Preparation of Hydroxyapatite Fibers by Electrospinning Technique |
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| Authors: | Yiquan Wu Larry L Hench Jing Du Kwang-Leong Choy Jingkun Guo |
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| Affiliation: | Department of Materials, Imperial College London, London SW7 2AZ, U.K.;School of Mechanical, Materials, Manufacturing Engineering and Management, University of Nottingham, University Park NG7 2RD, U.K.;State Key Lab of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China |
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| Abstract: | Hydroxyapatite (Ca10(PO4)6(OH)2, HA) fibers were prepared by electrospinning a precursor mixture of Ca(NO3)2·4H2O and (C2H5O)3PO with a polymer additive, followed by a thermal treatment. The X-ray diffraction (XRD) analysis of the annealed composite fibers revealed that pure HA phase could be obtained by annealing at 600°C for 1 h. The scanning electron microscopy (SEM) analysis showed the surface of as-electrospun composite fibers with an average diameter of 50 μm was smooth due to the amorphous nature of the polymer. However, the surface of the calcined HA fibers was rough because of the complete removal of the polymer. The pure HA fibers obtained by electrospinning in this work were up to 10 mm in length and 10–30 μm in diameter and the hydroxyapatite grain size was ～1 μm in the HA fibers. |
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| Keywords: | hydroxyapatite precursors fibers |
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