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首先合成了纳米磷酸钙(NCP),用扫描电镜(SEM)和X射线衍射(XRD)进行了表征.再利用静电纺丝法制备了PLA/NCP复合纳米纤维,对纤维进行了TEM,SEM,XRD以及单轴拉力测试的表征.TEM和XRD测试表明,NCP已成功掺杂到聚乳酸纤维中,获得的纤维为复合纤维.SEM测试表明,NCP在溶液中浓度较小时,复合纳米纤维的形貌变化不大;NCP浓度超过PLA质量的7%后,纤维表面出现粒状物;随着浓度继续增大,粒状物逐渐增多,最后很难成纤.拉伸实验结果表明,复合纤维拉伸强度先随着NCP浓度的增加而增大,但NCP浓度超过7%后拉伸强度随着浓度的增加反而减小.
NCP was synthesized and characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). PLA / NCP composite nanofibers were prepared by electrospinning method. TEM, SEM, XRD and uniaxial tensile test.The TEM and XRD results show that NCP has been successfully doped into polylactic acid fiber and the obtained fiber is composite fiber.SEM test shows that when the concentration of NCP in solution is small, the shape of the composite nanofiber The morphology of the fiber changed little.When the concentration of NCP exceeded 7% of the mass of PLA, granular particles appeared on the surface of the fiber.With the increase of the concentration, the granular material increased gradually and finally became difficult to form fiber.The tensile test results showed that the tensile strength First, the concentration of NCP increased, but the NCP concentration of more than 7% of the tensile strength decreases with increasing concentration.