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Electrochemical and biological characterization of Ti-Nb-Zr-Si alloy for orthopedic applications. Sci Rep 2023; 13:2312. [PMID: 36759646 PMCID: PMC9911760 DOI: 10.1038/s41598-023-29553-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 02/06/2023] [Indexed: 02/11/2023] Open
Abstract
The performance of current biomedical titanium alloys is limited by inflammatory and severe inflammatory conditions after implantation. In this study, a novel Ti-Nb-Zr-Si (TNZS) alloy was developed and compared with commercially pure titanium, and Ti-6Al-4V alloy. Electrochemical parameters of specimens were monitored during 1 h and 12 h immersion in phosphate buffered saline (PBS) as a normal, PBS/hydrogen peroxide (H2O2) as an inflammatory, and PBS/H2O2/albumin/lactate as a severe inflammatory media. The results showed an effect of the H2O2 in inflammatory condition and the synergistic behavior of H2O2, albumin, and lactate in severe inflammatory condition towards decreasing the corrosion resistance of titanium biomaterials. Electrochemical tests revealed a superior corrosion resistance of the TNZS in all conditions due to the presence of silicide phases. The developed TNZS was tested for subsequent cell culture investigation to understand its biocompatibility nature. It exhibited favorable cell-materials interactions in vitro compared with Ti-6Al-4V. The results suggest that TNZS alloy might be a competitive biomaterial for orthopedic applications.
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Dong Y, Wunderlich R, Fecht HJ. Effect of annealing and cobalt content on relaxation and crystallization behavior of zirconium based bulk metallic glasses. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201715107001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tombari E, Presto S, Shanker RM, Johari GP. Crystallization Kinetics of Ultraviscous Acetaminophen by Heat Capacity and Enthalpy Measurements and Diffusion Control. J Phys Chem B 2009; 113:15293-303. [DOI: 10.1021/jp905010w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- E. Tombari
- Istituto per i Processi Chimico-Fisici del CNR, via G. Moruzzi 1, 56124 Pisa, Italy, Groton Laboratories, Pfizer Inc., Groton, Connecticut 06340, and Department of Materials Science and Engineering, McMaster University, Hamilton, Ont L8S 4L7, Canada
| | - S. Presto
- Istituto per i Processi Chimico-Fisici del CNR, via G. Moruzzi 1, 56124 Pisa, Italy, Groton Laboratories, Pfizer Inc., Groton, Connecticut 06340, and Department of Materials Science and Engineering, McMaster University, Hamilton, Ont L8S 4L7, Canada
| | - Ravi M. Shanker
- Istituto per i Processi Chimico-Fisici del CNR, via G. Moruzzi 1, 56124 Pisa, Italy, Groton Laboratories, Pfizer Inc., Groton, Connecticut 06340, and Department of Materials Science and Engineering, McMaster University, Hamilton, Ont L8S 4L7, Canada
| | - G. P. Johari
- Istituto per i Processi Chimico-Fisici del CNR, via G. Moruzzi 1, 56124 Pisa, Italy, Groton Laboratories, Pfizer Inc., Groton, Connecticut 06340, and Department of Materials Science and Engineering, McMaster University, Hamilton, Ont L8S 4L7, Canada
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Gunawan L, Johari GP, Shanker RM. Structural relaxation of acetaminophen glass. Pharm Res 2006; 23:967-79. [PMID: 16715387 DOI: 10.1007/s11095-006-9898-0] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2005] [Accepted: 01/06/2006] [Indexed: 11/27/2022]
Abstract
PURPOSE The aim is to determine the structural stability of acetaminophen glass with time and temperature change, and to examine the merits of adapting the structural relaxation models of the glassy state for pharmaceuticals. METHODS Differential scanning calorimetry technique has been used to study the acetaminophen glass after keeping the samples for various periods at fixed temperatures and after keeping at various temperatures for fixed periods. RESULTS A general formalism for thermodynamic changes during storage in a temperature fluctuating environment is given and the kinetics of the enthalpy and entropy decrease determined. At a fixed temperature, the decrease occurs according to a non-exponential kinetics. For the same storage time, but at different temperatures, the enthalpy and entropy decrease rises to a maximum value at a certain temperature and then declines. The peak appears at the temperature at which the internally equilibrated state of the sample is reached for a fixed storage time. The change in the normalized heat capacity during the heating of acetaminophen has been analysed in terms of a non-exponential, non-linear enthalpy relaxation model. CONCLUSION A single set of parameters that fit the data for unannealed acetaminophen glass does not fit the calorimetric data for annealed glass. Since acetaminophen molecules form intermolecular hydrogen-bonds in the crystal state and likely to form such bonds more easily in the disordered state, effect of such bonds on structural relaxation is likely to be significant.
