静电纺丝法制备聚己内酯/石墨烯复合材料纳米纤维

Preparation of PCL/graphene composite nanofibers by electrospinning

摘要: 利用静电纺丝方法制备了聚己内酯（PCL）/石墨烯复合纳米纤维，对电纺纳米纤维的表面微观形貌、热性能和力学性能等进行了表征，并研究了石墨烯的加入量、PCL浓度、电纺电压、接收距离等参数对复合纤维性能的影响.研究结果表明：当加入石墨烯质量分数为027%时，得到的电纺纳米纤维的力学性能提高最大，拉伸强度增加486%，杨氏模量增加660%；当PCL质量分数为11%，电纺电压为28 kV，接收距离为35 cm，电纺液流速为6 mL/h时，电纺过程稳定，可以得到直径均匀的纳米纤维.

Abstract: Nanofibers of PCL/graphene composite were prepared by electrospinning the mixed suspension of PCL and graphene. The morphologies as well as thermal and mechanical properties of the as-prepared fibers were studied, and the result reveals that the structure and properties of the composites depend on the ratio of graphene to PCL, concentration, voltage, and distance of collection. The tensile strength and Youngs modulus increase by 486% and 660% when 027% graphene is added, and homogeneous nanofibers of composites can be obtained when the concentration of PCL is 11% (mass fraction), spinning voltage 28 kV, collect distance 35 cm, and spinning speed 6 mL/h.