Abstract
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 language | English (US) |
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Pages (from-to) | 883-885 |
Number of pages | 3 |
Journal | Polymer |
Volume | 36 |
Issue number | 4 |
DOIs | |
State | Published - 1995 |
Keywords
- ageing
- IPN
- phase stability
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Materials Chemistry