The 1-decene was polymerized over metallocene catalytic system of rac-Et(1-Ind)2ZrCl2/C6H5NH(CH3)2B(C6H5)4/ Al(i-Bu)3

and the kinetics under various reaction conditions such as temperature and molar ratio of aluminum to zirconium was investigated. In order to obtain dynamic data for monitoring the reaction process

samples taken at different time were analyzed on monomer concentration by gas chromatograph (GC)

and that on molecular weight of polymer by gel permeation chromatography (GPC). Based on the polymerization reaction mechanism and material balance

and the hypotheses for alkene polymerization

the kinetic model of the polymerization was established. The model includes the reactions of chain initiation

chain propaganda

chain transfer to monomer

chain transfer to active center and chain termination. Levenberg-Marquardt algorithm was used to optimize the model parameters. Through the model

the reaction rate

number-average and weight-average molecular weights and so on can be predicted. By the validation experiments it showed that the values of model prediction are very close to the experimental data. The model prediction showed that the chain initiation reaction process was completed in a few seconds

the chain propagation reaction has lower activation energy than the chain transfer reaction

and higher temperature is beneficial to the chain transfer reaction.