Using SAXS approach to estimate thermal conductivity of polystyrene/zirconia nanocomposite by exploiting strong contrast technique

M. Baniassadi, F. Addiego, A. Laachachi, Said Ahzi, H. Garmestani, F. Hassouna, A. Makradi, V. Toniazzo, D. Ruch

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

In this study, the effective thermal conductivity of a polymer/ZrO 2 nanocomposite material has been calculated based on small-angle X-ray scattering (SAXS) data. These SAXS results have been used to calculate statistical two-point correlation functions of the nanostructure. A statistical continuum approach based on higher-order correlation functions has been utilized to estimate the effective thermal conductivity of this zirconia-filled polymer. A strong-contrast formulation was used to predict the effective conductivity of the nanocomposite by means of two- and three-point statistical functions with an approximation of the three-point probability functions for a two-phase media. The thermal conductivity of ZrO2 particles is estimated using a semi-inverse application of the strong contrast technique for a buckypaper material sample. Comparison of the simulated results with our experimental results for polystyrene/ZrO2 nanocomposite samples with different volume fractions shows satisfactory agreement. This supports the capability of our proposed methodology to predict effective thermal conductivity of nanocomposites.

Original languageEnglish
Pages (from-to)2742-2748
Number of pages7
JournalActa Materialia
Volume59
Issue number7
DOIs
Publication statusPublished - Apr 2011
Externally publishedYes

Fingerprint

Polystyrenes
X ray scattering
Zirconia
Thermal conductivity
Nanocomposites
Filled polymers
Nanostructures
Volume fraction
Polymers
zirconium oxide

Keywords

  • Analytical methods
  • Nanocomposite
  • Small-angle X-ray scattering
  • Strong contrast statistical approach
  • Thermal conductivity

ASJC Scopus subject areas

  • Ceramics and Composites
  • Metals and Alloys
  • Polymers and Plastics
  • Electronic, Optical and Magnetic Materials

Cite this

Using SAXS approach to estimate thermal conductivity of polystyrene/zirconia nanocomposite by exploiting strong contrast technique. / Baniassadi, M.; Addiego, F.; Laachachi, A.; Ahzi, Said; Garmestani, H.; Hassouna, F.; Makradi, A.; Toniazzo, V.; Ruch, D.

In: Acta Materialia, Vol. 59, No. 7, 04.2011, p. 2742-2748.

Research output: Contribution to journalArticle

Baniassadi, M, Addiego, F, Laachachi, A, Ahzi, S, Garmestani, H, Hassouna, F, Makradi, A, Toniazzo, V & Ruch, D 2011, 'Using SAXS approach to estimate thermal conductivity of polystyrene/zirconia nanocomposite by exploiting strong contrast technique', Acta Materialia, vol. 59, no. 7, pp. 2742-2748. https://doi.org/10.1016/j.actamat.2011.01.013
Baniassadi, M. ; Addiego, F. ; Laachachi, A. ; Ahzi, Said ; Garmestani, H. ; Hassouna, F. ; Makradi, A. ; Toniazzo, V. ; Ruch, D. / Using SAXS approach to estimate thermal conductivity of polystyrene/zirconia nanocomposite by exploiting strong contrast technique. In: Acta Materialia. 2011 ; Vol. 59, No. 7. pp. 2742-2748.
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