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Synthesis of Heterobifunctional Hyperbranched Polyethylenes Tethered with Dual Acryloyl and 2-Bromoisobutyryl Functionalities via One-Pot Chain-Walking Terpolymerization

✍ Scribed by Yuanqing Xu; Patrick Campeau; Zhibin Ye

Book ID
102484232
Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
413 KB
Volume
212
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

A one‐step synthesis of heterobifunctional hyperbranched polyethylenes covalently tethered with dual acryloyl and 2‐bromoisobutyryl functionalities at controllable contents is reported. It is achieved in one pot by chain‐walking terpolymerization of ethylene with two functional acrylate comonomers, 1,6‐hexanediol diacrylate and 2‐(2‐bromoisobutyryloxy) ethyl acrylate. The unique chain‐walking mechanism renders the hyperbranched polymer chain topology and its remarkable capability in incorporating acrylate comonomers enables the incorporation of both comonomers to give two valuable functionalities. The two comonomers exhibit nearly equal vinyl reactivity and are incorporated independently in the terpolymerization with their molar contents controlled by adjusting the comonomer feed concentrations. magnified image

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