1
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McCloy JS, Smith-Gray N, Bussey JM, Stone-Weiss N, Youngman RE. Fluorine in Complex Alumino-Boro-Silicate Glasses: Insight into Chemical Environment and Structure. Inorg Chem 2024; 63:4669-4680. [PMID: 38394614 DOI: 10.1021/acs.inorgchem.3c04281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2024]
Abstract
Fluorine incorporation into silicate glasses is important for technical fields as diverse as geophysics, extractive metallurgy, reconstructive dentistry, optical devices, and radioactive waste management. In this study, we explored the structural role of fluorine in alkaline alumino-borosilicate glass, with increasing amounts of fluorine up to 25 mol % F while maintaining the glass composition. Glasses were characterized by X-ray diffraction (XRD), 27Al and 19F magic angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy, and electron probe microanalysis. Results showed that essentially all F was retained; however, between 12 and 15 mol % F (∼3.6 and 4.5 wt % F), excess fluorine partitions to CaF2 and then NaF and Na-Al-F crystalline phases. Even prior to crystallization, there exist five distinct F sites, three of which evolve into crystalline phases. The two persistent glassy sites likely involve [4]Al-F-Ca/Na local structures. We propose a general understanding of the expected chemical shift of 19F NMR in systems containing Al, Ca, and Na.
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Affiliation(s)
- John S McCloy
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
- Materials Science and Engineering Program, Washington State University, Pullman, Washington 99164, United States
| | - Natalie Smith-Gray
- Materials Science and Engineering Program, Washington State University, Pullman, Washington 99164, United States
| | - John M Bussey
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Nicholas Stone-Weiss
- School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, United States
| | - Randall E Youngman
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, United States
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2
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Mohammadi H, Zeidler A, Youngman RE, Fischer HE, Salmon PS. Pressure dependent structure of amorphous magnesium aluminosilicates: The effect of replacing magnesia by alumina at the enstatite composition. J Chem Phys 2024; 160:064501. [PMID: 38341794 DOI: 10.1063/5.0189392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 01/07/2024] [Indexed: 02/13/2024] Open
Abstract
The effect of replacing magnesia by alumina on the pressure-dependent structure of amorphous enstatite was investigated by applying in situ high-pressure neutron diffraction with magnesium isotope substitution to glassy (MgO)0.375(Al2O3)0.125(SiO2)0.5. The replacement leads to a factor of 2.4 increase in the rate-of-change of the Mg-O coordination number with pressure, which increases from 4.76(4) at ambient pressure to 6.51(4) at 8.2 GPa, and accompanies a larger probability of magnesium finding bridging oxygen atoms as nearest-neighbors. The Al-O coordination number increases from 4.17(7) to 5.24(8) over the same pressure interval at a rate that increases when the pressure is above ∼3.5 GPa. On recovering the glass to ambient conditions, the Mg-O and Al-O coordination numbers reduce to 5.32(4) and 4.42(6), respectively. The Al-O value is in accordance with the results from solid-state 27Al nuclear magnetic resonance spectroscopy, which show the presence of six-coordinated aluminum species that are absent in the uncompressed material. These findings explain the appearance of distinct pressure-dependent structural transformation regimes in the preparation of permanently densified magnesium aluminosilicate glasses. They also indicate an anomalous minimum in the pressure dependence of the bulk modulus with an onset that suggests a pressure-dependent threshold for transitioning between scratch-resistant and crack-resistant material properties.
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Affiliation(s)
| | - Anita Zeidler
- Department of Physics, University of Bath, Bath BA2 7AY, United Kingdom
| | - Randall E Youngman
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA
| | - Henry E Fischer
- Institut Laue Langevin, 71 Avenue des Martyrs, 38042 Grenoble Cedex 9, France
| | - Philip S Salmon
- Department of Physics, University of Bath, Bath BA2 7AY, United Kingdom
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3
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Mendes Da Silva R, Zeidler A, Mohammadi H, Gammond LVD, Girón Lange E, Youngman RE, Aitken BG, Hannon AC, Benmore CJ, Vaughan GBM, Salmon PS. Mapping the structural trends in zinc aluminosilicate glasses. J Chem Phys 2023; 159:064501. [PMID: 37551811 DOI: 10.1063/5.0157790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 07/20/2023] [Indexed: 08/09/2023] Open
Abstract
The structure of zinc aluminosilicate glasses with the composition (ZnO)x(Al2O3)y(SiO2)1-x-y, where 0 ≤ x < 1, 0 ≤ y < 1, and x + y < 1, was investigated over a wide composition range by combining neutron and high-energy x-ray diffraction with 27Al magic angle spinning nuclear magnetic resonance spectroscopy. The results were interpreted using an analytical model for the composition-dependent structure in which the zinc ions do not act as network formers. Four-coordinated aluminum atoms were found to be in the majority for all the investigated glasses, with five-coordinated aluminum atoms as the main minority species. Mean Al-O bond distances of 1.764(5) and 1.855(5) Å were obtained for the four- and five-coordinated aluminum atoms, respectively. The coordination environment of zinc was not observed to be invariant. Instead, it is dependent on whether zinc plays a predominantly network-modifying or charge-compensating role and, therefore, varies systematically with the glass composition. The Zn-O coordination number and bond distance were found to be 4.36(9) and 2.00(1) Å, respectively, for the network-modifying role vs 5.96(10) and 2.08(1) Å, respectively, for the charge-compensating role. The more open coordination environment of the charge-compensator is related to an enhanced probability of zinc finding bridging oxygen atoms as nearest-neighbors, reflecting a change in the connectivity of the glass network comprising four-coordinated silicon and aluminum atoms as the alumina content is increased.
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Affiliation(s)
| | - Anita Zeidler
- Department of Physics, University of Bath, Bath BA2 7AY, United Kingdom
| | | | | | - Esther Girón Lange
- Department of Physics, University of Bath, Bath BA2 7AY, United Kingdom
- Institut Laue Langevin, 71 Avenue des Martyrs, 38042 Grenoble Cedex 9, France
| | - Randall E Youngman
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA
| | - Bruce G Aitken
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA
| | - Alex C Hannon
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, United Kingdom
| | - Chris J Benmore
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, USA
| | - Gavin B M Vaughan
- ESRF-The European Synchrotron, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Philip S Salmon
- Department of Physics, University of Bath, Bath BA2 7AY, United Kingdom
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4
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Topper B, Möncke D, Youngman RE, Valvi C, Kamitsos EI, Varsamis CPE. Zinc borate glasses: properties, structure and modelling of the composition-dependence of borate speciation. Phys Chem Chem Phys 2023; 25:5967-5988. [PMID: 36752128 DOI: 10.1039/d2cp05517a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The short-range order of binary zinc borate glasses, xZnO-(1-x)B2O3, has been quantitatively described as a function of ZnO content over the entire glass forming range for the first time, to the best of our knowledge. Multiple spectroscopic techniques (11B NMR, Raman, infrared) reveal detailed structural information regarding borate speciation and network connectivity, and a new model for quantifying the molar fractions of short-range order units is proposed. A consistent thermal history dependence for the fraction of tetrahedral boron (N4) is well accounted for by the proposed model. The model predicts density within 0.1% of experimental values and N4 to within 1% of NMR values. The intermediate character of four-coordinated zinc in borate glasses of this series is evident by the far infrared profiles and the glass transition temperature behavior, which decreases non-monotonically with increasing ZnO content.
