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Davis R, Singh A, Debnath K, Keshri AK, Soares P, Sopchenski L, Terryn HA, Prakash V. Surface modification of biodegradable Mg alloy by adapting µEDM capabilities with cryogenically-treated tool electrodes. THE INTERNATIONAL JOURNAL, ADVANCED MANUFACTURING TECHNOLOGY 2023; 126:4617-4636. [PMID: 37197058 PMCID: PMC10122982 DOI: 10.1007/s00170-023-11395-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 03/29/2023] [Indexed: 05/19/2023]
Abstract
Biomaterials are engineered to develop an interaction with living cells for therapeutic and diagnostic purposes. The last decade reported a tremendously rising shift in the requirement for miniaturized biomedical implants exhibiting high precision and comprising various biomaterials such as non-biodegradable titanium (Ti) alloys and biodegradable magnesium (Mg) alloys. The excellent mechanical properties and lightweight characteristics of Mg AZ91D alloy make it an emerging material for biomedical applications. In this regard, micro-electric discharge machining (µEDM) is an excellent method that can be used to make micro-components with high dimensional accuracy. In the present research, attempts were made to improve the µEDM capabilities by using cryogenically-treated copper (CTCTE) and brass tool electrodes (CTBTE) amid machining of biodegradable Mg AZ91D alloy, followed by their comparison with a pair of untreated copper (UCTE) and brass tool electrodes (UBTE) in terms of minimum machining-time and dimensional-irregularity. To investigate the possible modification on the surfaces achieved with minimum machining-time and dimensional-irregularity, the morphology, chemistry, micro-hardness, corrosion resistance, topography, and wettability of these surfaces were further examined. The surface produced by CTCTE exhibited the minimum surface micro-cracks and craters, acceptable recast layer thickness (2.6 µm), 17.45% improved micro-hardness, satisfactory corrosion resistance, adequate surface roughness (Ra: 1.08 µm), and suitable hydrophobic behavior (contact angle: 119°), confirming improved biodegradation rate. Additionally, a comparative analysis among the tool electrodes revealed that cryogenically-treated tool electrodes outperformed the untreated ones. CTCTE-induced modification on the Mg AZ91D alloy surface suggests its suitability in biodegradable medical implant applications.
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Affiliation(s)
- Rahul Davis
- Department of Mechanical Engineering, Vaugh Institute of Agricultural Engineering and Technology, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, 211007 India
| | - Abhishek Singh
- Department of Mechanical Engineering, National Institute of Technology Patna, Patna, 800005 India
| | - Kishore Debnath
- Department of Mechanical Engineering, National Institute of Technology Meghalaya, Shillong, 793003 India
| | - Anup Kumar Keshri
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Patna, Patna, 801106 India
| | - Paulo Soares
- Department of Mechanical Engineering, Pontifícia Universidade Católica Do Paraná, Curitiba, PR 80215-901 Brazil
| | - Luciane Sopchenski
- Department of Materials and Chemistry, Research Group Electrochemical and Surface Engineering, Vrije Universiteit Brussel, Brussels, Belgium
| | - Herman A. Terryn
- Department of Materials and Chemistry, Research Group Electrochemical and Surface Engineering, Vrije Universiteit Brussel, Brussels, Belgium
| | - Ved Prakash
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Patna, Patna, 801106 India
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Zeng G, Chen W, Liu S, Liu G. New insights into the aggregation and disaggregation between serpentine and pyrite in the xanthate flotation system. J Colloid Interface Sci 2023; 633:243-253. [PMID: 36459931 DOI: 10.1016/j.jcis.2022.11.123] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 11/20/2022] [Accepted: 11/23/2022] [Indexed: 11/27/2022]
Abstract
