Transversal electrostatic strength of patterned collector affecting alignment of electrospun nanofibers

摘要

Conventional electrospinning produces randomly ordered nanofibers, however many potentialnapplications require precisely defined morphology and anisotropic properties of nanofibrousnmaterials. In this work, a collector consisting of two segments has been used to prepare uniaxiallynordered nanofibers. Optimized collector design comes from both analytical calculations ofnelectrostatic strength in the vicinity of the electrodes and from experimental verification bynpolyvinyl alcohol nanofibers fabrication. The transversal electric strength is a key factor innachieving very well aligned nanofibers. The results presented here help provide a betternunderstanding of the electrically induced alignment mechanism.