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Affiliation(s)
- Brian Topper
- Inamori School of Engineering at the New York State College of Ceramics, Alfred University, 1 Saxon Drive, Alfred, NY 14802, USA. .,Department of Physics & Astronomy and Center for High Technology Materials, University of New Mexico, Albuquerque, NM 87131, USA
| | - Doris Möncke
- Inamori School of Engineering at the New York State College of Ceramics, Alfred University, 1 Saxon Drive, Alfred, NY 14802, USA.
| | - Randall E Youngman
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA
| | - Christina Valvi
- Applied Physics Laboratory, Faculty of Engineering, University of West Attica, 250 Thivon, 112 41 Egaleo, Attica, Greece.
| | - Efstratios I Kamitsos
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Christos P E Varsamis
- Applied Physics Laboratory, Faculty of Engineering, University of West Attica, 250 Thivon, 112 41 Egaleo, Attica, Greece.
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5
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Mohammadi H, Mendes Da Silva R, Zeidler A, Gammond LVD, Gehlhaar F, de Oliveira M, Damasceno H, Eckert H, Youngman RE, Aitken BG, Fischer HE, Kohlmann H, Cormier L, Benmore CJ, Salmon PS. Structure of diopside, enstatite, and magnesium aluminosilicate glasses: A joint approach using neutron and x-ray diffraction and solid-state NMR. J Chem Phys 2022; 157:214503. [DOI: 10.1063/5.0125879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Neutron diffraction with magnesium isotope substitution, high energy x-ray diffraction, and 29Si, 27Al, and 25Mg solid-state nuclear magnetic resonance (NMR) spectroscopy were used to measure the structure of glassy diopside (CaMgSi2O6), enstatite (MgSiO3), and four (MgO) x(Al2O3) y(SiO2)1−x−y glasses, with x = 0.375 or 0.25 along the 50 mol. % silica tie-line (1 − x − y = 0.5) or with x = 0.3 or 0.2 along the 60 mol. % silica tie-line (1 − x − y = 0.6). The bound coherent neutron scattering length of the isotope 25Mg was remeasured, and the value of 3.720(12) fm was obtained from a Rietveld refinement of the powder diffraction patterns measured for crystalline 25MgO. The diffraction results for the glasses show a broad asymmetric distribution of Mg–O nearest-neighbors with a coordination number of 4.40(4) and 4.46(4) for the diopside and enstatite glasses, respectively. As magnesia is replaced by alumina along a tie-line with 50 or 60 mol. % silica, the Mg–O coordination number increases with the weighted bond distance as less Mg2+ ions adopt a network-modifying role and more of these ions adopt a predominantly charge-compensating role. 25Mg magic angle spinning (MAS) NMR results could not resolve the different coordination environments of Mg2+ under the employed field strength (14.1 T) and spinning rate (20 kHz). The results emphasize the power of neutron diffraction with isotope substitution to provide unambiguous site-specific information on the coordination environment of magnesium in disordered materials.
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Affiliation(s)
| | | | - Anita Zeidler
- Department of Physics, University of Bath, Bath BA2 7AY, United Kingdom
| | | | - Florian Gehlhaar
- Institut Laue Langevin, 71 Avenue des Martyrs, 38042 Grenoble Cedex 9, France
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Marcos de Oliveira
- Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, São Carlos SP 13566-590, SP, Brazil
| | - Hugo Damasceno
- Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, São Carlos SP 13566-590, SP, Brazil
| | - Hellmut Eckert
- Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, São Carlos SP 13566-590, SP, Brazil
- Institut für Physikalische Chemie, WWU Münster, Corrensstraße 30, D48149 Münster, Germany
| | - Randall E. Youngman
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA
| | - Bruce G. Aitken
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA
| | - Henry E. Fischer
- Institut Laue Langevin, 71 Avenue des Martyrs, 38042 Grenoble Cedex 9, France
| | - Holger Kohlmann
- Institut für Anorganische Chemie, Universität Leipzig, Johannisallee 29, 04103 Leipzig, Germany
| | - Laurent Cormier
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), Sorbonne Université, CNRS UMR 7590, Muséum National d’Histoire Naturelle, IRD UMR 206, 4 place Jussieu, 75005 Paris, France
| | - Chris J. Benmore
- X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, USA
| | - Philip S. Salmon
- Department of Physics, University of Bath, Bath BA2 7AY, United Kingdom
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6
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Wilke SK, Benmore CJ, Ilavsky J, Youngman RE, Rezikyan A, Carson MP, Menon V, Weber R. Phase separation in mullite-composition glass. Sci Rep 2022; 12:17687. [PMID: 36271024 PMCID: PMC9587060 DOI: 10.1038/s41598-022-22557-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 10/17/2022] [Indexed: 11/09/2022] Open
Abstract
Aluminosilicates (AS) are ubiquitous in ceramics, geology, and planetary science, and their glassy forms underpin vital technologies used in displays, waveguides, and lasers. In spite of this, the nonequilibrium behavior of the prototypical AS compound, mullite (40SiO2-60Al2O3, or AS60), is not well understood. By deeply supercooling mullite-composition liquid via aerodynamic levitation, we observe metastable liquid–liquid unmixing that yields a transparent two-phase glass, comprising a nanoscale mixture of AS7 and AS62. Extrapolations from X-ray scattering measurements show the AS7 phase is similar to vitreous SiO2 with a few Al species substituted for Si. The AS62 phase is built from a highly polymerized network of 4-, 5-, and 6-coordinated AlOx polyhedra. Polymerization of the AS62 network and the composite morphology provide essential mechanisms for toughening the glass.
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Affiliation(s)
- Stephen K Wilke
- Materials Development, Inc., Evanston, IL, 60202, USA. .,X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA.
| | - Chris J Benmore
- X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Jan Ilavsky
- X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Randall E Youngman
- Science and Technology Division, Corning Incorporated, Corning, NY, 14831, USA
| | - Aram Rezikyan
- Science and Technology Division, Corning Incorporated, Corning, NY, 14831, USA
| | - Michael P Carson
- Science and Technology Division, Corning Incorporated, Corning, NY, 14831, USA
| | | | - Richard Weber
- Materials Development, Inc., Evanston, IL, 60202, USA.,X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
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7
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Fan W, Du T, Droce A, Jensen LR, Youngman RE, Ren X, Gurevich L, Bauchy M, Kristensen P, Xing B, Yu D, Smedskjaer MM. Resolving the Conflict between Strength and Toughness in Bioactive Silica-Polymer Hybrid Materials. ACS Nano 2022; 16:9748-9761. [PMID: 35679120 DOI: 10.1021/acsnano.2c03440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Simultaneously improving the strength and toughness of materials is a major challenge. Inorganic-polymer hybrids offer the potential to combine mechanical properties of a stiff inorganic glass with a flexible organic polymer. However, the toughening mechanism at the atomic scale remains largely unknown. Based on combined experimental and molecular dynamics simulation results, we find that the deformation and fracture behavior of hybrids are governed by noncovalent intermolecular interactions between polymer and silica networks rather than the breakage of covalent bonds. We then attempt three methods to improve the balance between strength and toughness of hybrids, namely the total inorganic/organic (I/O) weight ratio, the size of silica nanoparticles, and the ratio of -C-O vs -C-C bonds in the polymer chains. Specifically, for a hybrid with matched silica size and I/O ratio, we demonstrate optimized mechanical properties in terms of strength (1.75 MPa at breakage), degree of elongation at the fracture point (31%), toughness (219 kPa), hardness (1.08 MPa), as well as Young's modulus (3.0 MPa). We also demonstrate that this hybrid material shows excellent biocompatibility and ability to support cell attachment as well as proliferation. This supports the possible application of this material as a strong yet tough bone scaffold material.
