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

被引：31

作者：

GREGG, CJ

CHEN, SJ

STEIN, FP

RADOSZ, M

机构：

[1] EXXON RES & ENGN CO,ANNANDALE,NJ 08801

[2] LEHIGH UNIV,DEPT CHEM ENGN,BETHLEHEM,PA 18015

来源：

FLUID PHASE EQUILIBRIA | 1993年 / 83卷

关键词：

EXPERIMENTAL DATA; HIGH PRESSURE; POLYMERS; PHASE EQUILIBRIA; EQUATION OF STATE; SUPERCRITICAL; ETHYLENE; PROPYLENE; SAFT;

D O I：

10.1016/0378-3812(93)87041-X

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Temperature-pressure and pressure-concentration cloud-point transitions were measured for solutions of ethylene-propylene copolymer (PEP) in ethylene and in propylene in the critical region. The cloud points were visually observed in variable-volume optical cells up to 200-degrees-C and 2000 bar. While UCST, LCST, and U-LCST transitions were observed for PEP solutions in propylene, only U-LCST behavior was observed for PEP solutions in ethylene for the molecular weight range investigated (790-96000 g/mol). Statistical Associated Fluid Theory (SAFT) was used to correlate the experimental cloud points.

引用

页码：375 / 382

页数：8

共 8 条

[1]

CHEN SJ, 1992, IN PRESS MACROMOLOLE

[2]

CHEN SJ, 1992, UNPUB J CHEM ENG DAT

[3] PHASE EQUILIBRIA OF POLYMER-SOLVENT SYSTEMS AT HIGH PRESSURES NEAR THEIR CRITICAL LOCI .2. POLYETHYLENE-ETHYLENE [J].