HYPOTHESIS In xanthate flotation system, the aggregation of serpentine on sulfide minerals significantly weakened their floatability. And it was generally assumed that the electrostatic attraction was of the dominant driver for coating of serpentine slimes. In this paper, the hydrophobic interaction between the "talc-like" cleavage plane of serpentine and the xanthate-hydrophobized surface of sulfide minerals was proposed as the dominated driver. EXPERIMENTS To evaluate the aggregation of serpentine on pyrite surface, a novel experimental protocol was designed, and the aggregation behavior and mechanism in the absence and presence of sodium isobutyl xanthate (SIBX) were explored through in situ optical microscope, micro-flotation, contact angle, zeta potential and FT-IR. Afterwards, the disaggregation mechanism of 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) to the aggregates of serpentine on pyrite surface was revealed. FINDINGS The electrostatic attraction facilitated the slight aggregation of serpentine slimes on bare pyrite surface. The hydrophobic interaction between the "talc-like" plane of serpentine and SIBX-covered pyrite significantly promoted the aggregation between them, which remarkably weakened the floatability of pyrite. The attendance of HEDP anions reversed the surface potential of the octahedral Mg-O layers of serpentine from the positive into the negative, thus to prevent the aggregation of the HEDP-anchored serpentine with the SIBX-covered pyrite via the strong electrostatic repulsion between them. As a result, the disaggregation as well as SIBX flotation separation of pyrite from serpentine was realized. This investigation also provided new insights into the aggregation and disaggregation between serpentine and sulfide minerals during froth flotation.
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Affiliation(s)
- Guangsheng Zeng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Wei Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
| | - Sheng Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Guangyi Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.
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Davis R, Singh A, Debnath K, Soares P, Och SH, Keshri AK, Sopchenski L, Terryn HA. Enhanced abrasive-mixed- µ-EDM performance towards improved surface characteristics of biodegradable Mg AZ31B alloy. THE INTERNATIONAL JOURNAL, ADVANCED MANUFACTURING TECHNOLOGY 2022; 124:2685-2700. [PMID: 36567894 PMCID: PMC9758470 DOI: 10.1007/s00170-022-10673-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 12/06/2022] [Indexed: 05/29/2023]
Abstract
The non-degradable metallic implants, such as bone screws, often act as the source of dysfunction and harmful corrosion products in the aqueous environment inside the human body. Many of these implants are fixed either temporarily or permanently into the human body, and therefore, both need to match tight tolerances with a remarkably finished surface to eradicate burrs or striations. In this regard, the new generation of degradable magnesium (Mg) alloy implants with excellent osseointegration and low elasticity (like that of human bone), minimizing stress shielding, have been identified as potential candidates to challenge surgical procedures reintervention. However, the biological response of an implant toward the cells in vivo can be predominantly regulated by modifying the surface chemistry, morphology, and corrosion characteristics. Powder or abrasive-mixed-micro-electric discharge machining (A-M-µ-EDM) is gaining attention for executing precision machining and achieving a simultaneous surface modification on micro-manufactured surfaces, suitable for clinical applications. Therefore, the present research aimed at improving the surface characteristics of Mg AZ31B alloy via an augmented performance of A-M-µ-EDM by adopting copper and brass-micro-electrodes (C-µ-E and B-µ-E) in association with distinct abrasive particle concentrations (APCs: 0, 1.5, 3, 4.5, and 6 g/l) of bioactive zinc abrasives. To enhance the A-M-µ-EDM capabilities, the experiments were designed with a one-variable-at-a-time (OVAT) strategy, and the trial runs were conducted using different combinations of µ-electrodes and APCs. The superior performance of A-M-µ-EDM was noticed with the fusion of C-µ-E and 3 g/l APC in terms of minimum machining time (MT) and dimensional deviation (DD). The additional outcomes of this work reported favorable improvements in surface morphology, chemistry, topography, wettability, microhardness, and corrosion resistance on the A-M-µ-EDMed sample of interest.
