Synthesis and Characterization of Carbon Nanofiber Sheet Reinforced Polyvinyl Alcohol (PVA) Composite

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dc.contributor.advisorSun, Li
dc.contributor.committeeMemberSong, Gangbing
dc.contributor.committeeMemberYu, Cunjiang
dc.creatorSun, Sicong
dc.date.accessioned2018-03-05T20:42:24Z
dc.date.available2018-03-05T20:42:24Z
dc.date.createdDecember 2014
dc.date.issued2014-12
dc.date.submittedDecember 2014
dc.date.updated2018-03-05T20:42:24Z
dc.description.abstractCarbon nanofibers (CNF) reinforced polymer composites with lightweight, sustainability of large deformation, oil and corrosion resistance can have positive impact on a wide range of applications. However, this type of composites is still under extensive research due to the difficulties in material handling and processes scale up. To improve processing control and reproducibility for large-scale engineering applications, cost effective carbon nanofibers (CNFs) in form of interconnected porous sheet (Buckypaper) were used as nano fillers. Microstructure of fiber sheet and composite, static mechanical and dynamic mechanical properties of CNF reinforced polyvinyl alcohol (PVA) have been investigated. The effect of dimethyl sulfoxide (DMSO) solvent has been compared to water and shows better improvement in wetting and forming covering layer on the carbon surface. Our sample fabrication technique forms a layered structure where the interfacial debonding between outside PVA layer and inner composite layer can lead to negative impact on static mechanical property. However, the static Mechanical measurements on the composite samples still show significant modulus enhancement that doubles that of pure PVA with the same fabrication process and condition. DMA and DSC measurements show that the unique sandwich-like composite samples have improved storage modulus changing Tg of PVA.
dc.description.departmentMechanical Engineering, Department of
dc.format.digitalOriginborn digital
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/10657/2816
dc.language.isoeng
dc.rightsThe author of this work is the copyright owner. UH Libraries and the Texas Digital Library have their permission to store and provide access to this work. Further transmission, reproduction, or presentation of this work is prohibited except with permission of the author(s).
dc.subjectCarbon nanofibers
dc.subjectPolyvinyl alcohol (PVA)
dc.titleSynthesis and Characterization of Carbon Nanofiber Sheet Reinforced Polyvinyl Alcohol (PVA) Composite
dc.type.dcmiText
dc.type.genreThesis
thesis.degree.collegeCullen College of Engineering
thesis.degree.departmentMechanical Engineering, Department of
thesis.degree.disciplineMaterials Engineering
thesis.degree.grantorUniversity of Houston
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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