평형 전기방사에서의 드롭의 동적인 거동

Dynamic Behavior of Droplet in Electrospinning under Equilibrium State

  • 공창숙 (한국해양대학교) ;
  • 이태현 (부산대학교 유기소재시스템공학과) ;
  • 김한성 (부산대학교 유기소재시스템공학과)
  • Kong, C.S. (Research Institute of Marine Science and Technology, Korea Maritime University) ;
  • Lee, T.H. (Department of Organic Material Science and Engineering, Pusan National University) ;
  • Kim, Han-Seong (Department of Organic Material Science and Engineering, Pusan National University)
  • 발행 : 2007.10.30

초록

The electro-spinning is a process in which a jet is ejected by the electrical force which is acting on the droplet and overcoming its surface tension. Unstable jet is ejected under the condition named as Fluctuation that is defined as jet instability. In this study, the dynamic behaviors of a pendant droplet at the exit of the nozzle were investigated to understand the key parameters in the jet instability. The system was developed to control the flow rate of a pendent droplet. Dynamic behaviors of a droplet in electrospinning with the various needle diameters, TCDs (tip-to-collect distance), voltages could be successfully classified into particular steps. Various behaviors of the droplet in electrospinning that may influence the jet instability were investigated.

키워드

참고문헌

  1. A. Formhals, 'Process and Apparatus for Preparing Artifical Threads', U.S. Patent, 1,975,504(1934)
  2. Q. Liu, R. J. De. Wijin, K. D. Groot, and A. C. Blitterswijk, 'Surface Modification of Nano-Apatite by Grafting Organic Polymer', Biomaterials, 1998, 19, 1067-1072 https://doi.org/10.1016/S0142-9612(98)00033-7
  3. J. M. Deitzel, J. D. Klienmeyer, J. K. Hirvonen, and N. C. Beck Tan, 'Controlled Deposition of Electrospun Poly(ethylene oxide) Fibers', Polymer, 2001, 42, 8163-8170 https://doi.org/10.1016/S0032-3861(01)00336-6
  4. G. I. Taylor, 'Electrically Driven Jets', Proc R Soc London Ser A, 1969, 313, 453-475
  5. G. C. Rutledge, M. Y. Shin, S. B. Warner, A. Buer, M. Grimler, and S. C. Ugbolue, 'A Fundamental Investigation of the Formation and Properties of Electrospun Fibers', NTC Annual Report, Project M98-D01, 1999
  6. J. M. Deitzel, J. K. Klienmeyer, D. Harris, and N. C. Beck Tan, 'The Effect of Processing Variables on the Morphology of Electrospun Nanofibers and Textiles', Polymer, 2001, 42, 261-272 https://doi.org/10.1016/S0032-3861(00)00250-0
  7. Y. M. Shin, M. M. Hohman, M. P. Brenner, and G. C. Rutledge, 'Experimental Characterization of Electrospinning the Electrically Forced Jet and Instabilities', Polymer, 2001, 42, 9955-9967 https://doi.org/10.1016/S0032-3861(01)00540-7
  8. P. K. Baumgarten, 'Electrostatic Spinning of Acrylic Microfibers', J Colloid Interf Sci, 1971, 36, 71-79 https://doi.org/10.1016/0021-9797(71)90241-4
  9. C. S. Kong, J. Y. Kim, and H. S. Kim, 'Dynamic Behavior of a Growing Drop at the Exit of a Fine Capillary', Text Sci Eng, 2006, 43(4), 191-195