Presentation Title

Carbon Nanotube Reinforced Carbon Fiber

Faculty Mentor

David Kisailus

Start Date

17-11-2018 2:30 PM

End Date

17-11-2018 2:45 PM

Location

C302

Session

Oral 3

Type of Presentation

Oral Talk

Subject Area

engineering_computer_science

Abstract

Recent studies suggest that embedding single walled carbon nanotubes (SWNTs) in polyacrylonitrile (PAN) fibers can act as a template for graphitic domains to form, reducing the temperature required for graphitization, as well as enhance the strength of the resulting carbon fiber. Applying this method to an industrial scale will result in stronger and cheaper carbon fibers for use in fiber-reinforced composites. We investigate this theory by electrospinning PAN embedded with 0.05-0.2 wt% SWNT and annealing the resulting nanofibers so they graphitize. Results from Raman spectroscopy, Transmission Electron Microscopy and Differential Scanning Calorimetry, show that embedded SWNT’s do not decrease the graphitization temperature or increase the degree of graphitization. We expect tensile testing to show an increasing strength proportional to SWNT concentration that plateaus when the SWNT concentration becomes too high. The nanotubes could interfere with the ability of neighboring polymer chains to react with each other during graphitization, resulting in a more defective structure.

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Nov 17th, 2:30 PM Nov 17th, 2:45 PM

Carbon Nanotube Reinforced Carbon Fiber

C302

Recent studies suggest that embedding single walled carbon nanotubes (SWNTs) in polyacrylonitrile (PAN) fibers can act as a template for graphitic domains to form, reducing the temperature required for graphitization, as well as enhance the strength of the resulting carbon fiber. Applying this method to an industrial scale will result in stronger and cheaper carbon fibers for use in fiber-reinforced composites. We investigate this theory by electrospinning PAN embedded with 0.05-0.2 wt% SWNT and annealing the resulting nanofibers so they graphitize. Results from Raman spectroscopy, Transmission Electron Microscopy and Differential Scanning Calorimetry, show that embedded SWNT’s do not decrease the graphitization temperature or increase the degree of graphitization. We expect tensile testing to show an increasing strength proportional to SWNT concentration that plateaus when the SWNT concentration becomes too high. The nanotubes could interfere with the ability of neighboring polymer chains to react with each other during graphitization, resulting in a more defective structure.