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通过静电纺丝技术将聚乙烯吡咯烷酮(PVP)制成微米级纤维,并通过场发射扫描电镜对其微观形貌进行了表征,考察了纺丝液浓度、工作电压和溶剂种类等工艺参数对PVP纤维形貌的影响。结果表明,随着PVP纺丝液浓度以及电压的逐渐增大,纤维直径也随之增大,且直径分布更加均一。当以乙醇为溶剂,PVP质量浓度为45%,电压为23kV时,所得PVP纳米纤维的平均直径为1.65μm,直径分布较均一。
The polyvinylpyrrolidone (PVP) was made into micron fiber by electrospinning technology, and its microstructure was characterized by field emission scanning electron microscopy. The effects of technological parameters such as spinning solution concentration, working voltage and solvent type on the properties of PVP Effect of fiber morphology. The results show that with the concentration of PVP spinning solution and voltage gradually increased, the fiber diameter also increases, and the diameter distribution is more uniform. When ethanol was used as solvent, PVP concentration was 45% and voltage was 23 kV, the average diameter of PVP nanofibers was 1.65 μm, and the diameter distribution was more uniform.