Photoactive polymer has been prepared by the reaction of VOQ2OH (Q: 8-quinolyloxo ligand) with secondary cellulose acetate in dry benzene solution. The photoactive polymer produced, red-violet in color, was characterized by IR and UV-visible spectroscopy. Irradiation of this type of polymer in styrene monomer, both in bulk and in benzene solutions, produces a graft and cross-linked copolymer. This indicates that a radical is produced on the backbone of the secondary cellulose acetate molecule by the so-called intraphotoredox reaction. UV-visible spectral changes during irradiation in styrene solution suggest that the photoreaction is relatively uncomplicated with production of vanadium(IV) species. The grafted polymer was characterized by IR spectroscopy, and the percent grafting and grafting efficiency were determined and monitored as a function of the photoactive cellulose acetate concentration.