Journal of Materials Science

, Volume 49, Issue 18, pp 6225–6239 | Cite as

Controlling foam morphology of polystyrene via surface chemistry, size and concentration of nanosilica particles

  • Seyed Esmaeil Zakiyan
  • Mohamad Hossein Navid FamiliEmail author
  • Mohammad Ako


Controlling cell morphologies of polymeric foams is an important part of controlling foam properties. In this study, the effects of particle size, particle content, and particle surface chemistry on cell nucleation in nanosilica/polystyrene (PS) composites are investigated. A theoretical hypothesis on the effect of nanoparticle size on cell nucleation in PS matrix foam was examined. The surface chemistry of nanosilica particles was studied by modifying them with Vinyltriethoxysilane (VTES) silane coupling agent. The microcellular porous materials of neat and composite PS were prepared by batch foaming technique (pressure quench) using supercritical carbon dioxide (ScCO2) as a blowing agent. It was found that the size of the pores decreases and the cell density increases with the decrease in nanosilica size and the increase of silica loading. It was also observed that the surface treatment of the nanosilica particles have substantial effect on the decrease of the cell size and the increase of the cell density.


Foam Silica Nanoparticles Nucleate Agent Silane Coupling Agent Foam Sample 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The authors would like to thank Tarbiat Modares University because of financial supports and providing the technological facilities.


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Seyed Esmaeil Zakiyan
    • 1
  • Mohamad Hossein Navid Famili
    • 1
    Email author
  • Mohammad Ako
    • 1
  1. 1.Polymer Engineering Group, Faculty of EngineeringTarbiat Modares UniversityTehranIran

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