This article demonstrates the effect of exfoliated nano-clay on the microcellular foam processing of amorphous and crystalline nylon. Amorphous and crystalline nylon 6 nanocomposites are prepared using a twin-screw extruder. The exfoliated nanocomposite structures are characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Nylon and its nanocomposites are foamed in extrusion using supercritical CO 2 . Subsequently, the cell morphologies of nylon and its nanocomposite foams are investigated. It appeared that the nano-clay not only enhanced cell nucleation, but also suppressed cell deterioration during the microcellular foaming of nylon.
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Zheng et al. (2006) studied this question.
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