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Effect of Nanoparticle Dispersion on Polymer Matrix and their Fiber Nanocomposites

  • Mohammed F. UddinEmail author
  • Chin-Teh Sun

Abstract

Dispersion of nanoparticles and its effect on mechanical properties were investigated by fabricating nanocomposites via conventional sonication, sol-gel, and modified sonication method. Silica nanoparticles dispersed in epoxy and MEK produced via sol-gel method were procured as Nanopox F 400 and MEK-ST-MS, respectively, to produce silica/epoxy nanocomposite whereas the conventional son-ication method was followed to produce alumina/epoxy and carbon nanofibers (CNF)/epoxy nanocomposites. The conventional sonication method was modified by combining it with sol-gel method to improve the dispersion quality as well as to increase the particle loading. The as-prepared nanocomposites were morphologically and mechanically characterized to investigate the effect of dispersion of nanoparticles on polymer matrix nanocomposites. The nanocomposites fabricated via sol-gel method revealed the most improved and consistent properties among all nanocomposites which showed almost proportional properties improvement with particle loading in contrast to conventional nanocomposites. Subsequently, the modified matrix (silica/epoxy) was used to make fiber reinforced nanocomposites via the VARTM process. The effect of improved matrix properties was reflected in the properties of fiber composites which showed significant improvements in compressive strength, tensile strength and modulus, fracture toughness and impact resistance.

Keywords

Compressive Strength Energy Release Rate Fiber Composite Fiber Volume Fraction Double Cantilever Beam 
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.

Notes

Acknowledgment

This work was supported by ONR through grant N00014–05–1–0552. Dr. Yapa D.S. Rajapakse was the technical monitor.

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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  1. 1.School of Aeronautics and Astronautics Purdue UniversityWest LafayetteUSA

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