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Surface characteristics of polymer/small molecule blends
Author(s) -
Champagne France,
Li J.F.,
Schreiber H. P.,
DipaolaBaranyi G.
Publication year - 1994
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.1994.070540605
Subject(s) - miscibility , polymer , interphase , polystyrene , inverse gas chromatography , polycarbonate , surface energy , materials science , polymer blend , thermodynamics , molecule , flory–huggins solution theory , base (topology) , chemical engineering , surface (topology) , polymer chemistry , chemistry , organic chemistry , copolymer , composite material , physics , mathematical analysis , genetics , biology , mathematics , geometry , engineering
Abstract Inverse gas chromatographic data have been obtained for polystyrene, polycarbonate, and two substituted amines used as additives in the polymers. Surface energies have been determined and evaluations made of acid/base interaction parameters and Flory–Huggins χ values for the surface bounded interphase. It was shown that acid/base considerations are implicated in the miscibility of these polymer/additive systems. Surface energy analyses showed that surface and bulk compositions in blends differed whether or not the blend components were miscible. Composition differences were the result of thermodynamic drives to minimize surface free energy. © 1994 John Wiley & Sons, Inc.