Abstract
Medical composites have a lot of applications in medicine and orthopedic. Biomedical/orthopedic composites belong to biomaterials (Biomaterial can substitute natural tissues in the body and perform their functions). In this research, PLA (Polylactic Acid) and PCL (Polycaprolactone) polymer matrices filled with Mg6Zn alloy and observed the microstructure and electrochemical impedance spectroscopy. PLA and PCL were combined with a ratio of 7:3, 6:4, and 5:5 then dissolved respectively using chloroform. After that, mixed with Mg6Zn with three separate compositions of 5, 10 and 15%, it was then mould into a petri dish until it was dry. The structure was observed using scanning electron microscopy (SEM JEOL, JSM-6390A Japan). The immersion test examined the corrosion rate by observing the change in the pH, weight loss, and solubility of the composite in the simulation body solution using UV-Vis by looking at the specific functional group wavelength absorption area. Uv-Vis Analysis was conducted using Metrohm auto lab spectroelectrochemistry. The The microstructure found that the PLA-PCL-Mg6Zn biocomposite content is homogeneously mixed and uniformly distributed. Corrosion activity found by the immersion test, the reduced mass is not so large that it will last longer for bioabsorbable biomedical applications. 5PLA5PCL10Mg6Zn is an optimal composition because it decreases with pH most a little from the other, although the weight loss is not the least insignificant.
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Acknowledgements
This research was funded by riset and development, Health Ministry of Republic Indonesia. Special thanks to biocompatible & Biomedic research group for support and teamwork. First author of this paper is Aprilia Erryani.
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Erryani, A., Rahmah, A., Asmaria, T., Lestari, F.P., Kartika, I. (2021). Microstructure and Corrosion Behavior of Bioabsorbable Polymer Polylactic Acid-Polycaprolactone Reinforced by Magnesium-Zinc Alloy for Biomedical Application. In: Triwiyanto, Nugroho, H.A., Rizal, A., Caesarendra, W. (eds) Proceedings of the 1st International Conference on Electronics, Biomedical Engineering, and Health Informatics. Lecture Notes in Electrical Engineering, vol 746. Springer, Singapore. https://doi.org/10.1007/978-981-33-6926-9_32
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