Theses and Dissertations - UTB/UTPA

Date of Award


Document Type


Degree Name

Master of Science (MS)



First Advisor

Dr. Javier Macossay-Torres

Second Advisor

Dr. Narayan G. Bhat

Third Advisor

Dr. Philip DeLassus


Various concentrations of multi-walled carbon nanotubes (MWCNTs) were dispersed in a polystyrene matrix in order to determine the optimal MWCNT concentration that would enhance the thermal properties of the composite. The MWCNTs were dispersed in the polystyrene matrix by high energy sonication and then electrospun. The microstructural characterization such as fiber diameter, fiber orientation, fiber morphology, porosity, cross-section shape, and surface roughness of the nanofibers electrospun from these composites were made by scanning electron microscopy and transmission electron microscopy. Spectroscopic characterization for these nanofibers was conducted using Fourier Transform infrared spectroscopy and Raman spectroscopy was utilized to establish a nanotube/matrix interaction. Thermal characterization such as degradation temperature and glass transition temperature were determined using thermogravimetric analysis and differential scanning calorimetry respectively.


Copyright 2009 Ana V. R. Ybarra. All Rights Reserved.

Granting Institution

University of Texas-Pan American

Included in

Chemistry Commons