Photopolymer: synthesis and characterization of poly(4-methacryloyloxyphenyl-4 ' chlorostyryl ketone)

Methacrylate monomer containing a photodimerizable alpha,beta-unsaturated k etone moiety was prepared and polymerized in ethyl methyl ketone at 70 degr ees C using benzoyl peroxide as an initiator. The polymer was characterized by UV, IR, H-1 NMR and C-13 NMR spectra. The molecular weights ((M) over b ar(w) and (M) over bar(n)) of the polymer were determined by gel permeation chromotography. The thermal stability of the polymer was measured by therm ogravimetric analysis in air and nitrogen. The glass transition temperature of the polymer was determined by differential scanning calorimetry. The ph oto reactivity of the polymer was investigated as thin film and in solution . (C) 2000 Society of Chemical Industry.