PHASE-BEHAVIOR OF BINARY ETHYLENE-PROPYLENE COPOLYMER SOLUTIONS IN SUBCRITICAL AND SUPERCRITICAL ETHYLENE AND PROPYLENE

Authors
GREGG CJ CHEN SJ STEIN FP RADOSZ M
Citation
Cj. Gregg et al., PHASE-BEHAVIOR OF BINARY ETHYLENE-PROPYLENE COPOLYMER SOLUTIONS IN SUBCRITICAL AND SUPERCRITICAL ETHYLENE AND PROPYLENE, Fluid phase equilibria, 83, 1993, pp. 375-382
Citations number
9
Categorie Soggetti
Engineering, Chemical","Chemistry Physical
Journal title
Fluid phase equilibria → ACNP
ISSN journal
03783812
Volume
83
Year of publication
1993
Pages
375 - 382
Database
ISI
SICI code
0378-3812(1993)83:<375:POBECS>2.0.ZU;2-Z
Abstract
Temperature-pressure and pressure-concentration cloud-point transition s were measured for solutions of ethylene-propylene copolymer (PEP) in ethylene and in propylene in the critical region. The cloud points we re visually observed in variable-volume optical cells up to 200-degree s-C and 2000 bar. While UCST, LCST, and U-LCST transitions were observ ed for PEP solutions in propylene, only U-LCST behavior was observed f or PEP solutions in ethylene for the molecular weight range investigat ed (790-96000 g/mol). Statistical Associated Fluid Theory (SAFT) was u sed to correlate the experimental cloud points.