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Affiliation(s)
- Rahul Davis
- Department of Mechanical Engineering, Vaugh Institute of Agricultural Engineering and Technology, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, 211007 India
| | - Abhishek Singh
- Department of Mechanical Engineering, National Institute of Technology Patna, Patna, 800005 India
| | - Kishore Debnath
- Department of Mechanical Engineering, National Institute of Technology Meghalaya, Shillong, 793003 India
| | - Paulo Soares
- Department of Mechanical Engineering, Pontifícia Universidade Católica do Paraná, Curitiba, PR 80215-901 Brazil
| | - Stephan Hennings Och
- Department of Mechanical Engineering, Federal University of Paraná, Curitiba, PR Brazil
| | - Anup Kumar Keshri
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Patna, Patna, 801106 India
| | - Luciane Sopchenski
- Department of Materials and Chemistry, Research Group Electrochemical and Surface Engineering, Vrije Universiteit Brussel, Brussels, Belgium
| | - Herman A. Terryn
- Department of Materials and Chemistry, Research Group Electrochemical and Surface Engineering, Vrije Universiteit Brussel, Brussels, Belgium
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Deng J, Li Y, Xiao Y, Feng K, Lu C, Nie K, Lv X, Xu H, Zhong J. Improved Water Oxidation of Fe 2O 3/Fe 2TiO 5 Photoanode by Functionalizing with a Hydrophilic Organic Hole Storage Overlayer. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Jiujun Deng
- Institute for Energy Research, Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China
| | - Yaxi Li
- Institute for Energy Research, Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China
| | - Ying Xiao
- Institute for Energy Research, Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China
| | - Kun Feng
- Institute of Functional Nano and Soft Materials Laboratory, Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
| | - Cheng Lu
- Institute of Functional Nano and Soft Materials Laboratory, Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
| | - Kaiqi Nie
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoxin Lv
- Institute for Energy Research, Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China
| | - Hui Xu
- Institute for Energy Research, Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China
| | - Jun Zhong
- Institute of Functional Nano and Soft Materials Laboratory, Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
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Li M, Xie K, Peng R, Yuan B, Wang Q, Wang C. Surface Protection and Interface Regulation for Zn Anode via 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid Electrolyte Additive toward High-Performance Aqueous Batteries. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107398. [PMID: 35083869 DOI: 10.1002/smll.202107398] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Indexed: 06/14/2023]
Abstract
Metallic zinc is regarded as an ideal anode material for high-energy aqueous zinc ion batteries owing to its high theoretical capacity, low cost, and abundant resource. However, the undesirable dendrite formation and side reactions occurring on Zn anode during the long-term cycling process seriously restrict the electrochemical performance of the device. Herein, 1-hydroxy ethylidene-1,1-diphosphonic acid (HEDP) is used as electrolyte additive to release the chemical corrosion and hydrogen evolution occurring on Zn anode based on the absorption of HEDP on the Zn foil. Moreover, the strong coordination of HEDP with Zn2+ can balance ion flux at the electrode/electrolyte interface, thus inducing uniform Zn deposition. Thereby, Zn anode exhibits a prolonged cycle life of reversible Zn plating/stripping under different current densities (2800 h at 2 mA cm-2 , 1 mAh cm-2 , and more than 1772 h at 4 mA cm-2 , 1 mAh cm-2 ). Moreover, the cell shows a high average coulombic efficiency of ≈99.6% for ≈600 cycles at 1 mA cm-2 with a cycling capacity of 1 mAh cm-2 . This work provides a facile yet effective method for developing reversible aqueous zinc metal batteries.
