A new model of mechanism and treatment of kinetics for styrene/N-phenylmaleimide copolymerization

作者：Shan CR; Huang ZM; Weng ZX; Pan ZR

来源：Macromolecules, 1997, 30(5): 1279-1284.

DOI：10.1021/ma9608885

The copolymerization of styrene (St, M(1)) and N-phenylmaleimide (PMI, M(2)) in chloroform using 2,2';-azobis(isobutyronitrile) as an initiator was investigated. A new kinetic model with assumption of homopolymerization and cross-propagation and diffusion-controlled termination was proposed. The reactivity ratios of free monomers and the charge-transfer complex (CTC) in the copolymerization were determined by a new method, and the values were obtained to be r(12) = 0.03370, r(21) = 0.01157, r(1C) = 0.002972, and r(2C) = 0.003379, respectively. A kinetic treatment based on the model of mechanism was used to quantitatively estimate the ratio of the CTC rate to the total copolymerization rate in the St/PMI copolymerization. It was about 33.0-55.0% in a wide range of monomer feed.

• 出版日期1997-3-10
• 单位浙江大学