Study of Morphological, Mechanical and Electrical properties of Electrospun Poly(lactic acid) Nanofibers incorporated with Multiwalled Carbon Nanotubes as a Function of Thermal Bonding.

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dc.contributor.advisorDr. Saad Khan, Committee Memberen_US
dc.contributor.advisorDr. Russell Gorga, Committee Chairen_US
dc.contributor.advisorDr. Laura Clarke, Committee Co-Chairen_US
dc.contributor.authorRamaswamy, Sangeethaen_US
dc.date.accessioned2010-04-02T17:57:27Z
dc.date.available2010-04-02T17:57:27Z
dc.date.issued2009-08-11en_US
dc.degree.disciplineTextile Engineeringen_US
dc.degree.levelthesisen_US
dc.degree.nameMSen_US
dc.description.abstractRAMASWAMY SANGEETHA. Study of Morphological, Mechanical and Electrical properties of Electrospun Poly (lactic acid) Nanofibers incorporated with Multiwalled Carbon Nanotubes as a Function of Thermal Bonding. (Under the direction of Dr. Russell E. Gorga and Dr Laura A. Clarke). This work aims at enhancing the properties of electrospun poly (lactic) acid (PLA) nanofibers incorporated with various loading of multiwalled carbon nanotubes (MWNT) using the process of thermal bonding. Thermal bonding of the electrospun fibers improved the fiber-fiber bonds. Tensile strength of the nano-composites increased as a function of the bonding temperature. The modulus increased at lower bonding temperatures as the mat became more coherent and reduced at higher bonding temperatures as the stiffness of the mat decreased. A cold crystallization phenomenon was seen in the PLA nanofibers when bonded near the Tm, which lead to a sharp increase in tensile strength as well as modulus. The effect of thermal bonding on the electrical properties of the nanocomposites was also studied. It was found that the electrical conductance was the highest when the fibers were bonded close to their melting point. The percolative behavior of the nanocomposite mats bonded near the melting point was compared to the as-spun ones and it was found that improvement in the fiber-fiber bonds improved the connectivity of the mat and lowered the percolation threshold and raised the overall conductivity of the mat.en_US
dc.identifier.otheretd-07012009-125800en_US
dc.identifier.urihttp://www.lib.ncsu.edu/resolver/1840.16/656
dc.rightsI 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.subjectelectrospinningen_US
dc.subjectnanofibersen_US
dc.subjectMWNTen_US
dc.subjectcarbon nanotubesen_US
dc.subjectthermal bondingen_US
dc.subjectenhancementen_US
dc.subjectelectricalen_US
dc.subjectmechanicalen_US
dc.titleStudy of Morphological, Mechanical and Electrical properties of Electrospun Poly(lactic acid) Nanofibers incorporated with Multiwalled Carbon Nanotubes as a Function of Thermal Bonding.en_US

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