同轴共纺技术制备聚苯乙烯中空亚微米纤维

利用同轴静电纺丝技术制备出壳层为聚苯乙烯(PS),芯层为聚乙烯吡咯烷酮(PVP)的壳-芯结构复合纤维,通过除去芯层PVP,成功地制备出了PS中空亚微米纤维。并对其进行了TEM、SEM测试。结果表明,纺丝过程中内、外液流速比值K直接影响着复合泰勒锥的形成及复合纤维的微观形态,且复合纤维平均直径随K值的增大而减小。

Preparation of Polystyrene Hollow Submicro-Fiber by Coaxial Electrospinning

In this paper,polystyrene(PS) hollow submicro-fiber has been successfully prepared by coaxial electrospinning technique with two polymer solutions,polystyrene/DMF and poly(vinyl pyrrolidone)/ethanol,followed by a removal of poly(vinyl pyrrolidone).The PS hollow submicro-fiber was characterized by TEM and SEM.The results show that the relative(inner-to-outer) flow rate K value directly effects on the forming of compound Taylor cone and the morphology of the composite fibers.Moreover,the average diameter of the composite fibers decreases as K value increases.