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Affiliation(s)
- Wei Fan
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark
| | - Tao Du
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark
| | - Aida Droce
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark
| | - Lars R Jensen
- Department of Materials and Production, Aalborg University, 9220 Aalborg, Denmark
| | - Randall E Youngman
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, United States
| | - Xiangting Ren
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark
| | - Leonid Gurevich
- Department of Materials and Production, Aalborg University, 9220 Aalborg, Denmark
| | - Mathieu Bauchy
- Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095, United States
| | - Peter Kristensen
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark
| | - Bengang Xing
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Donghong Yu
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark
| | - Morten M Smedskjaer
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark
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8
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Gammond LVD, Youngman RE, Zeidler A, Aitken BG, Salmon PS. Structural model for amorphous aluminosilicates. J Chem Phys 2022; 156:064503. [DOI: 10.1063/5.0079607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - Randall E. Youngman
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA
| | - Anita Zeidler
- Department of Physics, University of Bath, Bath BA2 7AY, United Kingdom
| | - Bruce G. Aitken
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA
| | - Philip S. Salmon
- Department of Physics, University of Bath, Bath BA2 7AY, United Kingdom
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9
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Stone-Weiss N, Smith NJ, Youngman RE, Pierce EM, Goel A. Dissolution kinetics of a sodium borosilicate glass in Tris buffer solutions: impact of Tris concentration and acid (HCl/HNO 3) identity. Phys Chem Chem Phys 2021; 23:16165-16179. [PMID: 34297029 DOI: 10.1039/d0cp06425d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Understanding the corrosion behavior of glasses in near-neutral environments is crucial for many technologies including glasses for regenerative medicine and nuclear waste immobilization. To maintain consistent pH values throughout experiments in the pH = 7 to 9 regime, buffer solutions containing tris(hydroxymethyl)aminomethane ("Tris", or sometimes called THAM) are recommended in ISO standards 10993-14 and 23317 for evaluating biomaterial degradation and utilized throughout glass dissolution behavior literature-a key advantage being the absence of dissolved alkali/alkaline earth cations (i.e. Na+ or Ca2+) that can convolute experimental results due to solution feedback effects. Although Tris is effective at maintaining the solution pH, it has presented concerns due to the adverse artificial effects it produces while studying glass corrosion, especially in borosilicate glasses. Therefore, many open questions still remain on the topic of borosilicate glass interaction with Tris-based solutions. We have approached this topic by studying the dissolution behavior of a sodium borosilicate glass in a wide range of Tris-based solutions at 65 °C with varied acid identity (Tris-HCl vs. Tris-HNO3), buffer concentration (0.01 M to 0.5 M), and pH (7-9). The results have been discussed in reference to previous studies on this topic and the following conclusions have been made: (i) acid identity in Tris-based solutions does not exhibit a significant impact on the dissolution behavior of borosilicate glasses, (ii) ∼0.1 M Tris-based solutions are ideal for maintaining solution pH in the absence of obvious undesirable solution chemistry effects, and (iii) Tris-boron complexes can form in solution as a result of glass dissolution processes. The complex formation, however, exhibits a distinct temperature-dependence, and requires further study to uncover the precise mechanisms by which Tris-based solutions impact borosilicate glass dissolution behavior.
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Affiliation(s)
- Nicholas Stone-Weiss
- Department of Materials Science and Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA.
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10
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McKenzie ME, Deng B, Van Hoesen DC, Xia X, Baker DE, Rezikyan A, Youngman RE, Kelton KF. Nucleation pathways in barium silicate glasses. Sci Rep 2021; 11:69. [PMID: 33420156 PMCID: PMC7794403 DOI: 10.1038/s41598-020-79749-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 11/23/2020] [Indexed: 11/16/2022] Open
Abstract
Nucleation is generally viewed as a structural fluctuation that passes a critical size to eventually become a stable emerging new phase. However, this concept leaves out many details, such as changes in cluster composition and competing pathways to the new phase. In this work, both experimental and computer modeling studies are used to understand the cluster composition and pathways. Monte Carlo and molecular dynamics approaches are used to analyze the thermodynamic and kinetic contributions to the nucleation landscape in barium silicate glasses. Experimental techniques examine the resulting polycrystals that form. Both the modeling and experimental data indicate that a silica rich core plays a dominant role in the nucleation process.
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Affiliation(s)
- Matthew E McKenzie
- Science and Technology Division, Corning Research and Development Corporation, Corning, NY, 14831, USA.
| | - Binghui Deng
- Science and Technology Division, Corning Research and Development Corporation, Corning, NY, 14831, USA
| | - D C Van Hoesen
- Department of Physics, Washington University, St. Louis, MO, 63130, USA
| | - Xinsheng Xia
- Institute of Materials Science and Engineering, Washington University, St. Louis, MO, 63130, USA
| | - David E Baker
- Science and Technology Division, Corning Research and Development Corporation, Corning, NY, 14831, USA
| | - Aram Rezikyan
- Science and Technology Division, Corning Research and Development Corporation, Corning, NY, 14831, USA
| | - Randall E Youngman
- Science and Technology Division, Corning Research and Development Corporation, Corning, NY, 14831, USA
| | - K F Kelton
- Department of Physics, Washington University, St. Louis, MO, 63130, USA.,Institute of Materials Science and Engineering, Washington University, St. Louis, MO, 63130, USA
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11
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Fan W, Youngman RE, Ren X, Yu D, Smedskjaer MM. Structural control of self-healing silica-poly(tetrahydropyran)-poly(ε-caprolactone) hybrids. J Mater Chem B 2021; 9:4400-4410. [PMID: 34019617 DOI: 10.1039/d1tb00555c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In some biomaterial applications, the device needs to resist cyclic loading. Recently, self-healing hybrid systems with interpenetrating network of organic and inorganic components have been discovered. In this work, we clarify the structure-mechanical property relations in a new series of silica-poly(tetrahydropyran)-poly(ε-caprolactone) (SiO2-PTHP-PCL) materials, which were prepared through a three-step synthesis, including one-pot cationic ring-opening polymerization, sol-gel reaction, and polymer-silica cross condensation. We applied THP as the main constituent of the organic phase and achieved successful polymerization under mild conditions, while the hybrid structures were controlled by the degree of silica-crosslinking and the organic/inorganic ratio. The thermal stabilities, densities, Young's modulus as well as hardness could also be regulated through such control. Notably, we find that the hybrid materials with organic polymer content above 73% are able to self-heal induced damages, including under body temperature conditions and the mechanical properties of the self-healed material are similar to those of the fresh samples. We ascribe this primarily to the reversible intermolecular interactions and hydrogen bonding among the polymer chains. Finally, we discover that the PTHP-SiO2 networks are stable in a simulated bio-environment although PCL underwent biodegradation. The present structural control approach could lead to the design of tailored functional hybrid materials, with potential applications within areas such as soft robotics and bone regeneration.
