Monte Carlo simulation is applied, with a high effectiveness and versatility, to the studies on the kinetics and chain length distribution in radical polymerization with RAFT process. The results show that the molecul...Monte Carlo simulation is applied, with a high effectiveness and versatility, to the studies on the kinetics and chain length distribution in radical polymerization with RAFT process. The results show that the molecular weight the resulting polymers increase linearly with monomer conversion, and the polydispersity is lower than 1.1, a typical feature of living polymerization. The simulation results are in consistent with the experimental results in literature. Additionally, that the molecular weight is proportional to the initial concentration of dithioester, [DSE]0, and the polymerization rate is [DSE]0-independent, could be of great help for controlling molecular weight in experiment.展开更多
A new effecient catalyst system(FeCl 3/2PPh 3) for the “living”/controlled radical polymerization of butyl methacrylate by a reverse ATRP process was reported in this paper.With the presence of this catalyst system,...A new effecient catalyst system(FeCl 3/2PPh 3) for the “living”/controlled radical polymerization of butyl methacrylate by a reverse ATRP process was reported in this paper.With the presence of this catalyst system,the number average molecular weights of the obtained polymer increased in direct proportion with monomer conversion,and the MWDs (molecular weight disctributions) were narrow throughout the reactions(1 17< w/ n<1 22).This reaction system did not include the conventional initiators which were used to generate the primary radicals.展开更多
文摘Monte Carlo simulation is applied, with a high effectiveness and versatility, to the studies on the kinetics and chain length distribution in radical polymerization with RAFT process. The results show that the molecular weight the resulting polymers increase linearly with monomer conversion, and the polydispersity is lower than 1.1, a typical feature of living polymerization. The simulation results are in consistent with the experimental results in literature. Additionally, that the molecular weight is proportional to the initial concentration of dithioester, [DSE]0, and the polymerization rate is [DSE]0-independent, could be of great help for controlling molecular weight in experiment.
文摘A new effecient catalyst system(FeCl 3/2PPh 3) for the “living”/controlled radical polymerization of butyl methacrylate by a reverse ATRP process was reported in this paper.With the presence of this catalyst system,the number average molecular weights of the obtained polymer increased in direct proportion with monomer conversion,and the MWDs (molecular weight disctributions) were narrow throughout the reactions(1 17< w/ n<1 22).This reaction system did not include the conventional initiators which were used to generate the primary radicals.
