title: Simulation on electrical field distribution and fiber falls in melt electrospinning.
abstract: Electrospinning is now a typical way of direct and consecutive producing nanofibers. In order to comprehensively understand the change of fiber chains in falling process of electrospinning, the article import dissipative particle dynamics (DPD) mesoscale simulation method into electrospinning study. In current work, an electrical force formula is proposed after simulation of the distribution of electrostatic field in electrospinning using Finite Element Method. Then, various electrostatic force, temperature and viscosity in electrospinning system are qualitatively simulated by DPD simulation. Results showed that the falling velocity of fiber increased with the increase of electrostatic force. It was found that the lower the polymer viscosity, the quicker the fiber falls. And the diameter of fiber significantly increased with augment of viscosity. Both of above are agree with experimental results. We also found that the falling velocity of fiber is in contrast with length of polymer chains, which has not been found in experiments.
authors.affiliation: College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
authors.forename: Yong
authors.initials: Y
authors.lastname: Liu
authors.forename: Chi
authors.initials: C
authors.lastname: Zhang
authors.forename: Ying
authors.initials: Y
authors.lastname: An
authors.forename: Xuetao
authors.initials: X
authors.lastname: He
authors.forename: Weimin
authors.initials: W
authors.lastname: Yang
mesh_terms: D003198:Computer Simulation; D004563:Electrochemistry / Q000379:methods*; D004574:Electromagnetic Fields; D006358:Hot Temperature; D008956:Models, Chemical; D008958:Models, Molecular; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D011874:Radiometry / Q000379:methods*; D012399:Rotation