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Equation of state of poly(dimethylsiloxane) melts

✍ Scribed by V. K. Sachdev; Ugur Yahsi; R. K. Jain

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
190 KB
Volume
36
Category
Article
ISSN
0887-6266

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✦ Synopsis

The pressure-volume-temperature (PVT) properties of three commercial samples of poly(dimethylsiloxane) are studied experimentally and theoretically in the temperature range 25-150ЊC and for pressure to Γ‡ 3 kbar. The Tait equation is employed to represent the data at elevated pressure. Isothermal compressibilities are computed for the three samples. The melt data are analyzed in terms of the Simha-Somcynsky hole theory, and scaling parameters of pressure, volume, and temperature are obtained. Satisfactory agreement between theory and experiment is found over the entire range of experimental pressures.

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