Dissertation > Excellent graduate degree dissertation topics show

Modeling and Simulation of Nanofibers Movement in Electrospinning

Author: WangHongLian
Tutor: SunDaoHeng
School: Xiamen University
Course: Precision instruments and machinery
Keywords: Electrospinning Nanofibers Kinematics simulation
CLC: TQ340.6
Type: Master's thesis
Year: 2009
Downloads: 191
Quote: 4
Read: Download Dissertation

Abstract


Electrospinning technique is a simple, low-cost manufacturing and superior performance of electrospinning nanofibers has been widespread concern in the field of flexible electronics, biomedical and MEMS. Electrospinning process instability and uncertainty of the influencing factors, and how to achieve the controlled deposition of electrospinning nanofibers has been the electrospinning technique applied research challenges and crucial. In this paper, the process of electrospinning nanofibers space movement and deposition of the law to conduct research. Collection plate has been deposited nanofibers follow-up to the mechanics of the motor fibers relationship by mathematical modeling simulation the nanofibers space movement and deposition process. First, the establishment of the kinematic model of rigid nanofiber nanofiber motion simulation. The rigid nanofiber prior to contact with the collecting plate, the motion of the fiber contains translational and rotational two parts; rigid fiber contact to the collecting plate, the fiber movement exists only in the form of rotating movement, these two movements form together constitute the electrospinning The process of jet / fiber spiral and whip action process. Carried nanofibers kinematics analysis, discussed various process parameters affect weight. The results showed that the applied voltage and electrode spacing the nanofibers movement influencing factors. With the reduction of the electrode spacing, the movement distance of the rigid nanofiber will be rapidly reduced, by reducing the electrode spacing conducive to achieving a controllable deposition of the fibers, with the near field electrospinning principle. Maxwell viscoelasticity theory to establish of flexible nanofiber kinematics simulation model to analyze the state of motion and the law of deposition of flexible nanofiber space. Fiber movement helical whip dynamic state with electrode spacing, electrode spacing of less than 3mm fiber during exercise the spiral with whip move will significantly reduce conducive to orderly nanofibers; smaller collection plate conductivity fibers, and has been deposited smaller charge conductivity walking speed, the influence of the repulsive force of the fibers has been deposited during deposition of the subsequent nanofiber enhancement, the more difficult to obtain ordered nanofibers; polymer solution concentration increases, the distribution of nanofiber will become more intensive and orderly. To carry out near-field electrospinning experimental study to verify the accuracy of the of flexible nanofiber simulation model. To discuss by electrospinning nanofibers kinematics simulation electrospinning nanofibers space motion state and deposition of the law, and further deepen the understanding of the near-field electrospinning technique provides a good theoretical basis for subsequent applied research .

Related Dissertations

  1. The Preparation and Research of Magnetically Separable TiO2 Photocatalyst Nanofibers,TB383.1
  2. The Study of Preparation and Photocatalytic Activity of TiO2 by Electrospinning,O614.411
  3. Preparation and Characterization of Polymer Micro/Nano Fibers by Laser Melt Electrospinning,TQ340.64
  4. PVA / Polystyrene Composite Nanofibers Preparation and Characterization,TQ340.1
  5. Research on the Design of Scanners for Pipeline Complex Weld Inspection,TG439.9
  6. Fabrication of Biomimetic Tubular Vascular Scaffold and Inducing VSMCs Alignment,R318.08
  7. Preparation of Composite Nanofibers Via Elecrtrospinng,TB383.1
  8. Effects of the High Viscosity Solution and Conductive Particles on Bubble-Electrospinning,TQ340.6
  9. Fabrication of Silk Fibroin Nanofibers Loaded with Vitamin A and E by Green Electrospinning and Evaluative Study on Its Biocompatibility,TQ340.64
  10. Preparation and Characterization of Aligned Ultrafine Fibers by Stable Jet Electrospinning,TQ340.64
  11. Numerical Simulation Study on the Process of Electrospinning and Experimental Verification,TQ340.6
  12. The Study on Controllable Preparation and Performance of Polyurethane Nano-fiber/net,TB383.1
  13. Fabrication of High Flux Thin Film Nanofibrous Composite Ultrafiltration Membrane for Oil Water Treatment,X703
  14. A Kind of Antibacterial Hemostatic Medical Dressing Based on Fish Collagen: Preparation and Properties,TS106.67
  15. Preparing and Property Research of Small Diameter Tapered and Corrugated Vascular Graft,TS106.67
  16. Electrostatic spinning / electret meltblown nonwoven composite materials research process performance,TQ340.6
  17. Doped cobalt ferrite composites and their properties,TB383.1
  18. Electrostatic spinning bimetallic nanoparticles containing polymer nanofibers and environmental remediation applications,TB383.1
  19. Carbon nanotubes in the polymer nanofiber surface assembly and cell activity evaluation,R318.08
  20. Under the action of multi-field coupling mechanism of electrospinning,TQ340.6
  21. Sugar polymer nanofiber membrane preparation and its application in enzyme immobilization,TB383.2

CLC: > Industrial Technology > Chemical Industry > The chemical fiber industry > General issues > Production process
© 2012 www.DissertationTopic.Net  Mobile