Synthesis of telechelic polyacrylates with unsaturated end-groups

Autor: Robert H. Grubbs, Christopher W. Bielawski, Jagdish M. Jethmalani
Rok vydání: 2003
Předmět:
Zdroj: Polymer. 44:3721-3726
ISSN: 0032-3861
DOI: 10.1016/s0032-3861(03)00178-2
Popis: A convenient, one-pot synthesis of telechelic and semi-telechelic polyacrylates with unsaturated end-groups has been developed. Atom transfer radical polymerization of methyl or n -butyl acrylate was initiated with either ethyl α-bromomethylacrylate or methyl dichloroacetate, as a monofunctional or difunctional initiator, respectively, and mediated with various Cu/amine complexes. Addition of excess ethyl 2-bromomethylacrylate was found to not only immediately quench the polymerization but also installed 2-carbethoxyallyl moieties on the ends of the polymer chains. The telechelic polymers were found to undergo thermally or photochemically induced crosslinking reactions.
Databáze: OpenAIRE