Journal
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 40, Issue -, Pages 157-163Publisher
ELSEVIER
DOI: 10.1016/j.msec.2014.03.064
Keywords
Hydroxyapatite; Silane coupling agent; Bone cements
Categories
Funding
- CONACYT (Mexico) grant [CB-2005-49024]
- LANNBIO Cinvestav Merida, Mexico [FOMIX-Yucatan 2008-108160, CONACYT LAB-2009-01, 123913]
- CONACYT LAB-2009-01 [123913]
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The aim of this work was to provide some fundamental information for optimization of silanization of hydroxyapatite intended for bone cement formulations. The effect of 3-(trimethoxysilyl) propyl methacrylate (MPS) concentration and solvent system (acetone/water or methanol/water mixtures) during HA silanization was monitored by X-ray diffraction (XRD), FTIR spectroscopy and EDX analysis. The effect of silanized HA on the mechanical properties of acrylic bone cements is also reported. It was found that the silanization process rendered hydroxyapatite with lower crystallinity compared to untreated HA. Through EDX, it was observed that the silicon concentration in the HA particles was higher for acetone-water than that obtained for methanol-water system, although the mechanical performance of cements prepared with these particles exhibited the opposite behavior. Taking all these results together, it is concluded that methanol-water system containing MPS at 3 wt.% provides the better results during silanization process of HA. (C) 2014 Elsevier B.V. All rights reserved.
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