10th International Aerosol Conference September 2 - September 7, 2018 America's Center Convention Complex St. Louis, Missouri, USA
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Polymer and Metal Oxides Coating of Multiwalled Carbon Nanotubes by Spray-Assisted Plasma-Enhanced Chemical Vapor Deposition
LAKSHMIPURA RAMACHANDRAIAH HEMANTH, Keita Nishihara, Masaru Kubo, Manabu Shimada, K. Kusdianto, Hiroshima University
Abstract Number: 426 Working Group: Materials Synthesis
Abstract Carbon nanotubes have wide applications in every sector due to the tuneable surface property. The low thermal conductivity and surface oxidization of carbon nanotubes limit their applications. To overcome these problems, surface coating is preferred. The coating is performed by physical, chemical as well as by mechanical methods. The present work details about the coatings on surface of carbon nanotubes by polymers and metal oxides by spray-assisted plasma-enhanced chemical vapor deposition (PECVD). Two different streams containing aerosolized multiwalled carbon nanotubes and vaporized methyl methacrylate or metal alkoxides is sprayed simultaneously into plasma; to develop coated carbon nanotubes on a silica substrate by PECVD. The stoichiometry of polymeric materials and metal oxides with focus on retention of desired nanostructures is evaluated. The effects of process conditions such as pre-treatment of nanotubes, carrier gas, flow parameters are analysed. Developed material is characterized basically by X-ray diffractometer, scanning electron microscopy, transmission electron microscopy, FTIR and by Raman spectroscopy. Coated porous polymeric materials on nanotubes surface with thickness of 100-400 nm are obtained under the controlled reaction conditions with acid pre-treatment. Surface morphology of obtained material reveals un-destructed carbon nanotubes with uniform coating of polymer and metal oxides.