中文摘要：

以甲苯和N,N二甲基甲酰胺(DMF)混合液为溶剂,采用静电纺丝法制备了PVK纳米纤维;通过扫描电子显微镜(SEM)对纤维形貌进行了表征,并进一步研究了浓度、纺丝电压及纺丝距离等实验条件对纤维形貌的影响;采用荧光发射光谱及荧光显微镜对电纺纤维进行了光学表征.结果表明:纤维直径随着纺丝溶液质量分数的增加而增大;随着电压的增加先减小后增加;随着纺丝距离的增加而减小.荧光显微镜分析表明:PVK电纺纤维在紫外光照下发蓝紫光.荧光光谱分析表明:与PVK薄膜比较,PVK电纺纤维在437 nm处出现一个新的发射峰.

英文摘要：

PVK nanofibers were prepared by electrospinning of PVK blend solutions in solvent mixtures of N,N-dimethylformamide(DMF) / Toluene.The morphology of eletrospun fibers were characterized by scanning electron microscopy,fluorescence optical microscopy and fluorescence spectrophotometer,while the effects of concentration,applied voltage and electrospun distance on morphology of electrospun fibers were investigated.The results showed that the fiber diameter increased with the increase of the weight ratio of its...