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Journal of Biomaterials Applications
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Properties of Maxillofacial Silicone Elastomers Reinforced with Silica Powder

A. G. Andreopoulos

Department of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou, 15780 Zografou, Athens, Greece

M. Evangelatou

Department of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou, 15780 Zografou, Athens, Greece

P. A. Tarantili

Department of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou, 15780 Zografou, Athens, Greece

Compounds of a silicone elastomer suitable for preparing maxillo-facial prostheses, reinforced with various amounts of silica powder, have been studied for their mechanical response and wetting properties in terms of contact angle. Tensile strength and elongation at break showed an increase with increasing silica volume fraction up to 35%, whereas the Young modulus displayed small dependence on the silica content and the resistance to tear increased continuously with filler volume fraction (Vf). The wetting properties assessed via the contact angle, seemed to degrade with increasing silica Vf, but a dependence on the elastomer network density has also been recorded.

Key Words: maxillofacial elastomers • silicones • silica • contact angle • wetting properties

Journal of Biomaterials Applications, Vol. 13, No. 1, 66-73 (1998)
DOI: 10.1177/088532829801300104
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