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Publication Citation: A Nanocomposite Poly(Methyl-Methacrylate) Bone Cement

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Author(s): A H. Gomoll; A Bellare; W Fitz; T S. Thornhill; R D. Scott; P R. Jemian; Gabrielle G. Long;
Title: A Nanocomposite Poly(Methyl-Methacrylate) Bone Cement
Published: July 01, 2000
Abstract: Poly(methyl methacrylate) (PMMA) based orthopaedic bone cements contain 1-3 micro υ size radiopacifier particles. Incomplete dispersion of these particles leads to the presence of 50-200 micro υ size agglomerates. These large defects are sites of high-stress concentration that reduce the fracture toughness of PMMA. In this study, the micrometer-sized radiopacifying particles of a commercial bone cement were replaced by nanosized fillers. Both, commercial and nanocomposite PMMA bone cements were characterized using ultra-small angle x-ray scattering and low voltage scanning electron microscopy; mechanical properties were evaluated using ASTM standard tensile testing. The results showed a substantial reduction of particle agglomerate size and a significant increase in tensile properties of the nanocomposite over that of the standard microcomposite bone cement.
Conference: Materials Research Society Symposium Proceedings
Proceedings: Nanophase and Nanocomposite Materials, Symposium | 3rd | Nanophase and Nanocomposite Materials III | Materials Research Society
Volume: 581
Dates: November 1, 1999
Keywords: bone;bone cement;nanocomposites;SAXS
Research Areas: Characterization, Ceramics