Structure-dielectric property relationship in polypropylene/multi-element oxide nanocomposites

Azmi, A., Lau, K. Y., Ahmad, N. A., Abdul-Malek, Z., Tan, C. W., Ching, K. Y. ORCID: https://orcid.org/0000-0002-1528-9332 and Vaughan, A. S. (2021) Structure-dielectric property relationship in polypropylene/multi-element oxide nanocomposites. IEEE Transactions on Nanotechnology, 20. pp. 377-385. ISSN 1941-0085 doi: 10.1109/TNANO.2021.3076663

Abstract/Summary

This paper reports on an investigation into the effects of different multi-element oxide nanofillers on the structure and dielectric properties of polypropylene (PP)-based nanocomposites. Magnesium aluminate (MgAl2O4), calcium carbonate (CaCO3) and surface-modified calcium carbonate (CaCO3T) have been added to the PP to determine their effects on thermal properties, structural changes, dielectric response and breakdown strength. The results show that PP nanocomposites containing MgAl2O4 possess lowered breakdown strength compared to unfilled PP. In contrast, adding CaCO3 to PP results in a higher breakdown strength of the nanocomposites compared to nanocomposites containing MgAl2O4. Meanwhile, nanocomposites containing CaCO3T possess the highest breakdown strength among the systems considered. Possible mechanisms governing these dielectric property changes under alternating current and direct current electric fields are discussed.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/102025
Identification Number/DOI	10.1109/TNANO.2021.3076663
Refereed	Yes
Divisions	University of Reading Malaysia
Publisher	IEEE
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