Journal article 1834 views 564 downloads
In-situ synthesis of magnetic iron-oxide nanoparticle-nanofibre composites using electrospinning
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Aled R. Lewis,
Rhodri Williams ,
Karl Hawkins ,
Thierry Maffeis ,
Chris J. Wright,
Christopher Wright
Materials Science and Engineering: C, Volume: 70, Pages: 512 - 519
Swansea University Authors:
Daniel Curtis , Rhodri Williams , Karl Hawkins , Thierry Maffeis , Christopher Wright
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DOI (Published version): 10.1016/j.msec.2016.09.014
Abstract
We demonstrate a facile, one-step process to form polymer scaffolds composed of magnetic iron oxide nanoparticles (MNPs) contained within electrospun nano- and micro-fibres of two biocompatible polymers, Poly(ethylene oxide) (PEO) and Poly(vinyl pyrrolidone) (PVP). This was achieved with both needle...
| Published in: | Materials Science and Engineering: C |
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| ISSN: | 0928-4931 |
| Published: |
2017
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa29839 |
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| Abstract: |
We demonstrate a facile, one-step process to form polymer scaffolds composed of magnetic iron oxide nanoparticles (MNPs) contained within electrospun nano- and micro-fibres of two biocompatible polymers, Poly(ethylene oxide) (PEO) and Poly(vinyl pyrrolidone) (PVP). This was achieved with both needle and free-surface electrospinning systems demonstrating the scalability of the composite fibre manufacture; a 228 fold increase in fibre fabrication was observed for the free-surface system. In all cases the nanoparticle-nanofibre composite scaffolds displayed morphological properties as good as or better than those previously described and fabricated using complex multi-stage techniques. Fibres produced had an average diameter (Needle-spun: 125 ± 18 nm (PEO) and 1.58 ± 0.28 μm (PVP); Free-surface electrospun: 155 ± 31 nm (PEO)) similar to that reported previously, were smooth with no bead defects. Nanoparticle-nanofibre composites were characterised using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), dynamic light scattering (DLS) (Nanoparticle average diameter ranging from 8 ± 3 nm to 27 ± 5 nm), XRD (Phase of iron oxide nanoparticles identified as magnetite) and nuclear magnetic resonance relaxation measurements (NMR) (T1/T2: 32.44 for PEO fibres containing MNPs) were used to verify the magnetic behaviour of MNPs. This study represents a significant step forward for production rates of magnetic nanoparticle-nanofibre composite scaffolds by the electrospinning technique. |
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| College: |
Faculty of Science and Engineering |
| Start Page: |
512 |
| End Page: |
519 |