Synthesis and characterization of copolymers with a photosensitive group

Copolymers of 4-acryloyloxyphenyl-4′-methoxy styryl ketone with glycidyl methacrylate were prepared in methyl ethyl ketone solution using benzoyl peroxide as initiator at 70°C. All the copolymers were characterized by UV, IR, 1H-and 13C-NMR spectra. Their compositions were determined by 1H-NMR technique. The reactivity ratio of the monomers were determined by the application of the conventional linearization methods suggested by Fineman–Ross and Kelen–Tüdös. The weight and number average molecular weights of the copolymers were determined by gel permeation chromatography. Thermogravimetric analysis of the copolymers was carried out in air. The glass transition temperature, Tg, of the polymers were determined by differential scanning calorimeter. The photocrosslinking properties of the copolymers were discussed.