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Affiliation(s)
- Min Li
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Kaixuan Xie
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Ruiying Peng
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Boyu Yuan
- Jiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Qinghong Wang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
| | - Chao Wang
- School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu, 221116, P. R. China
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6
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Kania A, Cesarz-Andraczke K, Brytan Z, Reimann Ł, Smolarczyk P. The Influence of Casein Coatings on the Corrosion Behavior of Mg-Based Alloys. MATERIALS 2022; 15:ma15041399. [PMID: 35207938 PMCID: PMC8877020 DOI: 10.3390/ma15041399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/11/2022] [Accepted: 02/12/2022] [Indexed: 01/21/2023]
Abstract
This article discusses the influence of conversion casein coatings with a thickness of about 20 µm on the structure and the corrosion behavior of two magnesium alloys: MgCa2Zn1 and MgCa2Zn1Gd3. Casein is a protein that, along with whey protein, is a part of milk. Casein coatings are appropriate for bone growth because they contain high amounts of calcium and phosphorus. In this work, casein coatings and casein-free coatings were applied on Mg-based alloys using the conversion process. The structure and topography observations were presented. The corrosion behavior was determined by electrochemical and immersion tests, and electrochemical impedance spectroscopy (EIS) in chloride-rich Ringer solution. The obtained results show that conversion casein coatings effectively protect Mg-based alloys against corrosion. This was confirmed by higher corrosion potentials (Ecorr), polarization resistances (Rp) derived from Tafel’s and EIS analysis, as well as low hydrogen release. The volume of hydrogen released after 216 h of immersion for casein coatings applied to MgCa2Zn1 and MgCa2Zn1Gd3 alloys was 19.25 and 12.42 mL/cm2, respectively. The improvement in corrosion resistance of casein coatings was more significant for Mg alloy dopped with gadolinium. The lower corrosion rate of casein conversion coatings is explained by the synergistic effect of the addition of Gd in the Mg-based alloy and the formation of dense, tight conversion casein coatings on the surface of this alloy.
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Affiliation(s)
- Aneta Kania
- Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland; (K.C.-A.); (Z.B.); (P.S.)
- Correspondence: ; Tel.: +48-32-237-2905
| | - Katarzyna Cesarz-Andraczke
- Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland; (K.C.-A.); (Z.B.); (P.S.)
| | - Zbigniew Brytan
- Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland; (K.C.-A.); (Z.B.); (P.S.)
| | - Łukasz Reimann
- Materials Research Laboratory, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland;
| | - Paulina Smolarczyk
- Department of Engineering Materials and Biomaterials, Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18a, 44-100 Gliwice, Poland; (K.C.-A.); (Z.B.); (P.S.)
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7
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Farabi E, Sharp J, Vahid A, Wang J, Fabijanic DM, Barnett MR, Corujeira Gallo S. Novel Biodegradable Zn Alloy with Exceptional Mechanical and In Vitro Corrosion Properties for Biomedical Applications. ACS Biomater Sci Eng 2021; 7:5555-5572. [PMID: 34719916 DOI: 10.1021/acsbiomaterials.1c00763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A series of quaternary Zn-Al-Cu-Li alloys with different weight fractions of Cu, Al, and Li were developed and investigated for potential application in high load bearing bioresorbable implants. The developed alloys provided various fractions of binary and ternary intermetallic structures, which resulted in formation of multiphase microstructures containing a zinc-rich η-phase and LiZn4 and CuZn4 phases. The intermetallic phases promoted grain refinement and a good combination of mechanical properties. The developed Zn-2Al-4Cu-0.6Li alloy showed strength and ductility close to commercially pure Ti alloys with a UTS value of ∼535 MPa and elongation of 37%. The examination of in vitro corrosion behavior of the developed alloys in the modified Hanks' solution revealed suitable corrosion rates (∼38.5 μm/year). The moderate corrosion rate was controlled by the formation of a homogeneous layer of stable corrosion products that protected the alloys from the corrosive environment, particularly in the late stages of immersion. The developed alloys with the most promising mechanical and corrosion properties appeared to be biocompatible to mouse fibroblast cells and human umbilical mesenchymal stem cells, making them suitable candidates for implant applications.
