Solvent activities in solutions of star and linear poly(ethylene oxide) and polystyrene

Solvent activities were measured using a gravimetric method in the range 48–70°C. The polymers were: 15-arm, 20-arm star and linear poly(ethylene oxide), and 8-arm star and linear polystyrene. The solvents were acetone, chloroform and cyclohexane. In the concentrated regime, to 0.5 solvent weight fr...

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Bibliographic Details
Published inPolymer (Guilford) Vol. 39; no. 25; pp. 6401 - 6405
Main Authors Mio, Cristina, Prausnitz, John
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.12.1998
Elsevier
Subjects
Applied sciences
Exact sciences and technology
gravimetric method
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
Organic polymers
Physicochemistry of polymers
POLYETHYLENES
POLYSTYRENE
Properties and characterization
Solution and gel properties
SOLUTIONS
SOLVENT PROPERTIES
star polymer
vapour–liquid equilibrium
vapour–liquid equilibrium
gravimetric method
star polymer
Solvent effect
Ethylene oxide polymer
Linear polymer
Concentration effect
Liquid vapor equilibrium
Styrene polymer
Star polymer
Experimental study
Comparative study
Concentrated solution
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Summary:Solvent activities were measured using a gravimetric method in the range 48–70°C. The polymers were: 15-arm, 20-arm star and linear poly(ethylene oxide), and 8-arm star and linear polystyrene. The solvents were acetone, chloroform and cyclohexane. In the concentrated regime, to 0.5 solvent weight fraction, there is no significant effect of polymer structure on solvent activities.
Bibliography:AC03-76SF00098
USDOE Director, Office of Energy Research (US)
LBNL-41646
ISSN:0032-3861
1873-2291
DOI:10.1016/S0032-3861(97)10074-X