Nano-calcium phosphate (NCP) was firstly synthesized, and then characterized by scanning electronic microscopy (SEM) and X-ray diffraction (XRD). Subsequently, PLA/NCP composite nanofibers were obtained by electrospinning, and characterized by TEM, SEM, XRD and uniaxial tensile test. With TEM and XRD results, it was proved that NCP had been successfully incorporated into PLA fibers. As SEM images showed, there was no negative impact on the morphology of the composite fibers when NCP was at low concentrations, however, the morphology would be bad when the concentration was increased to higher than 7%. Then, tensile curves indicated that tensile strength increased with increasing NCP concentration, but decreased when the concentration was higher than 7%.

Key words: electrospinning, nano-calcium phosphate, poly(lactic acid), composite fiber, mechanical strength