Fibers and Polymers

, 5:160 | Cite as

Processing of microcellular nanocomposite foams by using a supercritical fluid

Article

Abstract

Polystyrene/layered silicate nanocomposites were prepared by melt intercalation. To examine the distribution of the clay in polymer matrix, small angle X-ray scattering (SAXS) and transmission electron microscopy (TEM) were used. Intercalated nanocomposites were obtained and their rheological properties were investigated. Microcellular nanocomposite foams were produced by using a supercritical fluid. As clay contents increased, the cell size decreased and the cell density increased. It was found that layered silicates could operate as heterogeneous nucleation sites. As the saturation pressure increased and the saturation temperature decreased, the cell size decreased and the cell density increased. Microcellular foams have different morphology depending upon the dispersion state of nanoclays.

Keywords

Nanocomposite Melt intercalation Microcellular foam Supercritical fluid Heterogeneous nucleation 

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Copyright information

© The Korean Fiber Society 2004

Authors and Affiliations

  1. 1.School of Materials Science and EngineeringSeoul National UniversitySeoulKorea

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