NSTI Nanotech 2009

Barrier Properties of Model Epoxy Nanocomposites

L. Sun, W.-J. Boo, A. Clearfield, H.-J. Sue, H.Q. Pham
Texas A&M University, US

Keywords: barrier properties, epoxy nanocomposite, alpha-zirconium phosphate, degree of exfoliation, aspect ratio


The barrier properties of two sets of model epoxy nanocomposites with variations in nanoplatelet exfoliation level and aspect ratio have been investigated. The results show that both the exfoliation level and aspect ratio of nanoplatelets have a significant effect on the nanocomposite barrier properties. The results have also been correlated with a number of semi-empirical and physical models. It is found that both Gusev-Lustiís 3D model and Nielsenís 2D model give good correlation with experimental findings. Implication of the present study for barrier properties improvement of polymer nanocomposites is discussed.
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