Analysis of nonsolvent–solvent–polymer phase diagrams and their relevance to membrane formation modeling
Year: 1986
Type: article
Abstract: Calculations have been carried out, based on Flory–Huggins solution theory, to analyze the behavior of the ternary nonsolvent–solvent–polymer phase diagram for typical membrane‐forming systems. Consideration is given to the behavior of the spinodal as well as binodal curves, tie‐line slopes, and critical points as a function of various parameters, most especially those related to the concentration dependency of the interaction parameters. Implications regarding membrane structure formation are discussed, and the suitability of different functional forms for the interaction parameter concentration dependence is also analyzed. The net result of these calculations is to demonstrate the importance of the various parameters in controlling the phase‐diagram behavior and particularly to show the critical role of the concentration dependence of the solvent–polymer interaction parameter in affecting the nature of the miscibility gap.
Authors: L. Yilmaz, A. J. McHugh
Institution: University of Illinois Urbana-Champaign
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2047570665