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Water soluble hyperbranched polymers from controlled radical homopolymerization of PEG diacrylate

  • Tianyu Zhao
  • , Hong Zhang
  • , Dezhong Zhou
  • , Yongsheng Gao
  • , Yixiao Dong
  • , Udo Greiser
  • , Hongyun Tai
  • , Wenxin Wang
  • University College Dublin
  • Stanford University
  • Bangor University

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

A series of water soluble PEG based hyperbranched polymers were successfully synthesized by homopolymerization of poly(ethylene glycol) diacrylate (PEGDA) (Mn = 575 and 700 g mol-1 respectively) via vinyl oligomer combination. The homopolymerization of diacrylate macromers underwent a slow vinyl propagation combined with a polycondensation by coupling of reactive oligomers. At a high initiator-to-monomer ratio (e.g. 1 : 2), high monomer conversions up to 96% were achieved in concentrated reaction conditions (60% w/v) without gelation. The hyperbranched polymers obtained from homopolymerization of PEGDA575 show concentration-dependent thermoresponsive properties in aqueous solutions.

Original languageEnglish
Pages (from-to)33823-33830
Number of pages8
JournalRSC Advances
Volume5
Issue number43
DOIs
StatePublished - 2015
Externally publishedYes

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