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

Authors
PRADHAN D CHEN C RADOSZ M
Citation
D. Pradhan et al., FRACTIONATION OF POLYSTYRENE WITH SUPERCRITICAL PROPANE AND ETHANE - CHARACTERIZATION, SEMIBATCH SOLUBILITY EXPERIMENTS, AND SAFT SIMULATIONS, Industrial & engineering chemistry research, 33(8), 1994, pp. 1984-1988
Citations number
10
Categorie Soggetti
Engineering, Chemical
Journal title
Industrial & engineering chemistry research → ACNP
ISSN journal
08885885
Volume
33
Issue
8
Year of publication
1994
Pages
1984 - 1988
Database
ISI
SICI code
0888-5885(1994)33:8<1984:FOPWSP>2.0.ZU;2-M
Abstract
Polystyrene is characterized as a mixture of a finite number of discre te pseudocomponents. Solubilities and partition coefficients of the ps eudocomponents in propane and in ethane are measured in semibatch expe riments at temperatures ranging from 323 to 453 K and pressures up to 67 MPa. An equation of state based on the statistical associating flui d theory (SAFT) is used to correlate the data. Increasing temperature and pressure are found to increase the solubilities and partition coef ficients, but decrease selectivities. The solubility of pseudocomponen ts is also found to depend on the molecular weight distribution of the polymer.