## Abstract In chemical engineering applications involving solvent removal from a concentrated polymer solution where diffusion is the governing process (e.g. dry spinning of synthetic silk‐like fibres), the determination of the concentration‐dependent diffusion coefficient is essential. Diffusion
Determination of the coefficients of selective sorption in polymer solutions in multicomponent solvents from density increments
✍ Scribed by Kratochvíl, Pavel ;Pouchlý, Julius ;Sedláček, Blahoslav
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1972
- Tongue
- English
- Weight
- 242 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0449-2978
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✦ Synopsis
Abstract
The density increment method has been used to measure the selective sorption coefficient of 2,2,3,3‐tetrafluoropropanol (TFP) onto poly(methyl methacrylate) from the solvent mixture benzene‐TFP (80:20 by volume). The results are in good agreement with the data obtained by the established refractive index increment method. The density increment method seems to be a promising tool for the characterization of polymer solutions in multicomponent solvents.
📜 SIMILAR VOLUMES
Al~-traet--The selective sorption of 2,2,3,3-tetrafluoropropanol (TFP) on to the macromolecules of polystyrene, poly(methyl methacrylate) and mixtures of these homopolymers, and also on to the macromolecules of the corresponding random and alternating copolymers has been measured. Dilute polymer sol
## AWract-Tests have been performed using solutions of poly(methy1 methacrylate) with methanol, hexane and diethyl ether as precipitants; they involved size exclusion chromatography, the use of polymer with V-labelled end-groups and the use of "C-labelled benzoyl peroxide as a contaminant in the p