High-Temperature Cross-Linking of Carbon Nanotube Multi-Yarn Using Polyvinylpyrrolidone as a Binding Agent
Document Type
Article
Publication Date
3-2015
Abstract
Carbon nanotube (CNT) multi-yarn was cross-linked together at elevated temperatures using a polymer, with the intent of improving their strength and electrical conductivity. They were functionalized using an acid treatment and immersed in a bath of different concentrations (0.5%, 0.1%, and 0.2%) of polyvinylpyrrolidone (PVP). Then they were placed in an oven at various temperatures (180 °C, 200 °C, and 220 °C) in order to cause cross-linking among the carbon nanotube yarns. The physical, chemical, electrical, and mechanical properties of the cross-linked yarns were investigated. The yarns cross-linked at higher temperatures and greater concentrations of PVP had a greater increase in linear mass density, indicating that the cross-linking process had worked as expected. Yarns that were cross-linked at lower temperatures had greater tensile strength and better specific electrical conductivity. Those that were treated with a greater concentration of polymer had a greater ultimate tensile strength. All these results are encouraging first step, but still need further development if CNT yarn is to replace copper wire.
Source Publication
Journal of Nanoscience and Nanotechnology (ISSN 1533-4880)
Recommended Citation
Misak, H. E., Asmatulu, R., Whitman, J., & Mall, S. (2015). High-Temperature Cross-Linking of Carbon Nanotube Multi-Yarn Using Polyvinylpyrrolidone as a Binding Agent. Journal of Nanoscience and Nanotechnology, 15(3), 2283–2288. https://doi.org/10.1166/jnn.2015.9592
Comments
Journal of Nanoscience and Nanotechnology is published by Ingenta.
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