Anisotropic stressed radiation induced synthesis of N-Isopropylacrylamide gel: Effect on swelling extent and types of waters

Abstract

Thermosensitive poly (N-Isopropylacrylamide) gels were prepared by simultaneous polymerization and crosslinking of monomer using high energy gamma radiation at room temperature and at temperatures well below the LCST of N-Isopropylacrylamide. It was observed that at very low temperature (−78°C) only there is significant effect on equilibrium water uptake that too at significantly high dose. The mechanical properties of the gels also depend on the dose and synthesis temperature. But the temperature effect gets nullified as the absorbed dose increases.