Abstract
Surface modification of metallic implants is often required to facilitate positive interaction between the implant and the surrounding hard tissue. In this study, a polymer-ceramic composite coating of polylactic acid/hydroxyapatite (PLA/HA) was successfully deposited on a Co–Cr–Mo alloy by the dip coating method in chloroform suspension at room temperature. The effect of various PLA/HA dipping layers was studied and the dip coating process parameters were optimized in order to obtain a homogeneous, crack free, densely packed and adhesive coating. It is found that PLA/HA-coated substrate with 3 dipping layers were denser and less crack sensitive compared to 6 dipping layers. Although it is hypothesized that a coarser coated surface helps to facilitate ingrowth of osseous tissue in human body, but current findings show opposite manners due to the fact that a higher corrosion rate was obtained. The coated substrate with 6 dipping layers also were found more profound to micro-cracks and delamination with a lower microhardness value compared to coated substrate with 3 dipping layers.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Liu S et al (2020) Current applications of poly (lactic acid) composites in tissue engineering and drug delivery. Compos B Eng 199:108238
Mas-Ayu H et al (2019) Improving biocompatibility of cobalt based alloy using chemical etching and mechanical treatment. Materwiss Werksttech 50:254–259
Suci DAW et al (2020) Implant surface modification strategies through antibacterial and bioactive components. In: Biopolymer-based formulations. Elsevier, pp 647–673
Mas-Ayu H et al (2018) In-vitro biocompatibility study of hydroxyapatite coated on Co-Cr-Mo with oxide interlayer. J Teknol 80(1):35–42
Zuchuat J et al (2020) CoCrMo alloy as biomaterial for bone reconstruction in oral and maxillofacial surgery: a scoping review. J Oral Res 9:212–219
Harun WSW et al (2018) A comprehensive review of hydroxyapatite-based coatings adhesion on metallic biomaterials. Ceram Int 44(2):1250–1268
Mohd YMF et al (2014) Dipcoating of poly (ε-caprolactone)/hydroxyapatite composite coating on Ti6Al4V for enhanced corrosion protection. Surf Coat Tech 245:102–107
Yang C, Guo YK, Zhang ML (2010) Thermal decomposition and mechanical properties of hydroxyapatite ceramic. Trans Nonferr Metal Soc 20(2):254–258
Bandyopadhyay A et al (2019) Additively manufactured calcium phosphate reinforced CoCrMo alloy: bio-tribological and biocompatibility evaluation for load-bearing implants. Addit Manuf 28:312–324
Salerno A et al (2014) Macroporous and nanometre scale fibrous PLA and PLA–HA composite scaffolds fabricated by a bio safe strategy. RSC Adv 4(106):61491–61502
Mas-Ayu H et al (2014) Influence of carbon concentrations in reducing Co and Cr ions release in cobalt-based implant: a preliminary report. Adv Mat Res 62–466
Wang Q, Zhang L, Dong J (2010) Effects of plasma nitriding on microstructure and tribological properties of CoCrMo alloy implant materials. J Bionic Eng 7(4):337–344
Acknowledgements
The authors would like to thank the Ministry of Higher Education for providing financial support under Fundamental Research Grant Scheme (FRGS) No. FRGS/1/2018/TK03/UMP/03/1 (University reference RDU190130) and Universiti Malaysia Pahang for laboratory facilities as well as additional financial support under Internal Research Grant RDU192309. Special thanks to Universiti Teknologi Malaysia (UTM) Skudai for providing additional financial assistance under CRG 26.0 grant programme.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2022 The Author(s), under exclusive license to Springer Nature Switzerland AG
About this chapter
Cite this chapter
Hassan, M.A., Zamri, Z., Daud, R., Redzuan, N., Sudin, I. (2022). The Effect of PLA/HA Coating Thickness on Crack Formation and Corrosion Performance. In: Ismail, A., Dahalan, W.M., Öchsner, A. (eds) Advanced Materials and Engineering Technologies. Advanced Structured Materials, vol 162. Springer, Cham. https://doi.org/10.1007/978-3-030-92964-0_6
Download citation
DOI: https://doi.org/10.1007/978-3-030-92964-0_6
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-92963-3
Online ISBN: 978-3-030-92964-0
eBook Packages: EngineeringEngineering (R0)