Copolymers of furfuryl methacrylate ( F) and N,N-dimethyl acrylamide ( A) were prepared by free radical photoinitiated polymerisation in bulk at 40°C, using 2,2-azobisisobutyronitrile (AIBN) as photoinitiator. The reactivity ratios of both monomers ( r F and r A) were determined according to the general copolymer composition equation by applying the Tidwell and Mortimer non-linear least squares fit. To this end initial approximated values of r F and r A were obtained by means of the Fineman-Ross and Kelen-Tüdos linearisation methods. The reactivity ratios obtained were r F = 2.06 and r A = 0.28. Also, kinetic parameters such as reaction rate ( R p) and copolymerisation quantum yield ( φ m) were determined for the above system over a wide composition interval, with molar fraction of F ranging from 0.1 to 0.9 in the monomer feed. The kinetics of photopolymerisation were followed using differential scanning photocalorimetry.