Gas chromatographic determination of thermodynamic properties of polymer solutions at high pressure

Autor:	Ronald E. Carlson, Norman F. Brockmeier, Robert W. McCoy
Rok vydání:	1973
Předmět:	chemistry.chemical_classification Activity coefficient Range (particle radiation) Environmental Engineering Chromatography Atmospheric pressure General Chemical Engineering Analytical chemistry Polymer chemistry High pressure High-density polyethylene Solubility Interaction equation Biotechnology
Zdroj:	AIChE Journal. 19:1133-1139
ISSN:	1547-5905 0001-1541
Popis:	The gas chromatographic (GC) method for thermodynamic measurements of polymer-solvent systems at finite concentration has been improved to extend its operating range from atmospheric pressure to over 70 atm and over 240°C. This paper describes the design and opertion of the equipment and the mathematical treatment of the GC data, and presents experimental results for n-hexane and isooctane in high density polyethylene. These results include the solubility isotherms, activity coefficients, and polymer-solvent interaction parameters. The activity coefficients covering a range from 4 to 70 atm for n-hexane in the polymer solution were correlated successfully as a function of composition using a two-parameter segment interaction equation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4a8752a9768c73efdecb9399abbc7732 https://doi.org/10.1002/aic.690190609 Zobrazit plný text záznamu Plný text