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Sponge effects in polymers interacting with low‐molecular weight compounds
Author(s) -
Mikheev Y. A.,
Guseva L. N.,
Zaikov G. E.
Publication year - 2000
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 - 10.1002/1097-4628(20001227)78:14<2435::aid-app20>3.0.co;2-g
Subject(s) - polymer , sponge , polymer science , materials science , polymer chemistry , chemical engineering , chemistry , composite material , geology , engineering , paleontology
The competition between additives for a place in the polymer matrix are discovered when the blending components ensure the enthalpy of mixing to be nearly zero. The competition of the additives exists as the process of accelerated exudation of one another from glasslike or jellylike films. This is inconsistent with the entropic nature of the mixtures assumed for the homogeneous polymer solutions. The considered effects are beyond the statistical thermodynamics of solutions, and they are explained by the specificity of the chain‐sponge organization of a noncrystalline polymer matrix. The equilibrium sorption of volatile compounds by polymer samples is explained by the mechanism of structural entropic solvation and is described by the equation of the micropore volume filling theory. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 2435–2442, 2000