Synthesis and characterization of covalently interconnected phosphazene - Silicate hybrid network membranes

Youngkyu Chang, Harry R. Allcock

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

A method for the cross-linking of water-soluble polyphosphazenes via a sol-gel condensation is described. Precursor polymers were produced by covalently binding an organosilicon alkoxide to the terminus of pendent oligoethylenoxy chains on poly[bis(methoxyethoxyethoxy)phosphazene]. Subsequent hydrolysis and condensation of these precursors yielded hybrid silicate networks with covalently integrated polyphosphazenes. The hybrid networks showed high water uptake values (up to 1570 wt %). The release of Rose Bengal, Biebrich Scarlet, and FITC-albumin from the phosphazene-silicate matrix was studied over time as a function of network density. These hydrogels are of interest as potential materials for use in membranes or biomaterials.

Original languageEnglish (US)
Pages (from-to)4449-4454
Number of pages6
JournalChemistry of Materials
Volume17
Issue number17
DOIs
StatePublished - Aug 23 2005

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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