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Affiliation(s)
- Wei Fan
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark.
| | - Randall E Youngman
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA
| | - Xiangting Ren
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark.
| | - Donghong Yu
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark.
| | - Morten M Smedskjaer
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark.
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12
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Bødker MS, Youngman RE, Mauro JC, Smedskjaer MM. Mixed Alkali Effect in Silicate Glass Structure: Viewpoint of 29Si Nuclear Magnetic Resonance and Statistical Mechanics. J Phys Chem B 2020; 124:10292-10299. [PMID: 33143414 DOI: 10.1021/acs.jpcb.0c07980] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The mixed alkali effect in glasses is the deviation from linear property changes when alkali cations are mixed. The extent of this effect and its structural origin remain topics of interest. In this work, we use a statistical mechanics approach to predict the composition-structure relationship in mixed modifier Na2O-K2O-SiO2 glasses. This is achieved by accounting for the enthalpy between each pairwise alkali ion and silicate unit interaction. The initial enthalpy parameters are obtained based on experimental structural data for binary Na2O-SiO2 and K2O-SiO2 glasses, which can be transferred to predict the short-range order structure of mixed modifier glasses without additional free parameters. To this end, we have performed 29Si magic angle spinning NMR spectroscopy measurements on y(xNa2O-(1 - x)K2O)-(100 - y)SiO2 glasses with x = 0, 0.25, 0.5, 0.75, and 1 and y = 34, 42, and 50. Good agreement between experimental data and model predictions are observed. Finally, we use this information to discuss the relative entropic and enthalpic contributions to the mixed modifier effect in silicate glass structure.
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Affiliation(s)
- Mikkel S Bødker
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark
| | - Randall E Youngman
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, United States
| | - John C Mauro
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Morten M Smedskjaer
- Department of Chemistry and Bioscience, Aalborg University, 9220 Aalborg, Denmark
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13
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Cai L, Youngman RE, Baker DE, Rezikyan A, Zhang M, Wheaton B, Dutta I, Aitken BG, Allen AJ. Nucleation and early stage crystallization in barium disilicate glass. J Non Cryst Solids 2020; 548:10.1016/j.jnoncrysol.2020.120330. [PMID: 34135535 PMCID: PMC8201573 DOI: 10.1016/j.jnoncrysol.2020.120330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Barium disilicate is one of the glass-ceramic systems where internal nucleation and crystallization can occur from quenched glass upon heat treatment without requiring nucleating agents. The structural origin of the nano-clusters formed during low temperature heat treatment is of great interest in gaining a fundamental understanding of nucleation kinetics in silicate glasses. Here, we present experimental investigations on the low temperature heat treatment of barium disilicate (BaO·2SiO2) glass. Several experimental techniques were used to characterize the structural nature of barium disilicate glasses that were heat treated between the glass transition temperature, Tg, and the peak temperature of crystal growth, Tcr. The data show that small amounts of crystallites including BaSi2O5 as well as other higher Ba/Si ratio phases are formed. Moreover, unlike that reported for lower BaO content (BaO<33mol%) barium silicate glass or the analogous Li2O-SiO2 glasses, no clear evidence is observed for liquid/liquid phase separation in barium disilicate glass.
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Affiliation(s)
- Ling Cai
- Science and Technology Division, Corning Incorporated, Corning, NY, USA
| | | | - David E Baker
- Science and Technology Division, Corning Incorporated, Corning, NY, USA
| | - Aram Rezikyan
- Science and Technology Division, Corning Incorporated, Corning, NY, USA
| | - Minghui Zhang
- Science and Technology Division, Corning Incorporated, Corning, NY, USA
| | - Bryan Wheaton
- Science and Technology Division, Corning Incorporated, Corning, NY, USA
| | - Indrajit Dutta
- Science and Technology Division, Corning Incorporated, Corning, NY, USA
| | - Bruce G Aitken
- Science and Technology Division, Corning Incorporated, Corning, NY, USA
| | - Andrew J Allen
- Materials Measurement Science Division, National Institute of Standards and Technology, Gaithersburg, MD, USA
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14
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Deshkar A, Gulbiten O, Youngman RE, Mauro JC, Goel A. Why does B2O3 suppress nepheline (NaAlSiO4) crystallization in sodium aluminosilicate glasses? Phys Chem Chem Phys 2020; 22:8679-8698. [DOI: 10.1039/d0cp00172d] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Addition of B2O3 in aluminosilicate glasses leads to structural changes that cause increase in liquidus viscosity and thereby suppresses crystallization.
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Affiliation(s)
- Ambar Deshkar
- Department of Materials Science and Engineering
- Rutgers, The State University of New Jersey
- Piscataway
- USA
| | - Ozgur Gulbiten
- Science and Technology Division
- Corning Incorporated
- Corning
- USA
| | | | - John C. Mauro
- Department of Materials Science and Engineering
- The Pennsylvania State University
- University Park
- USA
| | - Ashutosh Goel
- Department of Materials Science and Engineering
- Rutgers, The State University of New Jersey
- Piscataway
- USA
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15
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Stone-Weiss N, Youngman RE, Thorpe R, Smith NJ, Pierce EM, Goel A. An insight into the corrosion of alkali aluminoborosilicate glasses in acidic environments. Phys Chem Chem Phys 2020; 22:1881-1896. [DOI: 10.1039/c9cp06064b] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Sodium aluminoborosilicate glasses with wide-ranging compositions and structures corrode according to remarkably similar mechanisms in acidic environments.
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Affiliation(s)
- Nicholas Stone-Weiss
- Department of Materials Science and Engineering, Rutgers
- The State University of New Jersey
- Piscataway
- USA
| | | | - Ryan Thorpe
- Department of Physics and Astronomy and Laboratory for Surface Modification, Rutgers
- The State University of New Jersey
- Piscataway
- USA
| | | | - Eric M. Pierce
- Environmental Sciences Division
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - Ashutosh Goel
- Department of Materials Science and Engineering, Rutgers
- The State University of New Jersey
- Piscataway
- USA
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16
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Bødker MS, Mauro JC, Youngman RE, Smedskjaer MM. Statistical Mechanical Modeling of Borate Glass Structure and Topology: Prediction of Superstructural Units and Glass Transition Temperature. J Phys Chem B 2019; 123:1206-1213. [PMID: 30620586 DOI: 10.1021/acs.jpcb.8b11926] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Predicting the compositional evolution of the atomic-scale structure and properties of oxide glasses is important for designing new materials for advanced applications. A statistical mechanics-based approach has recently been applied to predict the composition-structure evolution in binary phosphate glasses, while topological constraint theory (TCT) has been applied in the last decade to predict the structure-property evolution in various oxide and nonoxide glass systems. In this work, we couple these two approaches to enable quantitative predictions of the compositional dependence of glass transition temperature and the population of superstructural units. The object of the study is the lithium borate glass system because they feature interesting structural characteristics (e.g., boron anomaly), and ample structure and property data are available. In these glasses, the average coordination number of boron first increases when lithium modifiers are added and then later decreases accompanied by network depolymerization. First, on the basis of 10B nuclear magnetic resonance spectroscopy data from literature, we present a statistical description of the structural evolution in lithium borate glasses by accounting for the relative enthalpic and entropic contributions to the bonding preferences. We show that the entire glass structure evolution (both short- and intermediate-range) can be predicted based on experimental structural information for only a few glass compositions. We then show that the developed structural model can be combined with a previously established TCT model to predict the compositional evolution of the glass transition temperature. This work thus opens a new avenue for the computational design of glasses with tailored properties.
