Journal of Materials Science

, Volume 46, Issue 17, pp 5628–5638 | Cite as

Investigation of the fracture mechanism and mechanical properties of polystyrene/silica nanocomposite in various silica contents

  • Hossein Salehi VaziriEmail author
  • Mohamadreza Abadyan
  • Meisam Nouri
  • Iraj Amiri Omaraei
  • Zahra Sadredini
  • Mohamad Ebrahimnia


There is limited research on the effect of silica on the mechanical properties of polystyrene. For this lack of information, this study has focused on the fracture mechanism and mechanical properties of Polystyrene/silica nanocomposite. Transmission electron microscopy showed proper dispersion of nanoparticles in PS matrix in both low and high filler loadings. Scanning electron microscopy, TOM micrography, and non-contact surface profiler were used to study the fracture surface and fracture mechanism characteristics of the nanocomposite. It seems that the debonding mechanism is an important mechanism in toughening of Polystyrene/silica nanocomposites. In addition, mechanical behavior of the samples was investigated. Tensile, flexural, and compressive strength and also impact and plain-strain fracture toughness of nanocomposite samples showed different behaviors in low and high nanoparticle loadings and interestingly, we found an optimum value less than 2% for nanoparticle loading in which we observed the highest improvement in mechanical properties of the nanocomposite.


Fracture Toughness Silica Content Tensile Modulus Neat Polymer Nanosilica Particle 



The authors are grateful for supports from Malek-Ashtar University of Technology and Tarbiat Modares University.


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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Hossein Salehi Vaziri
    • 1
    Email author
  • Mohamadreza Abadyan
    • 2
  • Meisam Nouri
    • 3
  • Iraj Amiri Omaraei
    • 1
  • Zahra Sadredini
    • 4
  • Mohamad Ebrahimnia
    • 3
  1. 1.Faculty of Materials and Manufacturing ProcessesMalek-Ashtar University of TechnologyTehranIran
  2. 2.Mechanical Engineering GroupIslamic Azad University, Ramsar BranchRamsarIran
  3. 3.Department of Materials EngineeringTarbiat Modares UniversityTehranIran
  4. 4.Faculty of Polymer and ColourAmirkabir University of TechnologyTehranIran

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