Rapid synthesis and MALDI-ToF characterization of polyethylene oxide multiarm star polymers

Maria Doycheva, Elena Berger-Nicoletti, Frederik Wurm, Holger Frey*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

Abstract

Multiarm PEO star polymers with a purely aliphatic polyether structure have been synthesized using hyperbranched polyglycerol (PG) with different molecular weights as a multifunctional initiator. Different degrees of deprotonation of the initiator were studied with respect to molecular weight control. The results show that the degree of deprotonation is a crucial parameter for the synthesis of well-defined polymers with controlled molecular weights. Partial deprotonation of the PG hydroxyl groups (5-8%) was proven to represent an optimum for the synthesis of star polymers with molecular masses close to the theoretical values. Molecular weights of the stars ranged between 9 000 and 30 000 g • moi-1. MALDI-ToF spectra confirmed that the PEO arms in the star polymers possess homogeneous lengths. Biocompatible Multiarm Starpolymers. Chemical equation presented.

Original languageEnglish
Pages (from-to)35-44
Number of pages10
JournalMacromolecular chemistry and physics
Volume211
Issue number1
DOIs
Publication statusPublished - 5 Jan 2010
Externally publishedYes

Keywords

  • Dendrimers
  • Hyperbranched
  • Matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS)
  • Poly(ethylene oxide)
  • Star polymers

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