Chad Snyder - Organofunctionalized Montmorillonite/Epoxy Nanocomposites: The Effect of Interlayer Cation Distribution on Mechanical Properties

Document created by Chad Snyder on Aug 22, 2014
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  Publication Details (including relevant citation   information):

  M.C. Richardson, J.-H. Kim, D. Ho, C.R. Snyder, N.A. D'Souza, and   G.A. Holmes, Polymer Composites 32(1),   67-78 (2011).


  The present study indicates that a distribution of alkylammonium   chain lengths in the interlayer of montmorillonite (MM) results   in a greater degree of dispersion into an epoxy matrix (or   possibly different polymer matrices) and improved ultimate   tensile strengths. This hypothesis is supported by x-ray   diffraction (XRD) data from the modified MM clays, which clearly   shows that an increase in d-spacing does not result in an   improvement in tensile strengths. Additional support is obtained   from DSC analyses of the first and second heats of the treated   clays which indicate that the C6 alkyl amine in a deposited (C18   + C6) alkyl ammonium mixture results in intercalation pathways   for the epoxy resin.

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