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Affiliation(s)
- Ehsan Farabi
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Julie Sharp
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Alireza Vahid
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Jiangting Wang
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Daniel M Fabijanic
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Matthew R Barnett
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
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8
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Kokilaramani S, Al-Ansari MM, Rajasekar A, Al-Khattaf FS, Hussain A, Govarthanan M. Microbial influenced corrosion of processing industry by re-circulating waste water and its control measures - A review. CHEMOSPHERE 2021; 265:129075. [PMID: 33288282 DOI: 10.1016/j.chemosphere.2020.129075] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 11/18/2020] [Accepted: 11/20/2020] [Indexed: 06/12/2023]
Abstract
In this review article, illustrating the impact and fundamental stuff of microbially influenced corrosion (MIC) along with mechanism, maintenance of materials, human life, wellbeing and inhibitors for cooling towers. Corrosion is a natural mechanism of oxidation and reduction of metal ions by chemical and electrochemical processes and microorganism accumulation. MIC occurs through the aggregation of microbes which can be secreting the extra polymeric substances (EPS) that oxidation of the metal surface. According to the reviews, in the cooling water system, the corrosion begins in the anode charge because its oxidation reaction quickly takes place on the metal surface than the cathode charge. Annihilate the corrosion process needs certain helper substances such as chemical or green compounds, called inhibitors. Corrosion inhibitors typically adopt the adsorption mechanism due to the presence of organic hetero atoms. Chemical and green inhibitors are used to prevent corrosion processes and since ancient times, vast quantities of chemical inhibitors have been used in industry due to their effectiveness and consistency. But still, the chemical inhibitors are more toxic to humans and the environment. Instead of chemical inhibitors, green inhibitors (natural products like plant leaves, flowers, stem, buds, roots and sea algae) are developed and used in industries. Generally, green inhibitors contain natural compounds, high inhibition efficiency, economic, eco- and human-friendly, and strong potential features against corrosion. Thus, a lot of research is ongoing to discover the green inhibitors in various parts of plants and seaweeds.
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Affiliation(s)
- Seenivasan Kokilaramani
- Environmental Molecular Microbiology Research Laboratory, Department of Biotechnology, Thiruvalluvar University, Vellore, 632115, Tamil Nadu, India
| | - Mysoon M Al-Ansari
- Department of Botany and Microbiology, College of Science King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Aruliah Rajasekar
- Environmental Molecular Microbiology Research Laboratory, Department of Biotechnology, Thiruvalluvar University, Vellore, 632115, Tamil Nadu, India.
| | - Fatimah S Al-Khattaf
- Department of Botany and Microbiology, College of Science King Saud University, Riyadh, 11451, Saudi Arabia
| | - AlMalkiReem Hussain
- Department of Botany and Microbiology, College of Science King Saud University, Riyadh, 11451, Saudi Arabia
| | - Muthusamy Govarthanan
- Department of Environmental Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, South Korea
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9
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Zhang W, Li P, Shen G, Mo X, Zhou C, Alexander D, Rupp F, Geis-Gerstorfer J, Zhang H, Wan G. Appropriately adapted properties of hot-extruded Zn-0.5Cu-xFe alloys aimed for biodegradable guided bone regeneration membrane application. Bioact Mater 2020; 6:975-989. [PMID: 33102940 PMCID: PMC7560602 DOI: 10.1016/j.bioactmat.2020.09.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 09/18/2020] [Accepted: 09/18/2020] [Indexed: 12/27/2022] Open
Abstract
Appropriately adapted comprehensive mechanical properties, degradation behavior and biocompatibility are prerequisites for the application of Zn-based biodegradable implants. In this study, hot-extruded Zn-0.5Cu-xFe (x = 0.1, 0.2 and 0.4 wt%) alloys were fabricated as candidates for biodegradable materials for guided bone regeneration (GBR) membranes. The hot-extrusion process and Cu alloying were expected mostly to enhance the mechanical properties, and the Fe alloying was added mainly for regulating the degradation. The microstructure, mechanical properties and in vitro degradation behavior were systematically investigated. The ZnCuFe alloys were composed of a Zn matrix and FeZn13 phase. With increasing Fe content, a higher FeZn13 phase precipitation with larger particles was observed. Since elongation declined significantly until fracture with increasing Fe content up to 0.4 wt%, the ZnCuFe (0.2 wt%) alloy achieved a good balance between mechanical strength and ductility, with an ultimate tensile strength of 202.3 MPa and elongation at fracture of 41.2%. Moreover, the addition of Fe successfully accelerated the degradation of ZnCuFe alloys. The ZnCuFe (0.2 wt%) alloy showed relatively uniform corrosion in the long-term degradation test. Furthermore, extracts of the ZnCuFe (0.2 wt%) alloy showed no apparent cytotoxic effects against L929 fibroblasts, Saos-2 osteoblasts or TAg periosteal cells. The ZnCuFe (0.2 wt%) alloy exhibited the potential to inhibit bacterial adhesion of Streptococcus gordonii and mixed oral bacteria. Our study provides evidence that the ZnCuFe (0.2 wt%) alloy can represent a promising material for the application as a suitable GBR membrane.
