Toward High-Performance Coatings for Biomedical Devices: Study on Plasma-Deposited Fluorocarbon Films and Ageing in PBS
Laboratory for Biomaterials and Bioengineering, Department of Materials Engineering, University Hospital Research Center, Laval University, Quebec City, QC, G1K 7P4, Canada
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Materials 2010, 3(3), 1515-1532; https://doi.org/10.3390/ma3031515
Received: 8 January 2010 / Revised: 17 February 2010 / Accepted: 24 February 2010 / Published: 2 March 2010
(This article belongs to the Special Issue Advances in Biomaterials)
High performance coatings tailored to medical devices represent a recognised approach to modulate surface properties. Plasma-deposited fluorocarbon films have been proposed as a potential stent coating. Previous studies have shown promising adhesion properties: the 35 nm-thick film sustained plastic deformation up to 25% such as induced during the clinical implantation. In this study, the compositional and morphological changes of plasma-deposited fluorocarbon films were examined during ageing in a pseudo-physiological medium, a phosphate buffer solution (PBS), by angle-resolved XPS, FT-IR data and AFM images. The evolution of the ageing process is discussed: defluorination and crosslinking yielded an oxidized protective top layer onto the films, which showed further degradation.
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Keywords:
ageing; oxidation; plasma polymers; fluorocarbon films; XPS; FTIR; AFM
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MDPI and ACS Style
Holvoet, S.; Chevallier, P.; Turgeon, S.; Mantovani, D. Toward High-Performance Coatings for Biomedical Devices: Study on Plasma-Deposited Fluorocarbon Films and Ageing in PBS. Materials 2010, 3, 1515-1532.
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