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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

High molar mass silicone rubber reinforced with montmorillonite clay masterbatches: Morphology and mechanical properties

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Author(s):
Kaneko, Manuela L. Q. A. [1] ; Romero, Rafaelle Bonzanini [1] ; Goncalves, Maria do Carmo [1] ; Yoshida, Inez V. P. [1]
Total Authors: 4
Affiliation:
[1] Univ Estadual Campinas, Inst Chem, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: EUROPEAN POLYMER JOURNAL; v. 46, n. 5, p. 881-890, MAY 2010.
Web of Science Citations: 30
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. (AU)

FAPESP's process: 03/09926-1 - Polymeric and ceramic materials
Grantee:Inez Valeria Pagotto Yoshida
Support Opportunities: PRONEX Research - Thematic Grants