A rheological analysis of interactions in phenoxy/organoclay nanocomposites |
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| Authors: | Ion Fernandez,Anton Santamarí a,Pere Castell |
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| Affiliation: | a Department of Polymer Science and Technology, Polymat Faculty of Chemistry, University of the Basque Country, P.O. Box 1072, 20080 San Sebastián, Spain
b Department of Energy and Environment, Institute of Carbochemistry Miguel de Luesma 5, 50018 Zaragoza, Spain |
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| Abstract: | Novel oscillatory flow results of phenoxy/organoclay nanocomposites are analysed considering the blocking effect of nanostructure on polymer chain mobility. The modification provoked by this hindering effect on loss tangent spectrum is investigated. The study of three different systems, involving a pristine montmorillonite and two montmorillonites modified with one alkyl tail and two alkyl tails, respectively, leads to conclude that polymer-alkyl repulsive interactions play the most important role in the chain mobility obstruction process. Our results suggest that polymer-alkyl interactions increase with temperature. |
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| Keywords: | Nanocomposites Organoclay Phenoxy Mechanical relaxation Chain mobility |
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