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Block copolymers comprising poly(ethylene oxide) and poly(hydroxyethyl methacrylate) blocks: synthesis and characterization

Authors :
Helmut Keul
Hartwig Höcker
Birte Reining
Source :
Polymer. 43:3139-3145
Publication Year :
2002
Publisher :
Elsevier BV, 2002.

Abstract

Monofunctional poly(ethylene oxide) macroinitiators with a molecular weight of 2000, 5000, 10 000, 20 000 and bifunctional poly(ethylene oxide) macroinitiators with a molecular weight of 20 000 were used for the atom transfer radical polymerisation (ATRP) of hydroxyethyl methacrylate (HEMA) in ethylene glycol as a solvent. The polymerisation proceeds in a controlled way up to high conversions. The molecular weight of the obtained copolymers increases linearly with conversion. A high rate of polymerisation was observed for the ATRP of HEMA. The effect of the poly(ethylene oxide) moiety on the course of the reaction is limited to solvating effects. The surface analysis of poly(ethylene oxide)/poly(hydroxyethyl methacrylate) block copolymers by means of atomic force microscopy in tapping mode using phase imaging shows phase separated domains with characteristic features related to the volume fraction of the respective blocks.

Details

ISSN :
00323861
Volume :
43
Database :
OpenAIRE
Journal :
Polymer
Accession number :
edsair.doi...........2e0ad5860a8229fa384594a5b71067b2
Full Text :
https://doi.org/10.1016/s0032-3861(02)00130-1