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The use of Flory‐Huggins parameters to characterization of polymer/filler interactions
Author(s) -
Milczewska Kasylda,
Voelkel Adam,
Jeczalik Jerzy
Publication year - 2003
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200390097
Subject(s) - polymer , inverse gas chromatography , filler (materials) , materials science , flory–huggins solution theory , hildebrand solubility parameter , composite number , polymer chemistry , oligomer , characterization (materials science) , chemical engineering , composite material , nanotechnology , engineering
Any quantitative information on the strength of interactions between inorganic filler and polymer is substantial for the future application of the composite. The magnitude of adhesion of two phases may be deduced from results collected by various experimental techniques. Inverse gas chromatography is very simple and precise method. Authors propose to express the magnitude of modified filler/polymer interactions by Flory‐Huggins χ 23 parameter. We investigated polyether‐urethane/3‐mercaptopropyltrimethoxysilane systems containing different amount of filler (5, 10, 20 wt%). Moreover, information on the physico‐chemical status of oligomer and modified silicas were presented with the use of the following parameters: • solubility parameter δ 2 and its components describing properties of the polymer layer; •Flory‐Huggins parameter χ 12 which describes polymer‐solute or filled polymer‐solute interactions. Subscripts 1 , 2 , 3 and m refers to solute, polymer, filler and polymer/filler mixture, respectively. Pure, low molecular weight, volatile test solutes were selected and injected into a chromatographic column. The influence of the IGC experiment, temperature, the content of modified silica and the nature of test solute on the evaluated parameters are presented and discussed.