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A Re‐Examination of the Concept of Hildebrand Solubility Parameter for Polymers
Author(s) -
Choi Phillip
Publication year - 2002
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20020501)23:8<484::aid-marc484>3.0.co;2-k
Subject(s) - hildebrand solubility parameter , solubility , polymer , vaporization , thermodynamics , macromolecule , equation of state , materials science , polymer science , chemistry , organic chemistry , physics , biochemistry
With the use of molecular modeling, we have demonstrated that solubility parameters obtained from current experimental methods correspond to a hypothetical vaporization process of which the conformational change of macromolecules in the vapor state is ignored. Since the energy associated with such a process is relatively large, its impact on the resultant δ cannot be neglected. This is especially important for polymers that shrink considerably in the vapor state.