Theses and Dissertations

Date of Award

12-2020

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Chemistry

First Advisor

Dr. Mohammed Jasim Uddin

Second Advisor

Dr. Karen Lozano

Third Advisor

Dr. Javier Macossay-Torres

Abstract

Nanofibers of Poly (ethylene oxide), PEO, Poly (vinylpyrrolidone) PVP, Co-nanofiber of PEO-PVP and PEO nanocomposite of various Fullerene compositions were prepared by dissolving PEO, PVP and Fullerene in water. The Fullerene nanoparticles were added to the PEO solutions, the mixtures were homogenized under high power sonication. The PEO solutions, PVP solutions, the co-polymer solutions of PEO-PVP and the PEO -Fullerene solutions were centrifugally spun using Force spinning™ machine. The obtained nanofibers and the nanocomposites were subjected to FTIR analysis, Raman analysis and various heating and cooling cycles with heating and cooling rates ranging from 10C/min to 600C/min using differential scanning calorimetry (DSC 214). The obtained nanofibers and nanocomposites were also subjected to Thermogravimetry Analysis(TGA). The research is focused on the effect of heating and cooling rates, phase transitions of PEO nanofibers and their co-nanofibers due to effects of various heating and cooling rates and the spectroscopic investigations on these polymer- based nanofibers.

Comments

Copyright 2020 Omosola S.Oriretan. All Rights Reserved.

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