Copolymerization of N-acryloyl P-amino benzoate with some vinyl monomers

Nacryloyl P. Aminobenzoate [NAPAB] monomer was prepared from ethylester of p.aminobenzoic acid and acryloyl chloride in the presence of triethylamine in dry benzene at 0 degree. This monomer [NAPAB] was copolymerized with styrene [St], methyl methacrylate [MMA] and ethyl acrylate [EA] by solution polymerization technique in the presence of azobisisobutyronitrile [AIBN] as initiator in sealed tube under nitrogen atmosphere at 60-63 degree. The Kelen-Tudos and Fineman-Ross methods were used to determine the copolymerization parameters of NAPAB [Ml] with each of St, MMA and EA [M2] monomers. It was found that, the reactivity ratios r[1] and r[2] for NAPAB-St, NAPAB-MMA and NAPAB-EA are equal to 0.802 : 0.144, 0.59 : 0.34 and 0.25 : 0.54 respectively. The Alfrey Price [Q] and [e] values were calculated for the three monomers to complete the comparison. Also infrared spectroscopic studies for the prepared homo-and copolymers were investigated