Magnesium coated bioresorbable phosphate glass fibres: investigation of the interface between fibre and polyester matrices

Liu, Xiaoling, Grant, David M., Parsons, Andrew J., Harper, Lee T., Rudd, Chris D., and Ahmed, Ifty (2013) Magnesium coated bioresorbable phosphate glass fibres: investigation of the interface between fibre and polyester matrices. BioMed Research International, 2013. 735981.

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Bioresorbable phosphate glass fibre reinforced polyester composites have been investigated as replacement for some traditional metallic orthopaedic implants, such as bone fracture fixation plates. However, composites tested revealed loss of the interfacial integrity after immersion within aqueous media which resulted in rapid loss of mechanical properties. Physical modification of fibres to change fibre surface morphology has been shown to be an effective method to improve fibre and matrix adhesion in composites. In this study, biodegradable magnesium which would gradually degrade to Mg2+ in the human body was deposited via magnetron sputtering onto bioresorbable phosphate glass fibres to obtain roughened fibre surfaces. Fibre surface morphology after coating was observed using scanning electron microscope (SEM). The roughness profile and crystalline texture of the coatings were determined via atomic force microscope (AFM) and X-ray diffraction (XRD) analysis, respectively. The roughness of the coatings was seen to increase from 40 +/- 1 nm to 80 +/- 1 nm. The mechanical properties (tensile strength and modulus) of fibre with coatings decreased with increased magnesium coating thickness.

Item ID: 57997
Item Type: Article (Research - C1)
ISSN: 2314-6133
Copyright Information: © 2013 Xiaoling Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Funders: China Scholarship Council, University of Nottingham
Date Deposited: 17 Apr 2019 09:23
FoR Codes: 09 ENGINEERING > 0912 Materials Engineering > 091202 Composite and Hybrid Materials @ 100%
SEO Codes: 86 MANUFACTURING > 8608 Human Pharmaceutical Products > 860899 Human Pharmaceutical Products not elsewhere classified @ 100%
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