Copolymers of 4-(4'-nitrocinnamoyl)phenyl acrylate (NCPA) and glycidyl methacrylate (GMA) were prepared in a methyl ethyl ketone solution with benzoyl peroxide as the initiator at 70degreesC. They were characterized with UV, IR, H-1-NMR, C-13-NMR, and gel permeation chromatography. Copolymer compositions were determined from H-1-NMR spectra. The monomer reactivity ratios, determined by the method of Kelen and Tudos, were r(1) (NCPA) = 1.22 and r(2) (GMA) = 0.76. The initial decomposition temperatures of the copolymers were greater than 272degreesC, as observed by thermogravimetric analysis in air. The photocrosslinking properties of the polymer films were examined.