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Engineering bioactive MWCNT-reinforced hydroxyapatite coatings on Ti29Nb5Zr alloy by plasma electrolytic oxidation method: A comprehensive approach to dental implant surface optimization
Journal of Alloys and Compounds ( IF 5.8 ) Pub Date : 2024-09-04 , DOI: 10.1016/j.jallcom.2024.176339
Mahendran Logesh , Nguyen Khanh Toan , Sang-Gun Ahn , Han-Cheol Choe
Journal of Alloys and Compounds ( IF 5.8 ) Pub Date : 2024-09-04 , DOI: 10.1016/j.jallcom.2024.176339
Mahendran Logesh , Nguyen Khanh Toan , Sang-Gun Ahn , Han-Cheol Choe
Titanium-niobium-zirconium (TiNbZr) alloys represent a promising class of newly developed titanium-based biomaterials, engineered to exhibit superior properties for biomedical applications. This study investigates the influence of hydroxylated multi-walled carbon nanotubes (MWCNTs) on the surface properties of hydroxyapatite coatings prepared by the plasma electrolytic oxidation (PEO) method for implant applications. The optimal concentration of MWCNTs in the PEO coating was determined based on the superior surface, electrochemical, and biological properties obtained. The incorporation of MWCNTs led to an enhancement in surface roughness from Ra 0.06 ± 0.02 to Ra 0.618 ± 0.03 µm, improved wettability with a decrease in contact angle from 63.03° ± 1.1–28.29° ± 0.07, and a reduction in elastic modulus from 77.20 ± 2.26 GPa to 54.50 ± 2.22 GPa. Furthermore, electrochemical corrosion resistance analysis revealed an increase in inner passivation resistance up to 2.24 × 10 ×7 Ω.cm2 with the addition of MWCNTs. Antibacterial activity analysis demonstrated that the optimal concentration of MWCNTs resulted in a 3.1-fold and 2.7-fold reduction in E. coli and S. aureus bacteria, respectively, compared to uncoated samples. Cell viability against MC3T3-E1 cells showed a 25 % higher viability with MWCNTs than uncoated substrates.
中文翻译:
通过等离子体电解氧化法在 Ti29Nb5Zr 合金上工程生物活性 MWCNT 增强羟基磷灰石涂层:牙种植体表面优化的综合方法
钛铌锆 (TiNbZr) 合金代表了一类新开发的有前途的钛基生物材料,经过精心设计,可在生物医学应用中展现出卓越的性能。本研究研究了羟基化多壁碳纳米管(MWCNT)对通过等离子体电解氧化(PEO)方法制备的植入应用羟基磷灰石涂层表面性能的影响。 PEO 涂层中多壁碳纳米管的最佳浓度是根据所获得的优异的表面、电化学和生物性能确定的。多壁碳纳米管的加入使表面粗糙度从 Ra 0.06 ± 0.02 提高到 Ra 0.618 ± 0.03 µm,润湿性提高,接触角从 63.03° ± 1.1–28.29° ± 0.07 降低,弹性模量从 77.20 降低± 2.26 GPa 至 54.50 ± 2.22 GPa。此外,电化学耐腐蚀性分析表明,随着MWCNT的添加,内部钝化电阻增加至2.24×10×7Ω.cm2。抗菌活性分析表明,与未涂覆的样品相比,MWCNT 的最佳浓度可使大肠杆菌和金黄色葡萄球菌分别减少 3.1 倍和 2.7 倍。多壁碳纳米管对 MC3T3-E1 细胞的细胞活力比未涂层基材高 25%。
更新日期:2024-09-04
中文翻译:
通过等离子体电解氧化法在 Ti29Nb5Zr 合金上工程生物活性 MWCNT 增强羟基磷灰石涂层:牙种植体表面优化的综合方法
钛铌锆 (TiNbZr) 合金代表了一类新开发的有前途的钛基生物材料,经过精心设计,可在生物医学应用中展现出卓越的性能。本研究研究了羟基化多壁碳纳米管(MWCNT)对通过等离子体电解氧化(PEO)方法制备的植入应用羟基磷灰石涂层表面性能的影响。 PEO 涂层中多壁碳纳米管的最佳浓度是根据所获得的优异的表面、电化学和生物性能确定的。多壁碳纳米管的加入使表面粗糙度从 Ra 0.06 ± 0.02 提高到 Ra 0.618 ± 0.03 µm,润湿性提高,接触角从 63.03° ± 1.1–28.29° ± 0.07 降低,弹性模量从 77.20 降低± 2.26 GPa 至 54.50 ± 2.22 GPa。此外,电化学耐腐蚀性分析表明,随着MWCNT的添加,内部钝化电阻增加至2.24×10×7Ω.cm2。抗菌活性分析表明,与未涂覆的样品相比,MWCNT 的最佳浓度可使大肠杆菌和金黄色葡萄球菌分别减少 3.1 倍和 2.7 倍。多壁碳纳米管对 MC3T3-E1 细胞的细胞活力比未涂层基材高 25%。