聚焦接收电极制备定向排列纳米纤维阵列  

Electrospinning Well-aligned Nanofiber Assembly Through Focusing Electrodes

作　　者：刘呈坤[1,2] 冯燕[2] 贺海军[1] 孙润军[1] 陈美玉[1] 

机构地区：[1]西安工程大学纺织与材料学院,陕西西安710048 [2]西安交通大学金属材料强度国家重点实验室,陕西西安710049

出　　处：《四川大学学报（工程科学版）》2015年第4期213-218,共6页Journal of Sichuan University (Engineering Science Edition)

基　　金：陕西省教育厅重点实验室科研计划资助项目(13JS035);西安工程大学纺织科学与工程学科建设经费资助项目(10709+0821);西安工程大学博士科研启动基金项目(BS1107)

摘　　要：以聚丙烯腈(PAN)/N,N-二甲基甲酰胺(DMF)溶液为纺丝原液,采用聚焦电极作为接收装置,利用静电纺丝方法制备纳米纤维,可以使获得的纤维集合体呈现悬浮状态,而且使纤维能够定向排列。研究了溶液浓度、不锈钢棒数量、接收距离、溶液流速、电压以及电极转速等参数对于纤维定向排列程度的影响规律。结果表明,6根棒电极和4根棒电极均能获得定向排列纤维;纤维的定向排列程度随着溶液浓度的增加而提高;适中的接收距离更有利于纤维定向排列;在相对较低的溶液流量和电压条件下,才能有效获得定向排列程度较高的纤维阵列;电极的旋转会劣化纤维的定向。Polyacrylonitrile（ PAN） / N,N-dimethylformamide（ DMF） solution was used as raw material to prepare nanofibers through electrospinning method. Focusing electrode was used as the collecting device. Suspended electrospun fibrous assembly can be obtained with a high degree of alignment through the process. Effects of solution concentration,number of stainless steel bar,collecting distance,flow rate and rotation speed of electrode on the degree of alignment of fibrous assembly were studied. Results showed that aligned fibers can be obtained through collecting electrodes with both four and six stainless steel bars. Degree of alignment for the obtained fibers increases with the increase of solution concentration. Medium collecting distance is more suitable for the alignment of fibers. Fibrous array with a high degree of alignment can only be prepared at relatively low flow rate and voltage. Rotation of collecting electrode can deteriorate the alignment of fibers.

关 键 词：静电纺丝 聚丙烯腈 聚焦电极 定向排列 纳米纤维 

分 类 号：TQ340[化学工程—化纤工业]