Polyethersulfone Composites Reinforced by Silica Nanoparticles

Abstract:

Three series of PES/SiO₂ composites, containing 0.5-7 wt% nano-sized SiO₂ with different specific surface area, were prepared by solution blending. The resulting composites exhibit the higher glass transition temperature (Tg) than that of pure PES. The Tg of composite showed a maximum increment of 24.0 °C by the addition of 7 wt% A300. The trade name of A300 is Aerosil 300. It is one of the fumed silica nanoparticles products of Degussa. The decomposition temperatures (Td) of composites were always higher than that of pure PES and showed a maximum increment of 37.0 °C by the addition of 3 wt% A300. The oxygen transmission rate of composites are always lower than that of pure PES and decreases with increasing SiO₂ content to 1 wt% and then increases to 7 wt%. The composite with 1 wt% A300 exhibits a maximum decrement percentage of 46 %. The Tg, Td, and oxygen barrier property are as a function of the SiO₂ content and size. The finer SiO₂ are more effective in increasing the Tg, Td and oxygen barrier property.

• Periodical: Applied Mechanics and Materials (Volumes 217-219)
• Pages: 264-267
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.217-219.264
• Online since: November 2012
• Authors: Cheng Fang Ou
• Keywords: Decomposition Temperatures, Glass Transition Temperature, Nanocomposite, Nanoparticle, Oxygen Transmission Rate

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