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Type: Artigo de periódico
Title: High molar mass silicone rubber reinforced with montmorillonite clay masterbatches: Morphology and mechanical properties
Author: Kaneko, MLQA
Romero, RB
Goncalves, MD
Yoshida, IVP
Abstract: Rubber composites were obtained from natural (MT) or organomodified (O-MT) montmorillonite clay masterbatches and high molar mass poly(dimethylsiloxane)-gum (PDMS). The masterbatches were prepared by compounding MT or O-MT with a siloxane-polyether surfactant. The rubber composites were characterized by X-ray diffraction, small angle/wide angle X-ray scattering, scanning and transmission electron microscopies and tensile tests. The results showed that masterbatch compounding with O-MT improved the dispersion of this clay into the PDMS matrix. The morphology of the resulting composite showed a combination of intercalated and partially exfoliated clay layers with occasional clay aggregates. The addition of only 5 phr of O-MT into the PDMS matrix, via masterbatch compounding, improved the tensile strength as much as that obtained with the composite filled with 30 phr of O-MT clay prepared by the direct addition of the clay to PDMS. Moreover, the elongation at break was improved by at least 126%. (C) 2010 Elsevier Ltd. All rights reserved.
Subject: Silicone
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Citation: European Polymer Journal. Pergamon-elsevier Science Ltd, v. 46, n. 5, n. 881, n. 890, 2010.
Rights: fechado
Identifier DOI: 10.1016/j.eurpolymj.2010.02.007
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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