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Superhydrophobic behavior of electrospun nanofibers with variable additives

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dc.contributor.advisor Asmatulu, Ramazan en_US
dc.contributor.author Ceylan, Muhammet en_US
dc.date.accessioned 2010-09-01T15:12:18Z
dc.date.available 2010-09-01T15:12:18Z
dc.date.issued 2009-12 en_US
dc.identifier.other t09056 en_US
dc.identifier.uri http://hdl.handle.net/10057/2535
dc.description Thesis (M.S.)--Wichita State University, College of Engineering, Dept. of Mechanical Engineering en_US
dc.description.abstract This report presents the hydrophobic (90<Ѳ<150) and superhydrophobic (150<Ѳ<180) behaviors of electrospun fibers in the presence and absence of various inclusions. The research on superhydrohobicity has accelerated around the globe and many researchers have been taking keen interests in fabrication of superhydrophobic materials, using several methods, such as sol-gel, vapor deposition, plasma treatment, surface etching and layer by layer assembly. In the present research, polystyrene (PS) and polyvinyl chloride (PVC) fibers with diameters between 200 nm and 7.60 µm were fabricated by electrospinning technique, and then surface morphology and superhydrohobicity of these electrospun nanofibers were investigated. The results indicate that the water contact angle of the nanofiber surfaces goes up to 165° based on the fiber diameter, type of materials and surface porosity/roughness. Additives such as graphene, surfactant and titanium dioxide (2TiO) nanoparticles (nano powders) ranging from 10-25 nm were added into the same polymers (PVC, PS) and investigated to determine their performances. Both heat treatment and surface treatment were also applied to the fabricated fibers. The results with the additives indicate that the water contact angle is even further increased up to 178°. This may be because of the nanoscale voids (entrapped air) in the pores and surface energy of the nanofiber surface. These higher contact angle nanomaterials can have various industrial applications, such as non-wettable fabric, antibacterial surface, low friction devices, MEMS, NEMS, microfluidics and nanofluidics. en_US
dc.format.extent xiii, 58 p. en_US
dc.format.extent 2186702 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en_US
dc.publisher Wichita State University en_US
dc.title Superhydrophobic behavior of electrospun nanofibers with variable additives en_US
dc.type Thesis en_US

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