Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 5, Issue 15, Pages 6864-6872Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am401895f
Keywords
poly(lactic acid); hydroxyapatite; melt spinning; fiber morphology; mechanical properties; thermal properties
Funding
- Bo Rydin Foundation
- SCA, Sweden
- Gunilla Edlinds Foundation
- SEB AB, Sweden
- School of Engineering, University of Boras, Sweden
- national agency TEKES
- national agency MIUR
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Composite fibers from poly(lactic acid) (PLA) and hydroxyapatite (HA) particles were prepared using melt spinning. Different loading concentrations of HA particles (i.e., 5, 10, 15, and 20 wt %) in the PIA fibers and solid-state draw ratios (SSDRs) were evaluated in order to investigate their influence on the fibers' morphology and thermal and mechanical properties. A scanning electron microscopy investigation indicated that the HA particles were homogeneously distributed in the PLA fibers. It was also revealed by atomic force microscopy and Fourier transform infrared spectroscopy that HA particles were located on the fiber surface, which is of importance for their intended application in biomedical textiles. Our results also suggest that the mechanical properties were independent of the loading concentration of the HA particles and that the SSDR played an important role in improving the mechanical properties of the composite fibers.
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