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Functional Polyolefins: Poly(ethylene)-graft-Poly(tert-butyl acrylate) via Atom Transfer Radical Polymerization From a Polybrominated Alkane

✍ Scribed by Guangjuan Xu; Dongren Wang; Michael R. Buchmeiser

Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 579 KB
Volume: 33
Category: Article
ISSN: 1022-1336
DOI: 10.1002/marc.201100521

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✦ Synopsis

Abstract

Poly(__cis‐__cyclooctene) is synthesized via ring‐opening metathesis polymerization in the presence of a chain‐transfer agent and quantitatively hydrobrominated. Subsequent graft polymerization of tert‐butyl acrylate (__t__BA) via Cu‐catalyzed atom transfer radical polymerization (ATRP) from the non‐activated secondary alkyl bromide moieties finally results in PE‐g‐P__t__BA copolymer brushes. By varying the reaction conditions, a series of well‐defined graft copolymers with different graft densities and graft lengths are prepared. The maximum extent of grafting in terms of bromoalkyl groups involved is approximately 80 mol%. DSC measurements on the obtained graft copolymers reveal a decrease in T~m~ with increasing grafting density.

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