Studies on characteristics and corrosion behaviour of chitosan/eudragit RS100 bilayer film coated Ti-6Al-4V

IF 0.5 4区 工程技术 Q4 CHEMISTRY, APPLIED Indian Journal of Chemical Technology Pub Date : 2023-01-01 DOI:10.56042/ijct.v30i4.69328
K. Shreevani, B. Narayana, B. Sarojini, A. Ganesha, B. Praveen, B. Devendra, Sushmitha
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引用次数: 1

Abstract

In the present study, implant material Ti-6Al-4V has been coated with eudragit (EU) and chitosan (CH) polymers to enhance surface properties. The deposition of polymer coating has covered the surface cracks to a significant level and the fact has been confirmed by FE-SEM coupled with EDAX wherein the atomic percentage of Ti (99.90%) in non-coated surface has been decreased markedly to 0.42% after coating. Scratch resistance and adhesion power of bilayer coating has been increased as indicated by the higher critical loads Lc 1 (16.71 N), Lc 2 (17.56 N), Lc 3 (17.96 N) when a progressive load of 1 N to 20 N is applied over the coated surface. Further, Electrochemical impedance spectroscopy (EIS) and potentiodynamic-polarization studies have shown that the value of polarization resistance is inversely proportional to the corrosion rate. Thus decrease in the corrosion rate from 107.5×10 -2 (mm year -1 ) for the non-coated alloy to 2.88×10 -2 (mm year -1 ) for CH/EU coating demonstrated that coating enhanced the corrosion resistance of the alloy in the physiological condition. The in vitro antibacterial test conducted against S. aureus, B. subtilis, P. vulgaris and P. auregenosa has shown a significant inhibition zone of 9 mm, 6 mm, 7 mm and 10 mm, respectively, thus indicating the possible application of the polymeric coating material on the dental implants.
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Ti-6Al-4V包覆壳聚糖/环氧树脂RS100双层膜的特性及腐蚀行为研究
在本研究中,植入材料Ti-6Al-4V被涂覆了eucragit (EU)和壳聚糖(CH)聚合物,以提高其表面性能。聚合物涂层的沉积使表面裂纹得到了很大程度的覆盖,FE-SEM结合EDAX证实了这一事实,涂层后未涂层表面的Ti原子率(99.90%)明显降低到0.42%。当在涂层表面施加1 ~ 20 N的累加载荷时,涂层的临界载荷Lc 1 (16.71 N)、Lc 2 (17.56 N)、Lc 3 (17.96 N)较高,表明涂层的抗划伤性和附着力有所提高。此外,电化学阻抗谱(EIS)和电位动力学极化研究表明,极化电阻的值与腐蚀速率成反比。腐蚀速率从未涂覆合金的107.5×10 -2 (mm -1)降低到CH/EU涂层的2.88×10 -2 (mm -1),说明在生理条件下,涂层增强了合金的耐蚀性。对金黄色葡萄球菌、枯草芽孢杆菌、寻常假单胞菌和金黄色葡萄球菌的体外抑菌试验显示,其抑菌带分别为9 mm、6 mm、7 mm和10 mm,表明该高分子涂层材料在种植体上的应用前景广阔。
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来源期刊
Indian Journal of Chemical Technology
Indian Journal of Chemical Technology 工程技术-工程:化工
CiteScore
0.90
自引率
20.00%
发文量
17
审稿时长
6-12 weeks
期刊介绍: Indian Journal of Chemical Technology has established itself as the leading journal in the exciting field of chemical engineering and technology. It is intended for rapid communication of knowledge and experience to engineers and scientists working in the area of research development or practical application of chemical technology. This bimonthly journal includes novel and original research findings as well as reviews in the areas related to – Chemical Engineering, Catalysis, Leather Processing, Polymerization, Membrane Separation, Pharmaceuticals and Drugs, Agrochemicals, Reaction Engineering, Biochemical Engineering, Petroleum Technology, Corrosion & Metallurgy and Applied Chemistry.
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