Fibers and Polymers

The Korean Fiber Society (한국섬유공학회)
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Processing of Microcellular Nanocomposite Foams by Using a Supercritical Fluid

  • Wee, Dongho (School of Materials Science and Engineering, Seoul National University) ;
  • Seong, Dong Gi (School of Materials Science and Engineering, Seoul National University) ;
  • Youn, Jae Ryoun (School of Materials Science and Engineering, Seoul National University)
  • Published : 2004.06.01
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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

References

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