Mechanical and physical properties of electrospun nanofibers

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dc.contributor.advisor Xiangwu Zhang, Committee Member en_US
dc.contributor.advisor Russell Gorga, Committee Member en_US
dc.contributor.advisor Alan Tonelli, Committee Member en_US
dc.contributor.advisor Wendy Krause, Committee Chair en_US Zhang, Shu en_US 2010-04-02T17:53:41Z 2010-04-02T17:53:41Z 2009-08-13 en_US
dc.identifier.other etd-07102009-165411 en_US
dc.description.abstract The process of electrospinning was utilized to fabricate randomly aigned nylon6 nanofibers and aligned nylon6 nanofibers. Polymer concentration affecting electrospinning was investigated. This parameter was evaluated using degree of crystallinity by differential scanning calorimetry (DSC) as well as visual images produced by scanning electron microscopy (SEM). DSC data demonstrated that more crystals were formed with lower polymer concentrations; SEM images revealed that slimmer fibers were produced by lower concentrations. The mechanical properties of unoriented fibers and aligned fibers were tested on Instron 5544. The result of tensile tests indicated higher Young’s modulus and tensile strength of aligned nanofibers than that of unaligned fibers. The SEM images at broken edges of fibers illustrated different broken mechanisms of these two forms of nanofibers. The broken mechanism of aligned nanofibers was further confirmed by crystallinity parameters obtained from DSC and fiber diameter shown from SEM images. en_US
dc.rights I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dis sertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. en_US
dc.subject mechanical properties en_US
dc.subject aligned nanofibers en_US
dc.subject electrospinning en_US
dc.title Mechanical and physical properties of electrospun nanofibers en_US MS en_US thesis en_US Textile Chemistry en_US

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