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New Block Copolymers with Poly(N,N-dimethylaminoethyl methacrylate) as a Double Stimuli-Responsive Block

✍ Scribed by Felix Schacher; Markus Müllner; Holger Schmalz; Axel H. E. Müller

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
371 KB
Volume
210
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

The synthesis of several diblock copolymers with DMAEMA via anionic polymerization is presented; PS__‐b‐PDMAEMA, PB‐b‐__PDMAEMA, poly(p‐__tert‐butoxystyrene)‐b‐PDMAEMA, and PEO‐b‐PDMAEMA. The latter was synthesized using sec‐butyllithium as initiator in presence of the phosphazene base t‐BuP~4~, enabling a facile changeover from an oxyanion to a carbanion. All reactions resulted in narrowly distributed block copolymers (PDI < 1.1). For PEO‐b‐__PDMAEMA, diblock copolymers with a high blocking efficiency and a near‐narrow molecular weight distribution (PDI < 1.40) could be prepared. The advantage of the presented one‐pot synthesis is a significant higher blocking efficiency compared to commercially available PEO macroinitiators under similar conditions.

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