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中文摘要：
首先利用静电纺丝法制备了热塑性聚酯弹性体（TPEE）纳米纤维。用扫描电镜（SEM）对纤维的形貌进行了表征,纤维的直径为300~600nm,讨论了纺丝液浓度和纺丝距离对纤维形貌产生的影响。然后在一定的负电压下制备了聚对苯二甲酸丁二醇酯（PBT）和聚左旋乳酸（PLLA）电纺纳米纤维,发现PBT和PLLA均具有良好的负极可纺性。再利用双喷头静电纺丝装置制备了TPEE/PBT与TPEE/PLLA扭曲螺旋复合纤维,用SEM对纤维的形貌进行了表征。结果表明,在适宜的电纺条件下,以TPEE为正极,PBT或PLLA为负极,均可以制备出具有扭曲螺旋结构的微/纳米纤维。
英文摘要：
TPEE nanofibers were prepared by electrospinning.The fiber morphology was observed by scanning electron microscopy（SEM）.The average fiber diameters range from 300nm to 600nm.The effects of process parameters including solution concentration and tip-to-collector distance on the morphology of the fibers were discussed.Subsequently,PBT and PLLA electrospun nanofibers were fabricated with a negative voltage respectively,indicating that both of the polymers have good spinnability.And then,TPEE/PBT and TPEE/PLLA composite fibers were obtained by two-spinneret electrospinning,using TPEE as positive electrode and PTT or PLLA as negative electrode.With SEM images,it was found that bicomponent helical structured micro/nanofibers can be successfully prepared with reasonable electrospinning parameters.
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