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Affiliation(s)
- Mikkel S Bødker
- Department of Chemistry and Bioscience , Aalborg University , 9220 Aalborg , Denmark
| | - John C Mauro
- Department of Materials Science and Engineering , The Pennsylvania State University , University Park , Pennsylvania 16802 , United States
| | - Randall E Youngman
- Science and Technology Division , Corning Incorporated , Corning , New York 14831 , United States
| | - Morten M Smedskjaer
- Department of Chemistry and Bioscience , Aalborg University , 9220 Aalborg , Denmark
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17
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Kapoor S, Youngman RE, Zakharchuk K, Yaremchenko A, Smith NJ, Goel A. Structural and Chemical Approach toward Understanding the Aqueous Corrosion of Sodium Aluminoborate Glasses. J Phys Chem B 2018; 122:10913-10927. [DOI: 10.1021/acs.jpcb.8b06155] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Saurabh Kapoor
- Department of Materials Science and Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Randall E. Youngman
- Science and Technology Division, Corning Incorporated, Painted Post, New York 14870, United States
| | - Kiryl Zakharchuk
- CICECO—Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Aleksey Yaremchenko
- CICECO—Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Nicholas J. Smith
- Science and Technology Division, Corning Incorporated, Painted Post, New York 14870, United States
| | - Ashutosh Goel
- Department of Materials Science and Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
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18
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Bødker MS, Mauro JC, Goyal S, Youngman RE, Smedskjaer MM. Predicting Q-Speciation in Binary Phosphate Glasses Using Statistical Mechanics. J Phys Chem B 2018; 122:7609-7615. [PMID: 29995414 DOI: 10.1021/acs.jpcb.8b04604] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Predicting the compositional evolution of the atomic-scale structure of oxide glasses is important for developing quantitative composition-property models. In binary phosphate glasses, the addition of network modifiers generally leads to depolymerization of the networks as described by the Q-speciation, where Q n denotes PO4 tetrahedra with n number (between 0 and 3) of bridging P-O-P linkages per tetrahedron. Upon the initial creation of nonbridging oxygens and thus partly depolymerized Q species, a variety of network former-modifier interactions exist. Here, on the basis of 31P magic angle spinning nuclear magnetic resonance spectroscopy data from the literature, we present a statistical description of the compositional evolution of Q-speciation in these glasses by accounting for the relative enthalpic and entropic contributions to the bonding preferences. We show that the entire glass structure evolution can be predicted based on experimental structural information for only a few glass compositions in each series. The model also captures the differences in bonding preferences in glasses with different field strengths (charge-to-size ratio) of the modifier cations.
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Affiliation(s)
- Mikkel S Bødker
- Department of Chemistry and Bioscience , Aalborg University , 9220 Aalborg , Denmark
| | - John C Mauro
- Department of Materials Science and Engineering , The Pennsylvania State University , University Park , Pennsylvania 16802 , United States
| | - Sushmit Goyal
- Science and Technology Division , Corning Incorporated , Corning , New York 14831 , United States
| | - Randall E Youngman
- Science and Technology Division , Corning Incorporated , Corning , New York 14831 , United States
| | - Morten M Smedskjaer
- Department of Chemistry and Bioscience , Aalborg University , 9220 Aalborg , Denmark
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19
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Frederiksen KF, Januchta K, Mascaraque N, Youngman RE, Bauchy M, Rzoska SJ, Bockowski M, Smedskjaer MM. Structural Compromise between High Hardness and Crack Resistance in Aluminoborate Glasses. J Phys Chem B 2018; 122:6287-6295. [PMID: 29767513 DOI: 10.1021/acs.jpcb.8b02905] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Alkali aluminoborate glasses have recently been shown to exhibit a high threshold for indentation cracking compared to other bulk oxide glasses. However, to enable the use of these materials in engineering applications, there is a need to improve their hardness by tuning the chemical composition. In this study, we substitute alkaline earth for alkali network-modifying species at fixed aluminoborate base glass composition and correlate it with changes in the structure, mechanical properties, and densification behavior. We find that the increase in field strength (i.e., the charge-to-size ratio) achieved by substituting alkaline earth oxide from BaO to MgO manifests itself in a monotonic increase in several properties, such as atomic packing density, glass-transition temperature, densification ability, indentation hardness, and crack resistance. Although the use of alkaline earth oxides as modifier enables higher hardness values (increasing from 2.0 GPa for Cs to 5.8 GPa for Mg), their crack resistance is generally lower than that of the corresponding alkali aluminoborate glasses. We discuss the origin of this compromise between hardness and crack resistance in terms of the ability of the glass networks to undergo structural transformations and self-adapt under stress. We show that the extent of volume densification scales linearly with the number of pressure-induced coordination number changes of B and Al.
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Affiliation(s)
| | | | | | - Randall E Youngman
- Science and Technology Division , Corning Incorporated , Corning , New York 14831 , United States
| | - Mathieu Bauchy
- Department of Civil and Environmental Engineering , University of California , Los Angeles , California 90095 , United States
| | - Sylwester J Rzoska
- Institute of High-Pressure Physics , Polish Academy of Sciences , Warsaw 01-142 , Poland
| | - Michal Bockowski
- Institute of High-Pressure Physics , Polish Academy of Sciences , Warsaw 01-142 , Poland
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20
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Liu H, Youngman RE, Kapoor S, Jensen LR, Smedskjaer MM, Yue Y. Nano-phase separation and structural ordering in silica-rich mixed network former glasses. Phys Chem Chem Phys 2018; 20:15707-15717. [PMID: 29850688 DOI: 10.1039/c8cp01728j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigate the structure, phase separation, glass transition, and crystallization in a mixed network former glass series, i.e., B2O3-Al2O3-SiO2-P2O5 glasses with varying SiO2/B2O3 molar ratio. All the studied glasses exhibit two separate glassy phases: droplet phase (G1) with the size of 50-100 nm and matrix phase (G2), corresponding to a lower calorimetric glass transition temperature (Tg1) and a higher one (Tg2), respectively. Both Tg values decrease linearly with the substitution of B2O3 for SiO2, but the magnitude of the decrease is larger for Tg1. Based on nuclear magnetic resonance and Raman spectroscopy results, we infer that the G1 phase is rich in boroxol rings, while the G2 phase mainly involves the B-O-Si network. Both phases contain BPO4- and AlPO4-like units. Ordered domains occur in G2 upon isothermal and dynamic heating, driven by the structural heterogeneity in the as-prepared glasses. The structural ordering lowers the activation energy of crystal growth, thus promoting partial crystallization of G2. These findings are useful for understanding glass formation and phase separation in mixed network former oxide systems, and for tailoring their properties.