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Affiliation(s)
- Wentai Zhang
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Ping Li
- Section Medical Materials Science and Technology, University Hospital Tübingen, Osianderstrasse 2-8, Tübingen, 72076, Germany
| | - Gang Shen
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Xiaoshan Mo
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
| | - Chao Zhou
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Dorothea Alexander
- Department of Oral and Maxillofacial Surgery, University Hospital Tübingen, Osianderstrasse 2-8, Tübingen, 72076, Germany
| | - Frank Rupp
- Section Medical Materials Science and Technology, University Hospital Tübingen, Osianderstrasse 2-8, Tübingen, 72076, Germany
| | - Jürgen Geis-Gerstorfer
- Section Medical Materials Science and Technology, University Hospital Tübingen, Osianderstrasse 2-8, Tübingen, 72076, Germany.,Section Medical Materials Science and Technology, University Hospital Tübingen, Osianderstrasse 2-8, Tübingen, 72076, Germany
| | - Haijun Zhang
- Department of Interventional and Vascular Surgery, The Tenth People's Hospital of Shanghai, Tongji University, Shanghai, 200072, China.,National United Engineering Laboratory for Biomedical Material Modification, Branden Industrial Park, Qihe Economic & Development Zone, Dezhou, Shandong, 251100, China
| | - Guojiang Wan
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China
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10
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Controlling the dissolution of iron through the development of nanostructured Fe-Mg for biomedical applications. Acta Biomater 2020; 113:660-676. [PMID: 32553917 DOI: 10.1016/j.actbio.2020.06.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 06/05/2020] [Accepted: 06/09/2020] [Indexed: 01/25/2023]
Abstract
In the field of biodegradable metallic materials, rapid and non-uniform biodegradation, caused by uncontrolled corrosion rates, is a potential shortcoming. Among the prominent biodegradable materials, magnesium is an attractive choice, however, it is prone to rapid dissolution. In contrast, iron possesses a slow dissolution rate. To approach the middle ground, instead of making magnesium more corrosion-resistant, the less-explored approach of making iron less corrosion-resistant is employed here. In this study, iron, and magnesium, having contrasting corrosion rates, are combined via magnetron co-sputtering. The idea of combinatorial synthesis is employed to fabricate two model nanostructured Fe-Mg samples, i.e. CSFM-1 (Fe85Mg15), and CSFM-2 (Fe65Mg35), exhibiting a controlled and uniform degradation in phosphate-buffer saline solution. The structural characterization of the two samples demonstrates a substitutional solid solution of bcc-Fe-Mg in CSFM-1 and an amorphous short-range-ordered structure in the CSFM-2 sample. Electrochemical investigation shows increased corrosion rates for the two Fe-Mg samples in comparison to pure Fe, validated by relatively active corrosion potentials, higher corrosion current densities, faster anodic dissolution, and lower charge transfer resistances, governed by chemical composition and non-equilibrium nanostructures. Finally, nano-indentation testing of the two samples reveals relatively higher hardness and lower elastic moduli, a suitable combination for bio-implants. STATEMENT OF SIGNIFICANCE: The use of Mg as a biodegradable in-vivo implant material is problematic because of its high dissolution rate and potential for hydrogen gas generation. This is the first time that the idea of combinatorial synthesis is employed to fabricate two model nanostructured Fe-Mg systems, i.e. CSFM-1 (Fe85Mg15), and CSFM-2 (Fe65Mg35), exhibiting a controlled and uniform degradation. The structural characterization of the two systems demonstrates a substitutional solid solution of bcc-Fe-Mg in CSFM-1 and an amorphous short-range-ordered structure in the CSFM-2 system. Electrochemical investigation shows increased biodegradation rates for the two Fe-Mg systems in comparison to pure Fe, validated by relatively active corrosion potentials, higher corrosion current densities, faster anodic dissolution, and lower charge transfer resistances, governed by chemical composition and non-equilibrium nanostructures.
