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Adhesion enhancement of steel fibers to acrylic bone cement through a silane coupling agent
Author(s) -
Kotha S. P.,
Lieberman M.,
Vickers A.,
Schmid S. R.,
Mason J. J.
Publication year - 2006
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.30543
Subject(s) - materials science , composite material , ultimate tensile strength , silane , cement , bone cement , fiber , biocompatibility , rod , metallurgy , medicine , alternative medicine , pathology
The use of a silane coupling agent (methacryloxypropyl‐trichlorosilane) to improve the mechanical properties of steel fiber‐reinforced acrylic bone cements was assessed. Changes to the tensile and fracture properties of bone cements reinforced with silane‐coated or uncoated 316L stainless steel fibers of different aspect ratios were studied. Contact‐angle measurements indicated that the coupling agent coats the metal surface through room temperature treatments in a short time (within 2 h). Push‐out tests indicated that the interfacial shear strength of silane‐coated 316L stainless steel rods is 141% higher than the uncoated rods. The elastic moduli, ultimate stresses, and fracture toughness of the silane‐coated, steel fiber‐reinforced bone cements are significantly higher than the bone cements reinforced with uncoated steel fibers. There were no differences in the tensile mechanical properties of the silane‐coated or uncoated, steel fiber‐reinforced cements after aging in a physiological saline solution, indicating that the bonding effectiveness is decreased by the intrusion of water at the metal–polymer interface. Because of possible biocompatibility issues with leaching of the silane coupling agent and no long‐term mechanical benefit in simulated aging experiments, the use of these agents is not recommended for in vivo use. © 2005 Wiley Periodicals, Inc. J Biomed Mater Res, 2006