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Affiliation(s)
- Lina Gunawan
- Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario L8S 4L7, Canada
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Kohl I, Bachmann L, Hallbrucker A, Mayer E, Loerting T. Liquid-like relaxation in hyperquenched water at ≤140 K. Phys Chem Chem Phys 2005; 7:3210-20. [PMID: 16240034 DOI: 10.1039/b507651j] [Citation(s) in RCA: 92] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Micrometre-sized water droplets were hyperquenched on a solid substrate held at selected temperatures between 150 and 77 K. These samples were characterized by differential scanning calorimetry (DSC) and X-ray diffraction. 140 K is the upper temperature limit to obtain mainly amorphous samples on deposition within 16-37 min. DSC scans of glassy water prepared at 140 K exhibit on heating an endothermic step assignable to glass --> liquid transition, with an onset temperature (T(g)) of 136 +/- 2 K on heating at 30 K min(-1). For T(g) of approximately 136 K, water relaxes during deposition at 140 K for 16 min, moving towards metastable equilibrium. The apparent increase in heat capacity (deltaC(p)) depends, for a given rate of heating, on the rate of prior cooling, and a so-called overshoot develops. 140 K deposits cooled at a rate of 5, 2 or 0.2 K min(-1) show on subsequent reheating at a rate of 30 K min(-1) deltaC(p) values of 0.7, 1.1 and 1.7 J K(-1) mol(-1). This is consistent with liquid-like relaxation at 140 K, and it indicates that different limiting structures are obtained. When these 140 K deposits are in addition annealed at 130 K for 90 min, after slow-cooling at 5, 2 or 0.2 K min(-1), their deltaC(p) values on subsequent reheating are similar to those of hyperquenched glassy water (HGW) deposits made at 77 K and annealed at 130 K. Thus, the previous deltaC(p) value of 1.6 J K(-1) mol(-1) obtained with glassy water samples annealed at 130 K (A. Hallbrucker, E. Mayer and G. P. Johari, Philos. Mag. B, 1989, 60, 179) must be an upper-bound limit because it contains a contribution from an overshoot. The T(g) value of 140 K deposits, which had relaxed during deposition towards metastable equilibrium, is within experimental error the same as that of 140 K deposits annealed in addition at 130 K. This contradicts Yue and Angell's (Y. Yue and C. Angell, Nature, 2004, 427, 717) claim for assigning the endothermic step to a sub-T(g) peak or a "shadow" T(g). Our new data further support the proposed fragile-to-strong transition on cooling liquid water from ambient temperature into the deeply supercooled and glassy state. We also describe in detail experimental aspects to obtain HGW specimens, show the ultrastructure of the deposits using electron microscopy, and discuss the mechanism of our hyperquenching method.
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Affiliation(s)
- Ingrid Kohl
- Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria.
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Kohara S, Suzuya K, Takeuchi K, Loong CK, Grimsditch M, Weber JKR, Tangeman JA, Key TS. Glass Formation at the Limit of Insufficient Network Formers. Science 2004; 303:1649-52. [PMID: 15016995 DOI: 10.1126/science.1095047] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Inorganic glasses normally exhibit a network of interconnected, covalent-bonded, structural elements that has no long-range order. In silicate glasses, the network formers are based on SiO4 tetrahedra interconnected through oxygen atoms at the corners. Conventional wisdom implies that alkaline and alkaline-earth orthosilicate materials cannot be vitrified, because they do not contain sufficient network-forming SiO2 to establish the needed interconnectivity. We studied a bulk magnesium orthosilicate glass obtained by containerless melting and cooling. We found that the role of network former was largely taken on by corner and edge sharing of highly distorted, ionic Mg-O species that adopt 4-, 5-, and 6-coordination with oxygen. The results suggest that similar glassy phases may be found in the containerless environment of interstellar space.
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Affiliation(s)
- S Kohara
- Japan Synchrotron Radiation Research Institute, Mikazuki, Sayo, Hyogo 679-5198, Japan
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Johari GP. Calorimetric Features of High-Enthalpy Amorphous Solids and Glass-Softening Temperature of Water. J Phys Chem B 2003. [DOI: 10.1021/jp030009y] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- G. P. Johari
- Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario L8S 4L7, Canada
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Angell CA. Liquid fragility and the glass transition in water and aqueous solutions. Chem Rev 2002; 102:2627-50. [PMID: 12175262 DOI: 10.1021/cr000689q] [Citation(s) in RCA: 489] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- C A Angell
- Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, USA
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Johari G. On the origin of the heat capacity feature of annealed ices and ice clathrates, and interpreting water’s diffusivity in terms of the entropy. Chem Phys 2000. [DOI: 10.1016/s0301-0104(00)00180-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ram S, Jörg-Fecht H. Millimeter Sized Ferromagnetic Fe-clusters: Formation by Mechanical Attrition, Microstructure and Magnetic Properties. ACTA ACUST UNITED AC 2000. [DOI: 10.2320/matertrans1989.41.754] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Shanker Ram
- Materials Science Centre, Indian Institute of Technology
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Ram S, Singh TB, Srikant S. Thermal Desorption Process of Water in Amorphous AlO(OH)·αH 2O Fibres Prepared by an Electrochemical Method. ACTA ACUST UNITED AC 1998. [DOI: 10.2320/matertrans1989.39.485] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- S. Ram
- Materials Science Centre, Indian Institute of Technology
| | - T. B. Singh
- National Metallurgical Laboratory Jamshedpur
| | - S. Srikant
- National Metallurgical Laboratory Jamshedpur
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Sartor G, Johari GP. Thermodynamic Equilibrium of Water and Ice in Hydrated Gliadin and Hemoglobin. J Phys Chem B 1997. [DOI: 10.1021/jp970929e] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- G. Sartor
- Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario L8S 4L7, Canada
| | - G. P. Johari
- Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario L8S 4L7, Canada
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Sartor G, Johari GP. Structural Relaxation of a Vitrified High-Protein Food, Beef, and the Phase Transformations of Its Water Content. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp960150p] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- G. Sartor
- Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario L8S 4L7, Canada
| | - G. P. Johari
- Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario L8S 4L7, Canada
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Johari GP, Sartor G. Vitrification and structural relaxation of a water-swollen protein, wheat gluten and the thermodynamics of its water–protein ↔ ice equilibrium. ACTA ACUST UNITED AC 1996. [DOI: 10.1039/ft9969204521] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hage W, Hallbrucker A, Mayer E, Johari GP. Kinetics of crystallizing D2O water near 150 K by Fourier transform infrared spectroscopy and a comparison with the corresponding calorimetric studies on H2O water. J Chem Phys 1995. [DOI: 10.1063/1.470140] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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