1 / 12

Development of Electrically Conductive Microfibers Using Electrospinning Techniques

This research focuses on creating electrically conductive microfibers through electrospinning a composite solution of polyvinylidene fluoride (PVDF) with multi-walled carbon nanotubes (MWCNTs). By varying the concentrations of polymer and solvent, we aim to optimize fiber properties. The team uses advanced techniques such as Raman Spectroscopy to analyze the successful embedding of MWCNTs in PVDF, indicated by characteristic peaks. Challenges addressed include solubility, viscosity, and nanotube dispersal, with ongoing investigations to enhance fiber conductivity.

sophie
Télécharger la présentation

Development of Electrically Conductive Microfibers Using Electrospinning Techniques

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Polymers!!!Nanotubes!!! Matt Montgomery Kris Behler, Mentor Dr. Yuri Gogotsi, Advisor

  2. Method • Electrospin polymer + nanotube Objective • Electrically conductive micro-fibers

  3. Electrospinning http://www.che.vt.edu/Wilkes/electrospinning/Slide1.JPG

  4. Concentrations • Polymer (≤ 30%) • Solvent (≥ 70%) • Multi-walled Carbon Nanotubes (≈ 0.1% to 0.02%)

  5. PVDF pellets Polymer: • (PVDF= Polyvinylidene-fluoride) Solvent: • (DMA = Dimethyl-aniline) • (DMF = Dimethyl-formamide) Our solutions

  6. Catalysts • Multiwalled Carbon Nanotubes Average diameter between 10 and 20 nanometers TEM image Computer model of MWCNT www.thomas-swan.co.uk/ pages/nano_images.html

  7. Problems • Solubility of PVDF • Viscosity / Solidification • Nanotube dispersal

  8. Fiber Collection plate (copper plate with aluminum foil wrapped over it) Heat lamps to keep solution from solidifying Our electrospinningapparatus

  9. Fibers • Do they contain carbon nanotubes? • Are they more conductive? More of our fibers Our electrospun fibers

  10. Raman Spectroscopy Standard carbon nanotube signature

  11. Carbon nanotubes successfully embedded in PVDF! Raman Spectra shows characteristic peaks • 1330 cm-1 D-band • 1430 cm-1 PVDF peak • 1584 cm-1G-Band λ = 633 nm, 500x mag, 500sec Slide courtesy of Kris Behler

  12. Research continues.

More Related