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Palaniappan N, Cole IS, Kuznetsov AE. Experimental and computational studies of graphene oxide covalently functionalized by octylamine: electrochemical stability, hydrogen evolution, and corrosion inhibition of the AZ13 Mg alloy in 3.5% NaCl. RSC Adv 2020; 10:11426-11434. [PMID: 35495345 PMCID: PMC9050467 DOI: 10.1039/c9ra10702a] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 02/27/2020] [Indexed: 01/21/2023] Open
Abstract
Recently, carbon allotropes were shown to play a key role in energy harvesting and as hydrophobic coatings on metal alloys. We have designed octylamine-functionalized graphene oxide materials for energy harvesting and as an anti-corrosion coating for metal alloy protection in a 3.5% NaCl medium. The material has been characterized by different techniques to confirm the structure and composition of the modified graphene oxide sheet: FTIR spectroscopy, XRD, Raman spectroscopy, FESEM and TEM. The electrochemical stability and corrosion inhibition efficiency were studied by electrochemical methods. The electrochemical stability increased with an increase in the applied voltage up to 500 mV, and the corrosion inhibition efficiency was shown to be 73%. The coating stability studies showed a long stability time in the corrosion medium. Octylamine-functionalized graphene oxide chemisorbed onto a Mg alloy surface by non-bonding electron.![]()
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Affiliation(s)
- N. Palaniappan
- School of Chemical Sciences
- Central University of Gujarat
- India
| | - I. S. Cole
- Advanced Manufacturing and Fabrication Research and Innovation
- RMIT University
- Melbourne
- Australia
| | - A. E. Kuznetsov
- Department of Chemistry
- Universidad Técnica Federico Santa Maria
- Santiago
- Chile
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12
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Investigation of zinc‑copper alloys as potential materials for craniomaxillofacial osteosynthesis implants. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 103:109826. [PMID: 31349503 DOI: 10.1016/j.msec.2019.109826] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 05/17/2019] [Accepted: 05/28/2019] [Indexed: 12/22/2022]
Abstract
In this study, zinc‑copper (ZnCu) alloys were investigated regarding their feasibility as absorbable metals for osteosynthesis implants, especially in the craniomaxillofacial area. Mechanical properties and in vitro corrosion behavior of as-rolled Zn-xCu (x = 1, 2 and 4 wt%) alloys were systematically evaluated and screened. The as-rolled Zn4Cu alloy had mechanical properties that were superior to the most absorbable craniomaxillofacial osteosynthesis materials recently reported. The addition of Cu to Zn showed to have no apparent effect on the corrosion rates of the samples. The rolling process on Zn and Zn1Cu resulted in more uniform corrosion than on as-cast counterparts after 28 days immersion. Furthermore, the Zn4Cu alloys exhibited no apparent cytotoxic effect towards L929, TAg or Saos-2 cells. Proliferation rates of TAg and Saos-2 cells were shown to be activated by specific Zn ion concentrations in the as-rolled Zn4Cu alloy extracts. Analysis of in vitro antibacterial properties revealed that the as-rolled Zn4Cu alloy possessed the potential to inhibit biofilm formation of mixed oral bacteria. We conclude that the as-rolled Zn4Cu alloy might be a promising material for fabrication of craniomaxillofacial osteosynthesis implants.
