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Polymer miscibility in organic solvents and in plasticizers—a two‐dimensional approach
Author(s) -
Chen ShowAn
Publication year - 1971
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1971.070150519
Subject(s) - miscibility , solubility , hildebrand solubility parameter , polymer , plasticizer , solvent , materials science , dispersion (optics) , thermodynamics , polar , polymer chemistry , upper critical solution temperature , chemical engineering , lower critical solution temperature , chemistry , organic chemistry , copolymer , composite material , physics , astronomy , optics , engineering
From thermodynamic considerations based on associated solution models and from the Hansen's three‐dimensional solubility parameter concept, it is found that the solvent power of an organic liquid for a given polymer can be characterized by two parameters, δ h and χ H , where δ h is the hydrogen‐bonding solubility parameter of the liquid, and χ H is a term which takes account of the dispersion and polar interactions between the liquid and the polymer and of the effects due to temperature and molecular size of the liquid. It is also found that Hansen's solubility sphere for the polymer can be represented as a solubility circle in the proposed χ H −δ h plane. The proposed approach is applied successfully to polymer–plasticizer systems.