Citation: XU Linyun, Wang Lei. GROUP TRANSFER POLYMERIZATION OF ETHYL ACRYLATE WITH LEWIS ACID CATALYST[J]. Chinese Journal of Polymer Science, ;1989, 7(4): 299-305. shu

GROUP TRANSFER POLYMERIZATION OF ETHYL ACRYLATE WITH LEWIS ACID CATALYST

XU Linyun ,
Wang Lei

Received Date: 7 April 1988

This paper reports the kinetics of group transfer polymerization (GTP)of ethyl acrylate (EA)with zinc iodide catalyst in 1,2-dichloroethane using dimethyl ketene methyl trimethylsilyl acetal (MTS) as initiator at 0℃ and above 0℃. The amount of catalyst used was studied. When zinc iodide catalyst used is more than 10mol% relative to monomer, the rate of polymerization is proportional to the concentration of monomer, whereas zinc iodide catalyst used is less than 10 mol% of the monomer, the rate of polymerization is independent of the monomer concentration.In the GTP of EA an induction period was observed when the zinc iodide contents are less than 10mol%.If the reaction temperature is over 0℃,living species become unstable and diminish,leading to incomplete weight distributions which are not changed as decreasing zinc iodide contents.The polydispersity is about 1.2.
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