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Affiliation(s)
- Hao Liu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
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21
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Okaikue-Woodi FE, Kelch SE, Schmidt MP, Enid Martinez C, Youngman RE, Aristilde L. Structures and mechanisms in clay nanopore trapping of structurally-different fluoroquinolone antimicrobials. J Colloid Interface Sci 2018; 513:367-378. [DOI: 10.1016/j.jcis.2017.11.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 11/07/2017] [Accepted: 11/07/2017] [Indexed: 12/14/2022]
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22
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Brehault A, Patil D, Kamat H, Youngman RE, Thirion LM, Mauro JC, Corkhill CL, McCloy JS, Goel A. Compositional Dependence of Solubility/Retention of Molybdenum Oxides in Aluminoborosilicate-Based Model Nuclear Waste Glasses. J Phys Chem B 2018; 122:1714-1729. [PMID: 29332394 DOI: 10.1021/acs.jpcb.7b09158] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Molybdenum oxides are an integral component of the high-level waste streams being generated from the nuclear reactors in several countries. Although borosilicate glass has been chosen as the baseline waste form by most of the countries to immobilize these waste streams, molybdate oxyanions (MoO42-) exhibit very low solubility (∼1 mol %) in these glass matrices. In the past three to four decades, several studies describing the compositional and structural dependence of molybdate anions in borosilicate and aluminoborosilicate glasses have been reported in the literature, providing a basis for our understanding of fundamental science that governs the solubility and retention of these species in the nuclear waste glasses. However, there are still several open questions that need to be answered to gain an in-depth understanding of the mechanisms that control the solubility and retention of these oxyanions in glassy waste forms. This article is focused on finding answers to two such questions: (1) What are the solubility and retention limits of MoO3 in aluminoborosilicate glasses as a function of chemical composition? (2) Why is there a considerable increase in the solubility of MoO3 with incorporation of rare-earth oxides (for example, Nd2O3) in aluminoborosilicate glasses? Accordingly, three different series of aluminoborosilicate glasses (compositional complexity being added in a tiered approach) with varying MoO3 concentrations have been synthesized and characterized for their ability to accommodate molybdate ions in their structure (solubility) and as a glass-ceramic (retention). The contradictory viewpoints (between different research groups) pertaining to the impact of rare-earth cations on the structure of aluminoborosilicate glasses are discussed, and their implications on the solubility of MoO3 in these glasses are evaluated. A novel hypothesis explaining the mechanism governing the solubility of MoO3 in rare-earth containing aluminoborosilicate glasses has been proposed.
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Affiliation(s)
- Antoine Brehault
- Department of Materials Science and Engineering, Rutgers - The State University of New Jersey , Piscataway, New Jersey 08854, United States
| | - Deepak Patil
- School of Mechanical & Materials Engineering and Materials Science & Engineering Program, Washington State University , Pullman, Washington 99164, United States
| | - Hrishikesh Kamat
- Department of Materials Science and Engineering, Rutgers - The State University of New Jersey , Piscataway, New Jersey 08854, United States
| | - Randall E Youngman
- Corning Research & Development Corporation , Corning, New York 14831, United States
| | - Lynn M Thirion
- Corning Research & Development Corporation , Corning, New York 14831, United States
| | - John C Mauro
- Department of Materials Science and Engineering, The Pennsylvania State University , University Park, Pennsylvania 16802, United States
| | - Claire L Corkhill
- NucleUS Immobilisation Science Laboratory, Department of Materials Science and Engineering, The University of Sheffield , Sheffield S10 2TN, U.K
| | - John S McCloy
- School of Mechanical & Materials Engineering and Materials Science & Engineering Program, Washington State University , Pullman, Washington 99164, United States.,NucleUS Immobilisation Science Laboratory, Department of Materials Science and Engineering, The University of Sheffield , Sheffield S10 2TN, U.K
| | - Ashutosh Goel
- Department of Materials Science and Engineering, Rutgers - The State University of New Jersey , Piscataway, New Jersey 08854, United States
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23
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Stone-Weiss N, Pierce EM, Youngman RE, Gulbiten O, Smith NJ, Du J, Goel A. Understanding the structural drivers governing glass-water interactions in borosilicate based model bioactive glasses. Acta Biomater 2018; 65:436-449. [PMID: 29127067 DOI: 10.1016/j.actbio.2017.11.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 10/31/2017] [Accepted: 11/07/2017] [Indexed: 02/09/2023]
Abstract
The past decade has witnessed a significant upsurge in the development of borate and borosilicate based resorbable bioactive glasses owing to their faster degradation rate in comparison to their silicate counterparts. However, due to our lack of understanding about the fundamental science governing the aqueous corrosion of these glasses, most of the borate/borosilicate based bioactive glasses reported in the literature have been designed by "trial-and-error" approach. With an ever-increasing demand for their application in treating a broad spectrum of non-skeletal health problems, it is becoming increasingly difficult to design advanced glass formulations using the same conventional approach. Therefore, a paradigm shift from the "trial-and-error" approach to "materials-by-design" approach is required to develop new-generations of bioactive glasses with controlled release of functional ions tailored for specific patients and disease states, whereby material functions and properties can be predicted from first principles. Realizing this goal, however, requires a thorough understanding of the complex sequence of reactions that control the dissolution kinetics of bioactive glasses and the structural drivers that govern them. While there is a considerable amount of literature published on chemical dissolution behavior and apatite-forming ability of potentially bioactive glasses, the majority of this literature has been produced on silicate glass chemistries using different experimental and measurement protocols. It follows that inter-comparison of different datasets reveals inconsistencies between experimental groups. There are also some major experimental challenges or choices that need to be carefully navigated to unearth the mechanisms governing the chemical degradation behavior and kinetics of boron-containing bioactive glasses, and to accurately determine the composition-structure-property relationships. In order to address these challenges, a simplified borosilicate based model melt-quenched bioactive glass system has been studied to depict the impact of thermal history on its molecular structure and dissolution behavior in water. It has been shown that the methodology of quenching of the glass melt impacts the dissolution rate of the studied glasses by 1.5×-3× depending on the changes induced in their molecular structure due to variation in thermal history. Further, a recommendation has been made to study dissolution behavior of bioactive glasses using surface area of the sample - to - volume of solution (SA/V) approach instead of the currently followed mass of sample - to - volume of solution approach. The structural and chemical dissolution data obtained from bioactive glasses following the approach presented in this paper can be used to develop the structural descriptors and potential energy functions over a broad range of bioactive glass compositions. STATEMENT OF SIGNIFICANCE Realizing the goal of designing third generation bioactive glasses requires a thorough understanding of the complex sequence of reactions that control their rate of degradation (in physiological fluids) and the structural drivers that control them. In this article, we have highlighted some major experimental challenges and choices that need to be carefully navigated in order to unearth the mechanisms governing the chemical dissolution behavior of borosilicate based bioactive glasses. The proposed experimental approach allows us to gain a new level of conceptual understanding about the composition-structure-property relationships in these glass systems, which can be applied to attain a significant leap in designing borosilicate based bioactive glasses with controlled dissolution rates tailored for specific patient and disease states.
