Formation of membranes by means of immersion precipitation : Part II. the mechanism of formation of membranes prepared from the system cellulose acetate-acetone-water
A.J. Reuvers,C.A. Smolders +1 more
TLDR
In this article, the ternary diffusion process that occurs in a cellulose acetate (CA) -acetone casting solution immersed into a water bath has been investigated and the necessary concentration dependent thermodynamic and hydrodynamic parameters have been derived from experimental data on the three limiting binary mixtures.About:
This article is published in Journal of Membrane Science.The article was published on 1987-11-01 and is currently open access. It has received 377 citations till now. The article focuses on the topics: Cellulose acetate & Nucleation.read more
Citations
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Advanced functional polymer membranes
TL;DR: A comprehensive overview on the development of polymeric membranes having advanced or novel functions in the various membrane sepn processes for liq. and gaseous mixts can be found in this paper.
Journal ArticleDOI
Phase-Separation Processes in Polymer-Solutions in Relation to Membrane Formation
TL;DR: In this article, a review of new experimental and theoretical physical research related to the formation of polymeric membranes by phase separation of a polymer solution, and to the morphology of these membranes is presented.
Journal ArticleDOI
Membrane-based gas separation
William J. Koros,G. K. Fleming +1 more
TL;DR: In this article, the authors define the current scientific, technological and commercial boundaries of the field of membrane-based gas separation and project the position of these boundaries for the immediate future.
Journal ArticleDOI
Solvent resistant nanofiltration: separating on a molecular level
TL;DR: All SRNF-applications reported so far - in food chemistry, petrochemistry, catalysis, pharmaceutical manufacturing - will be reviewed exhaustively (324 references).
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Microstructures in phase-inversion membranes: Part I. Formation of macrovoids
TL;DR: In this article, a new mechanism for the formation of macrovoids in phase-inversion membranes is proposed based on the observed difference in type of demixing of a thin film of a polymer solution when immersed in a nonsolvent bath.
References
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Calculation of liquid-liquid phase separation in a ternary system of a polymer in a mixture of a solvent and a nonsolvent
F.W. Altena,C.A. Smolders +1 more
TL;DR: In this article, a numerical method for the binodal of liquid-liquid phase separation in a ternary system is described using the Flory-Huggins theory for three-component systems.
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Diffusion‐controlled formation of porous structures in ternary polymer systems
TL;DR: In this paper, the authors proposed a theory for the appearance of two-phase structures during the formation of polymer membranes from a casting solution immersed in a coagulant bath based on diffusion induced phase separation at the spinodal in the ternary nonsolvent-solvent-polymer system.
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The mechanism of formation of microporous or skinned membranes produced by immersion precipitation
TL;DR: In this article, it was shown that the addition of solvent to the coagulation bath favours non-solvent inflow and hence liquid-liquid demixing in the precipitating film.
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Preferential sorption versus preferential permeability in pervaporation
TL;DR: Theoretical values of preferential sorption have been derived from Flory-Huggins thermodynamics, extended with concentration dependent interaction parameters as discussed by the authors, and the calculated sorption values show a reasonable agreement with experimental values.