Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 398, Issue 1-2, Pages 137-141Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2005.03.012
Keywords
silicas; SBR; thermal treatment; surface properties; mechanical interfacial properties
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In this work, the effect of thermal treatment on crosslink density and adhesion properties of nano-scaled silica/rubber compounding are investigated. The chemical structures and surface properties of modified silicas are studied in terms of Fourier transform-IR (FT-IR), solid-state Si-29-NMR spectroscopy, and surface free energy, respectively. Also, the mechanical interfacial properties of the silica/rubber compounding are determined by the crosslink density and tearing energy (G(IIIc)). As a result, it was found that the thermally treated silicas became hydrophobic in nature, due to the condensation of surface hydroxyls and the formation of siloxane bond. From which, the increase of the siloxane bond on the silica surfaces led to an improvement of the dispersion of silicas in a rubber matrix, finally resulting in improving the tearing energy in a compounding system. (c) 2005 Elsevier B.V. All rights reserved.
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