Title: Hybridization of Carbon Nanotube-Glass Fiber Based Hierarchical Composites Using Electrophoretic Deposition
Authors: Dae Han Sung, Sagar M. Doshi, Andrew N. Rider, and Erik T. Thostenson
Abstract: Hybridization of nanomaterials such as carbon nanotubes with advanced textiles such as glass and carbon fiber enables the creation of hierarchical composites. Traditionally, the hierarchical composites were manufactured using chemical vapor deposition, which is an expensive and energy intensive process and may cause damage to the textiles due to extreme temperatures involved. In this research, we discuss the characterization and applications of hierarchical composites manufactured using a scalable, aqueous dispersion based electrophoretic deposition process. The carbon nanotubes (CNTS) are functionalized with a dendritic polymer polyethylenimine (PEI) which gives the nanotubes a positive charge in the aqueous dispersion. Using electric field, the positively charged PEI functionalized carbon nanotubes are deposited on the cathode. The EPD process is inherently scalable since no harsh chemicals are used and the process can be performed at room temperature. Along with being a scalable process, the key advantages of this process are its ability to coat conductive and non-conductive substrates and the ability to control the thickness of carbon nanotube coating on the surface of the fibers by varying process parameters such as time of deposition, functionalization of carbon nanotubes, electric field strength and concentration of carbon nanotubes. The mechanism of film formation using EPD is characterized and the influence of processing parameters on the film growth is investigated. A variety of fabrics such as cotton, wool, nylon, polyester and glass fiber are coated.
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Conference: SAMPE 2019 - Charlotte, NC
Publication Date: 2019/05/20
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