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26-04-2021 | Brief Communication

Development of multifunctional Si-Ca-PEG-nAg sol–gel implant coatings from calcium-2-ethoxyethoxide

Authors: Zach Gouveia, Hiran Perinpanayagam, Jesse Zhu

Published in: Journal of Coatings Technology and Research | Issue 4/2021

Abstract

Titanium implant success is compromised by microbial biofilms and aseptic loosening. This research aimed to develop robust multifunctional class II organic-inorganic hybrid coatings for implants with osteoconductive and antibacterial properties. 3-Glycidoxypropyltrimethoxysilane was coupled with organic polymer poly(ethylene) glycol-diamine (PEG-NH2) for integration into an inorganic sol backbone composed of tetraethoxysilane and calcium, which was sourced from newly synthesized calcium-2-ethoxyethoxide. Nuclear magnetic resonance and attenuated total reflectance Fourier transform infrared spectroscopy confirmed synthesis of precursors and the structure of coating constituents. Scanning electron microscopy and energy-dispersive X-ray spectroscopy (EDS) demonstrated homogenous coatings, micro-topographical surface features, and apatite-like ex vivo mineralization in simulated body fluid. Tensile adhesion testing demonstrated robust and highly adherent (15.1 ± 3.3 MPa) coatings on titanium substrates. Hybrid coatings imbedded with silver nanoparticles (nAg) significantly inhibited (P < 0.05) Staphylococcus aureus and Escherichia coli planktonic cultures and biofilm formation. These Si-Ca-PEG-nAg hybrid coatings for titanium implants offer robust multifunctional features.

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Title: Development of multifunctional Si-Ca-PEG-nAg sol–gel implant coatings from calcium-2-ethoxyethoxide
Authors: Zach Gouveia
Hiran Perinpanayagam
Jesse Zhu
Publication date: 26-04-2021
Publisher: Springer US
Published in: Journal of Coatings Technology and Research / Issue 4/2021
Print ISSN: 1547-0091
Electronic ISSN: 1935-3804
DOI: https://doi.org/10.1007/s11998-021-00477-x

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