| 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 |