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13
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Miao M, Wang J, Hu W. Synthesis, characterization and inhibition properties of ZnAlCe layered double hydroxide intercalated with 1-hydroxyethylidene-1,1-diphosphonic acid. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.01.056] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Chen Y, Zhang X, Zhao S, Maitz MF, Zhang W, Yang S, Mao J, Huang N, Wan G. In situ incorporation of heparin/bivalirudin into a phytic acid coating on biodegradable magnesium with improved anticorrosion and biocompatible properties. J Mater Chem B 2017; 5:4162-4176. [DOI: 10.1039/c6tb03157a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Drugs were incorporated into a phytic acid coating on Mg by an in situ chemical route for corrosion control and biocompatibility.
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Affiliation(s)
- Yingqi Chen
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- College of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
| | - Xuan Zhang
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- College of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
| | - Sheng Zhao
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- College of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
| | - Manfred F. Maitz
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- College of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
| | - Wentai Zhang
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- College of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
| | - Su Yang
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- College of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
| | - Jinlong Mao
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- College of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
| | - Nan Huang
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- College of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
| | - Guojiang Wan
- Key Laboratory of Advanced Technologies of Materials
- Ministry of Education
- College of Materials Science and Engineering
- Southwest Jiaotong University
- Chengdu
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15
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Puljula E, Vepsäläinen J, Turhanen PA. Synthesis of medronic acid monoesters and their purification by high-performance countercurrent chromatography or by hydroxyapatite. Beilstein J Org Chem 2016; 12:2145-2149. [PMID: 27829921 PMCID: PMC5082484 DOI: 10.3762/bjoc.12.204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 09/19/2016] [Indexed: 12/21/2022] Open
Abstract
We achieved the synthesis of important medronic acid monoalkyl esters via the dealkylation of mixed trimethyl monoalkyl esters of medronic acid. Two methods were developed for the purification of medronic acid monoesters: 1) small scale (10–20 mg) purification by using hydroxyapatite and 2) large scale (tested up to 140 mg) purification by high-performance countercurrent chromatography (HPCCC).
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Affiliation(s)
- Elina Puljula
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, P.O.Box 1627, FI-70211 Kuopio, Finland
| | - Jouko Vepsäläinen
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, P.O.Box 1627, FI-70211 Kuopio, Finland
| | - Petri A Turhanen
- School of Pharmacy, University of Eastern Finland, Biocenter Kuopio, P.O.Box 1627, FI-70211 Kuopio, Finland
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16
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Deng XZ, Wang YW, Peng JP, Liu KJ, Feng NX, Di YZ. Surface area control of nanocomposites Mg(OH)2/graphene using a cathodic electrodeposition process: high adsorption capability of methyl orange. RSC Adv 2016. [DOI: 10.1039/c6ra15804h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The nanocomposites Mg(OH)2/graphene (nano-MG) were controllably prepared by a facile cathodic electrodeposition.
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Affiliation(s)
- X. Z. Deng
- School of Metallurgy
- Northeastern University
- Shenyang
- China
| | - Y. W. Wang
- School of Metallurgy
- Northeastern University
- Shenyang
- China
| | - J. P. Peng
- School of Metallurgy
- Northeastern University
- Shenyang
- China
| | - K. J. Liu
- School of Metallurgy
- Northeastern University
- Shenyang
- China
| | - N. X. Feng
- School of Metallurgy
- Northeastern University
- Shenyang
- China
| | - Y. Z. Di
- School of Metallurgy
- Northeastern University
- Shenyang
- China
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