Analysis of phase mixing in aged polymer networks of poly(ethylene glycol) and poly(trimethylolpropane triacrylate)

Paul D. Drumheller, Jeffrey A. Hubbell

Research output: Contribution to journalArticle

4 Scopus citations


The extent of phase mixing during ageing of semi-interpenetrating polymer networks of poly(ethylene glycol)(PEG) and poly(trimethylolpropane triacrylate)(TMPTA) was determined using differential scanning calorimetry. Twelve-month-old networks containing PEG with molecular weights of 8000-20000 g mol-1 were more phase-separated following ageing than freshly prepared networks, while other PEG molecular weight (4000 or 100 000 g mol-1) systems remained stable. The networks initially formed with fast TMPTA gelation rates remained phase-stable, while those which were initially formed with progressively slower TMPTA polymerization kinetics became more phase-dispersed upon ageing.

Original languageEnglish (US)
Pages (from-to)883-885
Number of pages3
Issue number4
StatePublished - 1995



  • ageing
  • IPN
  • phase stability

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

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