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Polymer-Clay Nanocomposite Materials: Solution and Bulk Properties



G Schmidt, A Nakatani, Paul Butler, V Ferreiro, Alamgir Karim, Charles C. Han


The influence of shear on viscoelastic polymer-clay solutions was investigated by means of small-angle neutron scattering (SANS) under shear. SANS measured the shear-induced orientation of polymer and platelets. With increasing shear rate an anisotropic scattering pattern developed. At higher shear rates, the scattering anisotropy increases due to the increased orientation of the clay platelets in the shear field. Cessation of shear leads to fast recovery demonstrating the system to be highly elastic. As a result of drying, these solutions produce translucent nanocomposite films with a microporous membrane character. Depending on the preparation and degree of polymer-clay film dispersion, it is possible to modify the morphology and elastic properties of nanocomposite materials. Atomic Force Microscopy (AFM) reveals the network character and the development of morphology as a function of polymer concentration. Preliminary SANS experiments on the films will be correlated to morphologies obtained from AFM.
Polymer-Clay Nanocomposite Materials: Solution and Bulk Properties


AFM, atomic force microscopy, nanocomposite films, polymer-clay, polymer-clay film, SANS, shear, small-angle neutron scattering, viscoelastic


Schmidt, G. , Nakatani, A. , Butler, P. , Ferreiro, V. , Karim, A. and Han, C. (2001), Polymer-Clay Nanocomposite Materials: Solution and Bulk Properties, Polymer-Clay Nanocomposite Materials: Solution and Bulk Properties (Accessed July 21, 2024)


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Created December 31, 2000, Updated October 12, 2021