Thermal and tribo-mechanical properties of high-performance poly(etheretherketone)/reduced graphene oxide nanocomposite coatings prepared by electrophoretic deposition

González Castillo EI, Torres Y, González FJ, Aguilar Rabiela AE, Shuttleworth PS, Ellis GJ, Boccaccini AR (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Journal of Materials Science Springer Verlag (Germany)

DOI: 10.1007/s10853-023-08686-y

Abstract

The thermal stability and degradation, near-to-surface mechanical properties, and scratch resistance and damage mechanism of poly(etheretherketone) (PEEK)/reduced graphene oxide (RGO) nanocomposite coatings are analyzed and discussed in terms of their nanosheet content and microstructure. Although RGO modified the thermal stability and degradation of the polymeric matrix, for instance, by slightly reducing the onset degradation temperature, its addition was not a limiting factor in the PEEK processing. Respecting the microstructural features induced by the nanosheets, the nanocomposite coatings were found to exhibit (i) a partially exfoliated and large-scale co-continuous morphology related to RGO nanosheets whose basal planes were mainly aligned with the coating surface, (ii) a dendritic morphology of PEEK domains related to transcrystallinity, (iii) and irregular domains associated with the deposition of PEEK particles wrapped by the nanosheets. The changes provoked by RGO in the morphology and PEEK crystalline phase influenced the near-to-surface mechanical properties, scratch resistance, and scratch damage mechanism of the nanocomposite coatings. Within this context, the interlayer strength between the nanosheets in the large-scale co-continuous morphology and PEEK transcrystallinity had an important effect. Furthermore, the random-bumpy surface texture formed by the irregular PEEK domains together with the conformal cracking damage mechanism was decisive in the scratch response of the PEEK/RGO nanocomposite coatings. The comprehensive characterization carried out in this work concludes that PEEK/RGO electrophoretic coatings are suitable for a variety of applications requiring tribo-mechanical resistance. Graphical Abstract: [Figure not available: see fulltext.].

Authors with CRIS profile

Eduin Ivan González Castillo Lehrstuhl für Werkstoffwissenschaften (Biomaterialien) Arturo Elias Aguilar Rabiela Lehrstuhl für Werkstoffwissenschaften (Biomaterialien) Aldo Boccaccini Lehrstuhl für Werkstoffwissenschaften (Biomaterialien)

Involved external institutions

Autonomous University of Coahuila / Universidad Autónoma de Coahuila (UAdeC) MX Mexico (MX) Spanish National Research Council / Consejo Superior de Investigaciones Científicas (CSIC) ES Spain (ES) University of Seville / Universidad de Sevilla ES Spain (ES)

How to cite

APA:

González Castillo, E.I., Torres, Y., González, F.J., Aguilar Rabiela, A.E., Shuttleworth, P.S., Ellis, G.J., & Boccaccini, A.R. (2023). Thermal and tribo-mechanical properties of high-performance poly(etheretherketone)/reduced graphene oxide nanocomposite coatings prepared by electrophoretic deposition. Journal of Materials Science. https://dx.doi.org/10.1007/s10853-023-08686-y

MLA:

González Castillo, Eduin Ivan, et al. "Thermal and tribo-mechanical properties of high-performance poly(etheretherketone)/reduced graphene oxide nanocomposite coatings prepared by electrophoretic deposition." Journal of Materials Science (2023).

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