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24
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Svenson MN, Youngman RE, Yue Y, Rzoska SJ, Bockowski M, Jensen LR, Smedskjaer MM. Volume and structural relaxation in compressed sodium borate glass. Phys Chem Chem Phys 2016; 18:29879-29891. [DOI: 10.1039/c6cp06341a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Packing of structural units rather than conversions between them is the main mechanism for pressure-induced densification in sodium borate glass.
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Affiliation(s)
| | | | - Yuanzheng Yue
- Department of Chemistry and Bioscience
- Aalborg University
- Aalborg
- Denmark
| | | | - Michal Bockowski
- Institute of High-Pressure Physics
- Polish Academy of Sciences
- Warsaw
- Poland
| | - Lars R. Jensen
- Department of Mechanical and Manufacturing Engineering
- Aalborg University
- Aalborg
- Denmark
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25
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Hermansen C, Guo X, Youngman RE, Mauro JC, Smedskjaer MM, Yue Y. Structure-topology-property correlations of sodium phosphosilicate glasses. J Chem Phys 2015; 143:064510. [DOI: 10.1063/1.4928330] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Hermansen C, Youngman RE, Wang J, Yue Y. Structural and topological aspects of borophosphate glasses and their relation to physical properties. J Chem Phys 2015; 142:184503. [DOI: 10.1063/1.4919798] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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27
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Shaharyar Y, Wein E, Kim JJ, Youngman RE, Muñoz F, Kim HW, Tilocca A, Goel A. Structure-solubility relationships in fluoride-containing phosphate based bioactive glasses. J Mater Chem B 2015; 3:9360-9373. [DOI: 10.1039/c5tb01494h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structural role of fluoride on chemical dissolution behavior of bioactive phosphate glasses has been studied.
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Affiliation(s)
- Yaqoot Shaharyar
- Department of Materials Science and Engineering
- Rutgers
- The State University of New Jersey
- Piscataway
- USA
| | - Eric Wein
- Department of Materials Science and Engineering
- Rutgers
- The State University of New Jersey
- Piscataway
- USA
| | - Jung-Ju Kim
- Institute of Tissue Regeneration Engineering (ITREN)
- Dankook University
- Cheonan 330-714
- South Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine
| | | | | | - Hae-Won Kim
- Institute of Tissue Regeneration Engineering (ITREN)
- Dankook University
- Cheonan 330-714
- South Korea
- Department of Nanobiomedical Science & BK21 PLUS NBM Global Research Center for Regenerative Medicine
| | - Antonio Tilocca
- Department of Chemistry
- University College London
- London WC1H 0AJ
- UK
| | - Ashutosh Goel
- Department of Materials Science and Engineering
- Rutgers
- The State University of New Jersey
- Piscataway
- USA
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28
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Østergaard MB, Youngman RE, Svenson MN, Rzoska SJ, Bockowski M, Jensen LR, Smedskjaer MM. Temperature-dependent densification of sodium borosilicate glass. RSC Adv 2015. [DOI: 10.1039/c5ra16219j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
We provide a comprehensive understanding of the temperature-dependent changes in the network topology, structure, and properties of densified borosilicate glass.
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Affiliation(s)
| | | | | | | | - Michal Bockowski
- Institute of High-Pressure Physics
- Polish Academy of Sciences
- Warsaw
- Poland
| | - Lars R. Jensen
- Department of Mechanical and Manufacturing Engineering
- Aalborg University
- Aalborg
- Denmark
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Svenson MN, Thirion LM, Youngman RE, Mauro JC, Rzoska SJ, Bockowski M, Smedskjaer MM. Pressure-induced changes in interdiffusivity and compressive stress in chemically strengthened glass. ACS Appl Mater Interfaces 2014; 6:10436-10444. [PMID: 24911917 DOI: 10.1021/am5019868] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Glass exhibits a significant change in properties when subjected to high pressure because the short- and intermediate-range atomic structures of glass are tunable through compression. Understanding the link between the atomic structure and macroscopic properties of glass under high pressure is an important scientific problem because the glass structures obtained via quenching from elevated pressure may give rise to properties unattainable under standard ambient pressure conditions. In particular, the chemical strengthening of glass through K(+)-for-Na(+) ion exchange is currently receiving significant interest due to the increasing demand for stronger and more damage-resistant glass. However, the interplay among isostatic compression, pressure-induced changes in alkali diffusivity, compressive stress generated through ion exchange, and the resulting mechanical properties are poorly understood. In this work, we employ a specially designed gas pressure chamber to compress bulk glass samples isostatically up to 1 GPa at elevated temperature before or after the ion exchange treatment of a commercial sodium-magnesium aluminosilicate glass. Compression of the samples prior to ion exchange leads to a decreased Na(+)-K(+) interdiffusivity, increased compressive stress, and slightly increased hardness. Compression after the ion exchange treatment changes the shape of the potassium-sodium diffusion profiles and significantly increases glass hardness. We discuss these results in terms of the underlying structural changes in network-modifier environments and overall network densification.
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Smedskjaer MM, Youngman RE, Striepe S, Potuzak M, Bauer U, Deubener J, Behrens H, Mauro JC, Yue Y. Irreversibility of pressure induced boron speciation change in glass. Sci Rep 2014; 4:3770. [PMID: 24442182 PMCID: PMC3895877 DOI: 10.1038/srep03770] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 12/30/2013] [Indexed: 12/30/2022] Open
Abstract
It is known that the coordination number (CN) of atoms or ions in many materials increases through application of sufficiently high pressure. This also applies to glassy materials. In boron-containing glasses, trigonal BO3 units can be transformed into tetrahedral BO4 under pressure. However, one of the key questions is whether the pressure-quenched CN change in glass is reversible upon annealing below the ambient glass transition temperature (Tg). Here we address this issue by performing (11)B NMR measurements on a soda lime borate glass that has been pressure-quenched at ~0.6 GPa near Tg. The results show a remarkable phenomenon, i.e., upon annealing at 0.9Tg the pressure-induced change in CN remains unchanged, while the pressurised values of macroscopic properties such as density, refractive index, and hardness are relaxing. This suggests that the pressure-induced changes in macroscopic properties of soda lime borate glasses compressed up to ~0.6 GPa are not attributed to changes in the short-range order in the glass, but rather to changes in overall atomic packing density and medium-range structures.
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Affiliation(s)
| | - Randall E Youngman
- Science and Technology Division, Corning Incorporated, Corning, NY 14831, USA
| | - Simon Striepe
- Institute of Non-Metallic Materials, Clausthal University of Technology, 38678 Clausthal-Zellerfeld, Germany
| | - Marcel Potuzak
- Science and Technology Division, Corning Incorporated, Corning, NY 14831, USA
| | - Ute Bauer
- Institute of Mineralogy, Leibniz University Hannover, 30167 Hannover, Germany
| | - Joachim Deubener
- Institute of Non-Metallic Materials, Clausthal University of Technology, 38678 Clausthal-Zellerfeld, Germany
| | - Harald Behrens
- Institute of Mineralogy, Leibniz University Hannover, 30167 Hannover, Germany
| | - John C Mauro
- Science and Technology Division, Corning Incorporated, Corning, NY 14831, USA
| | - Yuanzheng Yue
- Section of Chemistry, Aalborg University, DK-9000 Aalborg, Denmark
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Abstract
Borosilicate glasses display a rich complexity of chemical behavior depending on the details of their composition and thermal history. Noted for their high chemical durability and thermal shock resistance, borosilicate glasses have found a variety of important uses from common household and laboratory glassware to high-tech applications such as liquid crystal displays. In this paper, we investigate the topological principles of borosilicate glass chemistry covering the extremes from pure borate to pure silicate end members. Based on NMR measurements, we present a two-state statistical mechanical model of boron speciation in which addition of network modifiers leads to a competition between the formation of nonbridging oxygen and the conversion of boron from trigonal to tetrahedral configuration. Using this model, we derive a detailed topological representation of alkali-alkaline earth-borosilicate glasses that enables the accurate prediction of properties such as glass transition temperature, liquid fragility, and hardness. The modeling approach enables an understanding of the microscopic mechanisms governing macroscopic properties. The implications of the glass topology are discussed in terms of both the temperature and thermal history dependence of the atomic bond constraints and the influence on relaxation behavior. We also observe a nonlinear evolution of the jump in isobaric heat capacity at the glass transition when substituting SiO(2) for B(2)O(3), which can be accurately predicted using a combined topological and thermodynamic modeling approach.
