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Viscoplastic Behaviour of PMMA Blends-the Effect of Moisture Absorption

G. Spathis

Department of Theoretical and Applied Mechanics, The National Technical University of Athens, GR-15773, Greece

C. Kavadias

Department of Theoretical and Applied Mechanics, The National Technical University of Athens, GR-15773, Greece; Orthopaedic Department, Athens University.

The mechanical properties of a polymeric blend based on PMMA and Poly(butyl methacrylate, methylmethacrylate) were studied. This mixture is the main component of the so-called bone cement used for various biomedical applications. Different types of samples have been prepared with varying the antibiotic content. The compressive stress-strain behaviour has been studied at various strain rates, before and after immersion in water at 37°C, simulating in this way the physiological environment of these materials. Moreover, thermal expansion coefficient tests were carried out in order to check the dimensional stability of the materials examined.

Journal of Reinforced Plastics and Composites, Vol. 16, No. 4, 306-320 (1997)
DOI: 10.1177/073168449701600402


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