Estimation of reactivity ratios ofN‐methacryloloxyphthalimide copolymers by1H NMR

摘要

AbstractCopolymerization ofN‐methacryloyloxyphthalimide (NMP) with methyl acrylate (MA), methyl methacrylate (MMA), and acrylonitrile (AN) was carried out in dimethylformamide using azobisisobutyronitrile (AIBN) as an initiator at 60°C. The estimation of the copolymer compositions were carried by1H nuclear magnetic resonance (NMR) spectroscopy. The monomer reactivity ratios for NMP‐MA, NMP‐MMA, and NMP‐AN systems were found to ber1= 1.223,r2= 0.208,r1= 1.441,r2= 0.704,r1= 1.496 andr2= 0.228, respectively, by Kelen–Tüdős method. Also, theQandevalues for NMP monomer was found to beQ= 0.90 ande= 0.01,