

Author: Lim S. R. Chow W. S.
Publisher: Taylor & Francis Ltd
ISSN: 0360-2559
Source: Polymer-Plastics Technology and Engineering, Vol.50, Iss.2, 2011-01, pp. : 182-189
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Abstract
Epoxy nanocomposites were prepared by addition of organo-montmorillonite (OMMT). The intercalation-ability of the OMMT was characterized using X-ray diffraction (XRD). The fracture toughness of the epoxy/OMMT nanocomposites was examined using single edge notched bending (SENB) tests. The OMMT (1-4 wt%) was successfully exfoliated in the epoxy matrix, however, the epoxy/OMMT (5 wt%) exhibited intercalated structure. Surprisingly, the fracture toughness of epoxy nanocomposites was increased by the increasing loading of OMMT. The result correlated well with the observation of FESEM micrographs where the epoxy/OMMT (5 wt%) exhibited highest degree of plastic deformation, attributed to the high toughness imparted by the incorporation of OMMT.
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