Journal
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 33, Issue 4, Pages 2152-2158Publisher
ELSEVIER
DOI: 10.1016/j.msec.2013.01.028
Keywords
Magnesium alloy; Implant; Alkylphosphonate SAM; Physiological solution; Spectroscopy
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Funding
- Ministry of Science, Education and Sport of the Republic of Croatia
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Mg and Mg-alloys are promising materials for biodegradable implants. In order to slowdown the Mg-alloy (AZ91D) degradation and enhance its biocompatibility, the alloy surface was modified with alkylphosphonate self-assembling films. The binding configuration and the structural organization of alkylphosphonate monolayers on the Mg-alloy surface were investigated using contact angle measurements, FTIR, and XPS. Combination of FTIR and XPS data indicated the presence of several different bonding modes (mono-, di-, and tri dentate) of phosphonate head groups with the alloy surface. The existence of well organized and ordered self-assembled alkylphosphonate monolayers with good barrier protecting properties in a physiological solution is a key step in the development of biocompatible Mg-alloy implants. (C) 2013 Elsevier B.V. All rights reserved.
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