Azari R, Boccaccini AR (2025)
Publication Type: Journal article
Publication year: 2025
Book Volume: 58
Article Number: 105771
DOI: 10.1016/j.surfin.2025.105771
Electrophoretic deposition (EPD) is an advanced shaping technique used for obtaining biomedical coatings at room temperature. This research is intended, for the first time, to investigate the effect of the working temperature on the suspension behavior and quality of bioactive glass-chitosan (BGCS) composite coatings obtained by EPD on metallic substrates. To accomplish this, BGCS coatings were electrophoretically deposited on stainless steel planar foils at five working temperatures; from ambient temperature to below the vaporization point of the solution (∼ 83.1 °C). The successful incorporation of BG particles (∼4 µm) and CS in all coatings was confirmed by FTIR and EDS analyses. A comprehensive study of electrical-physical properties of BGCS suspensions at different temperatures revealed an increasing trend in electrophoretic mobility (µ), suspension conductivity (σ), and current density (J) with temperature rise. However, the zeta potential (ζ), which is a measure of suspension stability, recorded its highest level (43.53 ± 1.48 mV) at 35 °C. Furthermore, at 35 °C, the deposition weight verified the highest deposition yield with the lowest standard deviation (1.29 ± 0.07 mg.cm-2). SEM micrographs showed that BG particles were homogenously distributed in the CS matrix at room temperature. By increasing the temperature to 35 °C the proportion of bioactive particles in the coating grew tremendously, however at temperatures higher than 45 °C the quality of deposited BGCS coatings started to decrease. The BGCS-35 and BGCS-45 coatings exhibited the highest adhesion strength (classes 2 and 3) among other coatings, possibly due to the incorporation of more BG particles and thus a denser and stiffer microstructure. Correspondingly, a temperature of around 35 °C is considered the best working temperature for the deposition of advanced BGCS composite coatings for metallic implants.
APA:
Azari, R., & Boccaccini, A.R. (2025). Effect of processing temperature on electrophoretic deposition (EPD)-derived bioactive composite coatings for metallic bone implants. Surfaces and Interfaces, 58. https://doi.org/10.1016/j.surfin.2025.105771
MLA:
Azari, Rezvan, and Aldo R. Boccaccini. "Effect of processing temperature on electrophoretic deposition (EPD)-derived bioactive composite coatings for metallic bone implants." Surfaces and Interfaces 58 (2025).
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