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Thermoresponsive Behavior of Mixtures of Epoxy Functionalized Oligo(ethylene glycol) Methacrylate Copolymers

✍ Scribed by Rodrigo París; Marta Liras; Isabel Quijada-Garrido

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
688 KB
Volume
212
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Thermoresponsive random copolymers based on 2‐(2‐methoxyethoxy)ethyl methacrylate (MEO~2~MA) and oligo(ethylene glycol) methyl ether methacrylate (OEG~8‐9~MA) are synthesized by atom transfer radical polymerization (ATRP). In a second step, they are used as macroinitiators for the ATRP of glycidyl methacrylate (GMA), introducing a short end‐block with epoxy functionalities that allows the connection of the thermoresponsive polymers to a variety of molecules, surfaces, or particles. The resulting epoxy functionalized terpolymers exhibit lower critical solution temperatures (LCST), which can be adjusted by changing the feed monomer ratio of MEO~2~MA and OEG~8‐9~MA. Binary blends show one or two cloud points depending on the blend composition. A model for the polymer collapse in one mixed particle or in two different particles as function of composition is proposed. magnified image

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