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Affiliation(s)
- Morten M Smedskjaer
- Science and Technology Division, Corning Incorporated, Corning, New York 14831, United States
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Yongsunthon R, Baker WA, Bryhan MD, Baker DE, Chang T, Petzold ON, Walczak WJ, Liu J, Faris RA, Senaratne W, Seeley LA, Youngman RE. Force spectroscopy of hepatocytic extracellular matrix components. Ultramicroscopy 2009; 109:942-7. [PMID: 19362423 DOI: 10.1016/j.ultramic.2009.03.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
We present atomic force microscopy and force spectroscopy data of live hepatocytes (HEPG2/C3A liver cell line) grown in Eagle's Minimum Essential Medium, a complex solution of salts and amino acids commonly used for cell culture. Contact-mode imaging and force spectroscopy of this system allowed correlation of cell morphology and extracellular matrix (ECM) properties with substrate properties. Force spectroscopy analysis of cellular "footprints" indicated that the cells secrete large polymers (e.g., 3.5mum contour length and estimated MW 1000kDa) onto their substrate surface. Although definitive identification of the polymers has not yet been achieved, fluorescent-labeled antibody staining has specified the presence of ECM proteins such as collagen and laminin in the cellular footprints. The stretched polymers appear to be much larger than single molecules of known ECM components, such as collagen and heparan sulfate proteoglycan, thus suggesting that the cells create larger entangled, macromolecular structures from smaller components. There is strong evidence which suggests that the composition of the ECM is greatly influenced by the hydrophobicity of the substrate surface, with preferential production and/or adsorption of larger macromolecules on hydrophobic surfaces.
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Affiliation(s)
- R Yongsunthon
- Corning Incorporated, SP-FR-01, R1S32D, Corning, NY 14831, USA.
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Affiliation(s)
- Richard Weber
- Materials Development, Inc., Arlington Heights, Illinois 60004, Department of Chemical Engineering and Materials Science, University of California-Davis, Davis, California 95616, Corning, Inc., Corning, New York 14831, Shepherd Chemical Company, Norwood, Ohio 45212, and Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439
| | - Sabyasachi Sen
- Materials Development, Inc., Arlington Heights, Illinois 60004, Department of Chemical Engineering and Materials Science, University of California-Davis, Davis, California 95616, Corning, Inc., Corning, New York 14831, Shepherd Chemical Company, Norwood, Ohio 45212, and Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439
| | - Randall E. Youngman
- Materials Development, Inc., Arlington Heights, Illinois 60004, Department of Chemical Engineering and Materials Science, University of California-Davis, Davis, California 95616, Corning, Inc., Corning, New York 14831, Shepherd Chemical Company, Norwood, Ohio 45212, and Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439
| | - Robert T. Hart
- Materials Development, Inc., Arlington Heights, Illinois 60004, Department of Chemical Engineering and Materials Science, University of California-Davis, Davis, California 95616, Corning, Inc., Corning, New York 14831, Shepherd Chemical Company, Norwood, Ohio 45212, and Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439
| | - Chris J. Benmore
- Materials Development, Inc., Arlington Heights, Illinois 60004, Department of Chemical Engineering and Materials Science, University of California-Davis, Davis, California 95616, Corning, Inc., Corning, New York 14831, Shepherd Chemical Company, Norwood, Ohio 45212, and Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439
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Gasper SM, Schissel DN, Baker LS, Smith DL, Youngman RE, Wu LM, Sonner SM, Hancock RR, Hogue CL, Givens SR. Integrated Approach to Studying the Development and Final Network Properties of Urethane Acrylate Coatings. Macromolecules 2006. [DOI: 10.1021/ma051918j] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Youngman RE, Sen S. A high-resolution 19F NMR spectroscopic study of barium fluorozirconate glasses and related crystals. Solid State Nucl Magn Reson 2005; 27:77-89. [PMID: 15589729 DOI: 10.1016/j.ssnmr.2004.06.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2004] [Revised: 06/17/2004] [Indexed: 05/24/2023]
Abstract
Fluorozirconate glasses have attracted considerable attention not only for their transparency in the infrared, but also due to their high fluorine ion conductivities and extreme fragility in the viscosity-temperature relationship. We report on structural studies of binary BaF2-ZrF4 glasses with 58-78 mol% ZrF4 using high-resolution magic-angle-spinning 19F NMR. High-speed 19F MAS NMR allows us to resolve at least three unique fluorine environments in these binary glasses. These fluorine environments are attributed to one type of bridging fluorine, between corner-sharing Zr-F coordination polyhedra, and two types of non-bridging fluorine (NBF), one of which is bonded to one Zr and one Ba atom while the other is bonded to one Zr and two Ba atoms. The concentration of the first type of NBF increases with decreasing ZrF4 concentration, while that of the second type is essentially independent of glass composition. These assignments have been made on the basis of detailed 19F NMR studies of a wide variety of crystalline fluorozirconates with known crystal structures. A comparison between the glass and crystal 19F NMR spectra rules out any significant concentration of edge-shared Zr-F polyhedra in these binary glasses. The Zr atoms in all glasses are found to be coordinated to approximately 7.8+/-0.2F atoms.
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Affiliation(s)
- Randall E Youngman
- Corning Incorporated, Science and Technology, SP-AR-02-4 Corning, NY 14831, USA
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Youngman RE, Zwanziger JW. Network Modification in Potassium Borate Glasses: Structural Studies with NMR and Raman Spectroscopies. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp961439+] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
Ordering at short-length scales is a universal feature of the glassy state. Experiments on boron oxide and other materials indicate that ordering on mesoscopic-length scales may also be universal. The high-resolution nuclear magnetic resonance (NMR) measurements of oxygen in boron oxide glass presented here provide evidence for structural units responsible for ordering on short- and intermediate-length scales. At the molecular level, planar BO(3/2) units accounted for the local ordering. Oxygen-17 NMR spectra resolved detailed features of the inclusion of these units in boroxol rings, oxygen bridging two rings, and oxygen shared between two nonring BO(3/2) units. On the basis of these and corroborative boron-11 NMR and scattering results, boron oxide glass consists of domains that are rich or poor in boroxol rings; these domains are proposed to be the structural basis of intermediate-range order in glassy boron oxide.
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