P-V-T PROPERTIES OF ALTERNATING POLY(ETHYLENE-PROPYLENE) LIQUIDS

Citation
Sj. Chen et al., P-V-T PROPERTIES OF ALTERNATING POLY(ETHYLENE-PROPYLENE) LIQUIDS, Journal of polymer science. Part B, Polymer physics, 32(10), 1994, pp. 1791-1798
Citations number
23
Categorie Soggetti
Polymer Sciences
ISSN journal
08876266
Volume
32
Issue
10
Year of publication
1994
Pages
1791 - 1798
Database
ISI
SICI code
0887-6266(1994)32:10<1791:PPOAPL>2.0.ZU;2-W
Abstract
The pressure-volume-temperature (P-V-T) properties of monodisperse alt ernating poly (ethylene-propylene) (hydrogenated polyisoprene) melts o f varying molecular weights are measured at 0.1 MPa < P < 200.1 MPa, a nd 290 K < T < 510 K in a dilatometer-type apparatus. The Flory-Orwoll -Vrij (FOV), Modified Cell Model (MCM), Sanchez-Lacombe (SL), and the Statistical Associating Fluid Theory (SAFT) equations of state are fou nd to correlate the experimental data with excellent accuracy, except either at low pressures and high temperatures, or at high pressures an d low temperatures. On average, MCM and SAFT fit the data slightly bet ter than FOV and SL. The equation-of-state parameters are found to be independent of molecular weight, especially for SAFT, as required by t he theory. (C) 1994 John Wiley & Sons, Inc.