Abstract
Cationic polyisoprene characteristic of different molecular parameters can be obtained with high yields in the presence of the TiCl4-trichloroacetic acid catalyst system. At low monomer concentrations, polyisoprene has a unimodal molecular-mass distribution. At elevated monomer concentrations, the polydispersity of polyisoprene increases significantly with conversion because of chain transfer to the polymer and branching. As the TiCl4/trichloroacetic acid ratio in the catalyst and the total concentration of the catalytic complex increase, the average molecular masses of the produced cationic polyisoprene decrease as a result of chain transfer to trichloroacetic acid.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © V.A. Rozentsvet, V.G. Kozlov, E.F. Ziganshina, N.P. Boreiko, 2008, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2008, Vol. 50, No. 10, pp. 1771–1776
Rights and permissions
About this article
Cite this article
Rozentsvet, V.A., Kozlov, V.G., Ziganshina, E.F. et al. Cationic polymerization of isoprene in the presence of the TiCl4-trichloroacetic acid catalyst system. Polym. Sci. Ser. A 50, 1038–1044 (2008). https://doi.org/10.1134/S0965545X08100039
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0965545X08100039