Design and testing of high-density polyethylene nanocomposites filled with lead oxide micro- and nano-particles: Mechanical, thermal, and morphological properties
This research discusses the mechanical behavior and the microstructure of high-density polyethylene (HDPE)-based composites, manufactured using the melt-mixing and thermal-pressing techniques, where HDPE is mixed with various percentages of either bulk lead monoxide (bulk PbO) or PbO nanoparticles (PbO-NPs) acting as fillers. The scanning electron microscope and the field emission transmission electron microscope were utilized to identify the morphology of polymeric composites. Both showed the proper dispersion of PbO in the HDPE matrix without substantial agglomerations. The effect of PbO on the thermal behavior of the HDPE was studied using the thermogravimetric analysis. Tensile tests were implemented to find out how the mechanical characteristics of the composites were affected. Yield stress, % elongation at break, stiffness, tensile energy (toughness), ultimate tensile strength, and ultimate tensile strain were elucidated in this work. The values of stiffness, ultimate tensile strength, and yield stress increased by increasing either the bulk PbO or PbO-NPs' loading up to 40.0 wt % with reference to the hosting matrix. The values of ultimate tensile strain, tensile energy, and % elongation at break of the assembled composites diminished dramatically by increasing the filler's content from 10.0 to 50.0 wt %. Besides, composites with PbO-NPs as a filler were identified as having higher mechanical characteristics than those with bulk PbO for the same wt %. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47812.
Faculty of Dentistry
Physical Sciences, General Materials Science, General Chemistry
Indexed in Scopus
Indexed in Web Of Science
HDPE nanocomposites, lead oxide nanoparticles, mechanical properties, structural properties, thermal stability
Mahmoud, Mohamed E.; El-Khatib, Ahmed M.; El-Sharkawy, Rehab M.; Rashad, Amal R.; Badawi, Mohamed S.; and Gepreel, Mohamed A., "Design and testing of high-density polyethylene nanocomposites filled with lead oxide micro- and nano-particles: Mechanical, thermal, and morphological properties" (2019). Faculty of Dentistry. 76.