FRACTIONATION OF POLYSTYRENE WITH SUPERCRITICAL PROPANE AND ETHANE - CHARACTERIZATION, SEMIBATCH SOLUBILITY EXPERIMENTS, AND SAFT SIMULATIONS

被引：26

作者：

PRADHAN, D ^{[1
]}

CHEN, C ^{[1
]}

RADOSZ, M ^{[1
]}

机构：

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

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1994年 / 33卷 / 08期

关键词：

D O I：

10.1021/ie00032a013

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Polystyrene is characterized as a mixture of a finite number of discrete pseudocomponents. Solubilities and partition coefficients of the pseudocomponents in propane and in ethane are measured in semibatch experiments at temperatures ranging from 323 to 453 K and pressures up to 67 MPa. An equation of state based on the statistical associating fluid theory (SAFT) is used to correlate the data. Increasing temperature and pressure are found to increase the solubilities and partition coefficients, but decrease selectivities. The solubility of pseudocomponents is also found to depend on the molecular weight distribution of the polymer.

引用

页码：1984 / 1988

页数：5

共 10 条

[1]

[Anonymous], 1993, SUPERCRITICAL FLUID

[2] PHASE-EQUILIBRIA IN POLYMER-SOLUTIONS - BLOCK-ALGEBRA, SIMULTANEOUS FLASH ALGORITHM COUPLED WITH SAFT EQUATION OF STATE, APPLIED TO SINGLE-STAGE SUPERCRITICAL ANTISOLVENT FRACTIONATION OF POLYETHYLENE [J].