- Collection:
- Atlanta University and Clark Atlanta University Theses and Dissertations
- Title:
- Preparation and characterization of Poly (Ethylene oxide) (MW 8 K and 20K)/ Silica nanoparticle composites, 2015
- Creator:
- Almutairi, Wafa Ayidh
- Date of Original:
- 2010/2019
- Subject:
- Degrees, Academic
Dissertations, Academic - Location:
- United States, Georgia, Fulton County, Atlanta, 33.749, -84.38798
- Medium:
- theses
dissertations - Type:
- Text
- Format:
- application/pdf
- Description:
- Polymeric nanocomposites of poly(ethylene oxide) (PEO) and silica nanoparticle (Si02) were prepared by solution blending using dichloromethane. The goal of the study was to understand the effect of the silica nanoparticle on the morphology of poly(ethylene oxide) and the ability of the poly(ethylene oxide) to disperse the nanoparticle within the matrix. The study focused on the dispersion of the silica nanoparticle (20 run) as filler into poly(ethylene oxide) of molecular weights 8K and 20K. The nanocomposite products were powders.The products were characterized by Fourier Transform Infrared Spectroscopy, X-ray Diffraction, solid-state nuclear magnetic resonance spectroscopy (13C T1prelaxation rates), scanning electron microscopy and differential scanning calorimetry. Differential scanning calorimetry analysis results of the nanocomposites show thermal properties that are different from the individual components. The results show that the crystallinity is slightly reduced on increasing the Si02 nanoparticle loading. Increasing the SiO2 nanoparticles causes an increase in the Tt p relaxation rate of the PEO 8K suggesting effective dispersion of the nanoparticles within the matrix.Overall, the results suggest that the PEO 8K is better at dispersing the nanoparticles within the matrix compared with the PEO 20K.
Date of award: 12/1/2015
Degree type: thesis
Degree name: Master of Science (MS)
Granting institution: Clark Atlanta University
Department: School of Arts and Sciences, Chemistry
Advisor: Khan, Ishrat M.
Advisor: Reed, James
Advisor: Parker, Cass D. - Metadata URL:
- http://hdl.handle.net/20.500.12322/cau.td:2016_almutairi_wafa_a
- Holding Institution:
- Atlanta University Center Robert W. Woodruff Library
- Rights:
-
