Glass transition in the system poly(methy1 methacrylate)/compressed gas was studied as a function of the gas pressure p using a high-pressure Tian-Calvet heat flow calorimeter. Measurements were made on PMMA-CHI, ;-C&, and ;-C02 at pressures to 200 atm. All three gases plasticize the polymer leading
โฆ LIBER โฆ
Plasticization of poly(methyl methacrylate) (PMMA) networks by supercritical carbon dioxide
โ Scribed by S.K. Goel; E.J. Beckman
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 755 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0032-3861
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## Abstract Plasticization of poly(ethyl methacrylate) (PEMA) by CO~2~ is investigated by dielectric relaxation spectroscopy. The dissipation factor of a dielectric cell containing the film and air gaps is measured as a function of frequency (1โ10,000 kHz) and CO~2~ pressure (0โ60 atm) over the tem
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