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Experimental data and theoretical considerations on vapor–liquid and liquid–liquid equilibria of hyperbranched polyglycerol and PVA solutions by M Seiler; W Arlt; H Kautz; H Frey is a Engineering article available to read on EtoBox.
What is Experimental data and theoretical considerations on vapor–liquid and liquid–liquid equilibria of hyperbranched polyglycerol and PVA solutions about?
Hyperbranched polyglycerol (PG) samples of different molecular weight were synthesized by ring-opening polymerization. Vapor-liquid equilibria (VLE) and liquid-liquid equilibria (LLE) of PG solutions were measured in order to evaluate the potential of hyperbranched polymers for process engineering applications such as extractive distillation and solvent extraction. The VLE experiments focused on the polyglycerol-ethanol-water system, which was contrasted with VLE results for the systems poly(vinyl alcohol) (PVA)-ethanol-water and ethanediol-ethanol-water in order to discuss the impact of polymer branching, functional groups, molecular weight and selective interactions on the phase behavior of the azeotropic ethanol-water mixture. Furthermore, weight activity coefficients and Flory-Huggins parameters for PG in ethanol and in water were determined. For the system acetylated PG-tetrahydrofuran (THF)-water LLE results were reported and distribution coefficients as well as selectivities were discussed. For the analyzed polymer solutions, the extent of inter-and intramolecular hydrogen bond formation is the dominating impact factor on solvent activity and therefore determines partition c
Who reads Experimental data and theoretical considerations on vapor–liquid and liquid–liquid equilibria of hyperbranched polyglycerol and PVA solutions?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- M Seiler; W Arlt; H Kautz; H Frey
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0378-3812)
- Published
- 2002
- Language
- EN
- Field
- Engineering (Physical Sciences)