2008 NSTI Nanotechnology Conference and Trade Show - Nanotech 2008 - 11th Annual

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TechConnect Summit
Clean Technology 2008

High-density polyethylene reinforced with titania nanoparticles

F. Bondioli, A. Dorigato, P. Fabbri, A.M. Ferrari, M. Messori, A. Pegoretti
Università di Modena e Reggio Emilia, IT

Keywords:
nanocomposite, HDPE, titania

Abstract:
Titania nanoparticles were prepared by both hydrolysis of tetraethoxy titanium, in order to obtain a spherical shape, and by hydrothermal crystallisation. Nanoparticles were also surface modified with alkylsilanes in order to improve the compatibility with organic polymers. The obtained powders were fully characterized in order to define their physical and chemical properties. HDPE/TiO2 composites were prepared by melt mixing and were mechanically characterized. The presence of titania nanoparticles (in a concentration range of 1-5%vol) led to a significant increase of elastic modulus together with a slight increase of yield stress and a decrease of ultimate elongation. An interesting decrease of creep compliance for both elastic and viscoelastic components was also evidenced. Finally, HDPE-based composites containing commercial titania having dimension in the micrometer scale were prepared and characterized for comparison.


Nanotech 2008 Conference Program Abstract