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In this work,the mineralization of hydroxyapatite(HA)on chitosan(CS)-coated poly(latic acid)(PLA)nanofiber sheets was investigated and characterized.The gradual formation of HA phases on the CS surface was charaterized by X-ray powder diffraction(XRD),Fourier transform infrared spectroscopy(FT-IR),energy dispersive X-ray analysis(EDX),and scanning electron microscopy(SEM).