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Atmospheric Pressure Plasma Functionalization of Dry-spun Multi-walled Carbon Nanotubes Sheets and its application in CNT-Polyvinyl Alcohol (PVA) Composites

Published online by Cambridge University Press:  31 May 2013

Rachit Malik
Affiliation:
School of Energy, Environment, Biological and Medical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA.
Yi Song
Affiliation:
School of Dynamic Systems, Nanoworld Laboratories, University of Cincinnati, Cincinnati, OH 45221, USA.
Noe Alvarez
Affiliation:
School of Energy, Environment, Biological and Medical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA.
Brad Ruff
Affiliation:
School of Dynamic Systems, Nanoworld Laboratories, University of Cincinnati, Cincinnati, OH 45221, USA.
Mark Haase
Affiliation:
School of Energy, Environment, Biological and Medical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA.
Bolaji Suberu
Affiliation:
School of Dynamic Systems, Nanoworld Laboratories, University of Cincinnati, Cincinnati, OH 45221, USA.
Andrew Gilpin
Affiliation:
School of Energy, Environment, Biological and Medical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA.
Mark Schulz
Affiliation:
School of Dynamic Systems, Nanoworld Laboratories, University of Cincinnati, Cincinnati, OH 45221, USA.
Vesselin Shanov
Affiliation:
School of Energy, Environment, Biological and Medical Engineering, University of Cincinnati, Cincinnati, OH 45221, USA.
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Abstract

Robust sheets comprised of aligned multi-walled carbon nanotubes (MWNTs) drawn from spin-able carbon nanotube (CNT) arrays were developed. Surface modification of these sheets was carried out via an atmospheric pressure plasma jet as a post-treatment process. Helium/Oxygen plasma was utilized to produce carboxyl (-COO-) functionality on the surface of the nanotubes. Raman Spectroscopy, X-Ray Photoelectron Spectroscopy (XPS) and Fourier Transform Infrared (FTIR) Spectroscopy confirm the presence of functional groups on the nanotube surface. Composite laminates made from functionalized CNT sheets in a polyvinyl alcohol (PVA) matrix demonstrate increase in tensile strength over those made with pristine sheets used as reinforcement material.

Type
Articles
Copyright
Copyright © Materials Research Society 2013 

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