Take a sneak peek at the new NIST.gov and let us know what you think!
(Please note: some content may not be complete on the beta site.).
NIST Authors in Bold
|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|
|Dates:||November 1, 1999|
|Research Areas:||Characterization, Ceramics|