利用静电纺丝技术制备了取向的柞蚕丝素/左旋聚乳酸(TSF/PLLA)纳米纤维毡.通过扫描电子显微镜(SEM)、X射线衍射分析(XRD)和拉伸测试分别对TSF/PLLA纳米纤维的形貌、结晶结构及力学性能进行了研究.将人成骨肉瘤细胞(MG-63)种植在TSF/PLLA纳米纤维上,通过荧光显微镜分析和MTT(四甲基偶氮噻唑蓝比色法),观察细胞在材料表面的生长情况,评价纳米纤维的生物学性能.结果表明,TSF含量为10％时,纤维直径分布均匀,结晶度高.但是,TSF含量超过10％后,纤维直径粗细不匀明显,纤维的力学性能下降.与无规纤维毡相比,取向的纳米纤维毡力学性能优异,初始模量高,更能够促进细胞增殖,对细胞的生长行为影响大.
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