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Self-Reinforced Bioactive Glass-Bioabsorbable Polymer Composites

Published online by Cambridge University Press:  15 February 2011

Henna Niiranen  and
Pertti Törmälä
Henna Niiranen
Affiliation:
Institute of Biomaterials, Tampere University of Technology, P.O.Box 589, FIN-33 101 Tampere, Finland
Pertti Törmälä
Affiliation:
Institute of Biomaterials, Tampere University of Technology, P.O.Box 589, FIN-33 101 Tampere, Finland
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Abstract

Non-reinforced and self-reinforced bioactive-bioabsorbable composite rods were produced by extrusion and solid state die-drawing using P(L/DL)LA matrix and spherical glass particles. The structure and mechanical properties of composites were measured before and after die-drawing. The structure examination of composites by SEM showed the formation of fibrous reinforced structure of the polymer with spindle-shaped pores around the glass spheres during and oriented in the direction of die-drawing. Incorporation of glass into the polymer matrix turns the composite more brittle compared to neat polymer. By die-drawing the brittleness of the composite can be eliminated.

Not only the bioactivity and controlled degradation rate of composite but also structure and mechanical properties achieved during die-drawing make the self-reinforced bioactive glass- bioabsorbable polymer composites a novel implant material for temporary support of healing tissues.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 550: Symposium GG/HH/II – Biomedical Materials-Drug Delivery, Implants and Tissue Engr , 1998 , 267
Copyright
Copyright © Materials Research Society 1999

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References

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