From an epoxide monomer toolkit to functional PEG copolymers with adjustable LCST behavior

Christine Mangold, Boris Obermeier, Frederik Wurm, Holger Frey*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

36 Citations (Scopus)

Abstract

The lower critical solution temperature (LCST) behavior of novel poly(ethylene glycol) (PEG)-based copolymers bearing multiple functional groups, obtained by anionic ring-opening (co)polymerization (AROP), has been investigated. Variable comonomer ratios of ethylene oxide (EO) and the corresponding oxiranes isopropylidene glyceryl glycidyl ether (IGG), ethoxyl vinyl glycidyl ether (EVGE), allyl glycidyl ether (AGE), or N,N-dibenzyl amino glycidyl (DBAG), particularly designed to implement functional groups at the PEG backbone, were found to influence the LCST behavior. Sharp transitions from translucent to opaque solutions, comparable to other well-established stimuli-responsive polymers, were observed at temperatures ranging from 9 to 82 °C. The influence of the side group hydrophobicity could be quantified by the comparison of the different copolymer systems observed.

Original languageEnglish
Pages (from-to)1930-1934
Number of pages5
JournalMacromolecular rapid communications
Volume32
Issue number23
DOIs
Publication statusPublished - 1 Dec 2011
Externally publishedYes

Keywords

  • copolymers
  • LCST
  • PEG
  • polyethers
  • stimuli-sensitive

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