电纺纳米纤维取向对其特性的影响

传统静电纺丝技术制备的纳米纤维在收集装置中随机排列，取向度较低，性能较弱，限制了其应用。通过改进收集装置可获得有序排列的取向纳米纤维，取向纳米纤维在组织工程、传感器、增强材料和能源等领域具有极大地应用潜力，得到研究工作者们的广泛关注。制备高性能、低成本的纳米纤维材料已成为目前的研究目标和趋势。通过增加纤维取向度，纳米纤维分别在导电性能、压电性能、热稳定性、力学性能和光学性能上得到增强。指出借助纤维的取向，促使复合纳米纤维材料的性能改善及其在材料领域的应用。总结取向纳米纤维的特性优于随机排列纳米纤维的原理。

Influence of electrospun nanofiber orientation on its properties

The nanofibers prepared by traditional electrospinning technology are randomly arranged in the collection device, due to low degree of orientation and weak properties, limiting their application. Aligned nanofibers can be obtained by improving the collection device, and have great potential in the fields of tissue engineering, sensors, reinforcement materials and energy, and have attracted wide attention from researchers. Nowadays, preparation of high-performance and low-cost nanofiber materials has become the current research goal and trend. The degree of orientation is increased by aligned nanofibers, and the electrical conductivity, piezoelectricity, thermal stability, mechanical property and optical property of the electrospun nanofibers are enhanced. This paper discusses the use of fiber orientation to promote the performance improvement of composite nanofiber materials and their application in the field of materials. The principle that aligned nanofibers have better properties than randomly aligned nanofibers is summarized.