A Nanocomposite Poly(Methyl-Methacrylate) Bone Cement

Published

July 1, 2000

Author(s)

A H. Gomoll, A Bellare, W Fitz, T S. Thornhill, R D. Scott, P R. Jemian, Gabrielle G. Long

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.

Proceedings Title

Nanophase and Nanocomposite Materials, Symposium | 3rd | Nanophase and Nanocomposite Materials III | Materials Research Society

Volume

581

Conference Dates

November 1, 1999

Conference Location

Undefined

Conference Title

Materials Research Society Symposium Proceedings

Pub Type

Conferences

Keywords

bone, bone cement, nanocomposites, SAXS

Citation

Gomoll, A. , Bellare, A. , Fitz, W. , Thornhill, T. , Scott, R. , Jemian, P. and Long, G. (2000), A Nanocomposite Poly(Methyl-Methacrylate) Bone Cement, Nanophase and Nanocomposite Materials, Symposium | 3rd | Nanophase and Nanocomposite Materials III | Materials Research Society, Undefined (Accessed December 12, 2024)