Determinants of Swelling Behaviour of Methacrylamide and Cellulosics Based Hydrogels

摘要

The synthesis and swelling response of some novel hydrogels in different swelling media have been studied for some specialty applications.Hydroxypropylcellulose based networks with methacrylamide by simultaneous gamma ray initation.Reaction conditions such as total dose of radiation,amount of water and concentrations of monomer and crosslinker have been evaluated for optimu network yield.Employing these conditions,networks of cellulose and its other derivatives have also been synthesised with methacrylamide.Resulting networks have been characterised for structureal aspects by elemental analysis,FTIR and scanning electron micrography.The swelling behaviour of networks has been studied as a function of the synthetic reaction conditions,the nature of polymeric backbones and the nature of the swelling medium (water,0.5M NaOH,0.5MHCl and 5.0%NaCl).The equilibrium sweilling is a function of both structural and environmental factors as hydrogels respond smartly to the environment.