The graft copolymerization of vinyl monomers onto chitosan film by using ferric ion (FeCl_3 . 6H_2O) or benzophenone(BP) as a photosensitizer was carried out under ultraviolet (UV) irradiation.
The grafted copolymer was identified by using IR spectro...
The graft copolymerization of vinyl monomers onto chitosan film by using ferric ion (FeCl_3 . 6H_2O) or benzophenone(BP) as a photosensitizer was carried out under ultraviolet (UV) irradiation.
The grafted copolymer was identified by using IR spectroscopy and scanning electron Microscope. The effects of various polymerization parameters involving monomer concentration, photosensitizer concentration, polymerization time and polymerization temperature were investigated.
As monomer concentration and photosensitizer concentration were increased, the percent grafting was increased up to limiting value. And also the percent grafting was found to increase by increasing the polymerization time and temperature.