CO2 laser surface patterning of nylon 6,6 and the subsequent effects on wettability characteristics and apatite response

Waugh, David and Lawrence, Jonathan (2011) CO2 laser surface patterning of nylon 6,6 and the subsequent effects on wettability characteristics and apatite response. MAT10 Special Issue: Surface Engineering, 27 (10). pp. 724-728. ISSN 0267-0844

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Official URL: http://www.iom3.org/content/surface-engineering

Abstract

Simulated body fluid (SBF) has been used previously to predict the osseointegration potential of materials by assesing the apatite response. This paper details a study carried out using a CO2 laser to induce a number of surface patterns which inherently modified both the surface chemistry and surface topography of nylon 6,6 and gave rise to a difference in apatite response. These induced patterns caused a reduction in hydrophilicity with increased contact angles of up to 10°. Following immersion in SBF for 14 days each sample was weighed revealing an increase in weight of up to 0.029 g indicating that an apatite layer had begun to form. Energy dispersive X-ray (EDX) analysis identified the presence of calcium and phosphorous, two elements which support osteoblast cell response. It was found that the laser induced patterned samples gave rise to more layer crystals forming suggesting a more optimized surface for osteoblast cell growth.

Item Type:Article
Keywords:CO2 laser, nylon 66, wettability, biocompatibility, simulated body fluid (SBF)
Subjects:F Physical Sciences > F200 Materials Science
J Technologies > J511 Engineering Materials
F Physical Sciences > F361 Laser Physics
H Engineering > H673 Bioengineering
J Technologies > J510 Materials Technology
Divisions:College of Science > School of Engineering
ID Code:6098
Deposited By: David Waugh
Deposited On:04 Sep 2012 15:44
Last Modified:12 Jul 2013 10:07

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