Considerations and restrictions on the theoretical validity of the linearized cloudpoint correlation

The linearized cloudpoint curve correlation presented by Boom et al. [ Polymer, 1993, 34, 2348] is revised. Boundaries for the validity of the linearized cloudpoint correlation are given for which an interpretation from the Flory-Huggins theory is possible. The distinction between liquid-liquid and...

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Bibliographic Details
Published inPolymer (Guilford) Vol. 39; no. 20; pp. 4835 - 4840
Main Authors Kools, W.F.C., van den Boomgaard, Th, Strathmann, H.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.09.1998
Elsevier
Subjects
Applied sciences
demixing
Exact sciences and technology
Organic polymers
phase separation
Physicochemistry of polymers
polymer solutions
Properties and characterization
Solution and gel properties
demixing
phase separation
polymer solutions
Chemical solution
Mixed solvent
Thermodynamic model
Phase diagram
Phase separation
Theoretical study
Polymer
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Summary:The linearized cloudpoint curve correlation presented by Boom et al. [ Polymer, 1993, 34, 2348] is revised. Boundaries for the validity of the linearized cloudpoint correlation are given for which an interpretation from the Flory-Huggins theory is possible. The distinction between liquid-liquid and solid-liquid demixing by this correlation must also be subjected to some constraints, although the slope in the correlation still offers a good way to distinguish between solid-liquid and liquid-liquid demixing. The statement, however, that concentration-dependent interaction parameters can be derived from this correlation must be rejected. The empirical rule found by Li et al. [ Desalination, 1987, 62, 7955] can be rationalized on the basis of the LCC correlation.
ISSN:0032-3861
1873-2291
DOI:10.1016/S0032-3861(97)10168-9