2-methyl-1-propanesulfonic acid as p(AMSP)  were prepared by redox polymerization using N,N'-methylenebis(acrylamide) as crosslinker at the temperature range of -22 and 25 �C. Highly porous cryogel with fast swelling and deswelling characteristic were obtained. It was demonstrated that the prepared hydrogels' elasticity, swelling or deswelling rates, and pore size greatly depends on the preparation temperature. Moreover, the swollen hydrogels prepared at low temperatures illustrated strong mechanically stability upon compression whereas the regularly prepared hydrogels at room temperature readily fractured even under low compression. Furthermore, Various hydrogels based on different preparation conditions at different temperature with different crosslinkers and different  homo and co-monomers such as acrylamide, 2-hydroxyethyl methacrylate, n-vinylpyrrolidone and (3-acrylamidopropyl) trimethylammonium chloride were prepared and their fast swelling kinetic were investigated. The potential applications of cryogels in environment and catalysis were also investigated.

Macroporous cryogels syntheses and characterizations

245th National Meeting (2013)

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