Characterization of the interactions in polymer/silica systems by inverse gas chromatography

• Published in: Macromolecular symposia. Vol. 169; no. 1; pp. 45 - 55
• Main Authors: Voelkel, Adam, Milczewska, Kasylda, Jȩczalik, Jerzy
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag GmbH 01.05.2001; WILEY‐VCH Verlag GmbH
• Subjects: Fillers; Inverse gas chromatography; Oligomers; Silicon dioxide; Solubility parameters
• ISSN: 1022-1360; 1521-3900
• DOI: 10.1002/1521-3900(200105)169:1<45::AID-MASY45>3.0.CO;2-J

Authors propose to express the magnitude of modified filler/polymer interactions by Flory ‐ Huggins χ23 parameter. We investigated polyether‐urethane/modified silica systems containing different amounts of filler (5, 10,20%wt). Moreover, information on the physicochemical properties of oligomer and modified silicas were presented with the use of the following parameters: • solubility parameter δ2, describing properties of the polymer layer; • Flory‐Huggins parameter χ12∞ which describes polymer‐solute or mixture polymer/silica‐solute interactions. These parameters δ2 and χ12∞ are obtained from Inverse Gas Chromatography experiments. The influence of the IGC experiment temperature, the content of modified silica, the nature of test solute on the evaluated parameters are presented and discussed.