DC and AC Conductivity, Biosolubility and Thermal Properties of Mg-Doped Na2O–CaO–P2O5 Glasses
Abstract
:1. Introduction
2. Materials and Methods
2.1. Glass Preparation
2.2. Glass Characterization
2.3. Impedance Spectroscopy Measurements
2.4. Solubility in PBS
2.5. Thermal Analysis Measurements
3. Results and Discussion
3.1. Confocal Microscopy and Compositional Analysis
3.2. Structural Analysis
3.3. Electrical Properties
3.4. Biosolubility in PBS
3.5. Thermal Properties
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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ID | Starting Composition (mol%) | Final Composition (mol%) |
---|---|---|
0Mg | 10Na2O–60P2O5–30CaO | 7.7Na2O–56.9P2O5–32.6CaO–2.7Al2O3 |
5Mg | 5Na2O–5MgO–60P2O5–30CaO | 6Na2O–5MgO–55.5P2O5–29.8CaO–3.7Al2O3 |
7Mg | 3Na2O–7MgO–60P2O5–30CaO | 4.9Na2O–7.8MgO–55.8P2O5–29CaO–2.5Al2O3 |
10Mg | 10MgO–60P2O5–30CaO | 9.4MgO–57.7P2O5–31.2CaO–1.7Al2O3 |
Sample ID | νas(PO2)− | νs(PO2)− | νas(PO3)2− End Groups | vas(P–O–P) in Large Rings | vas(P–O–P) in Chains | vs(P–O–P) | v(O–P–O) in (PO2)− Modes |
---|---|---|---|---|---|---|---|
0Mg | 1296 | 1126 | 1094 | 956 | 910 | 758 | 492 |
5Mg | 1304 | 1122 | 1094 | 950 | 918 | 758 | 486 |
7Mg | 1312 | 1126 | 1088 | 960 | 914 | 764 | 494 |
10Mg | 1314 | 1128 | 1086 | 958 | 916 | 760 | 492 |
References | [28,29] | [28,29] | [28,29] | [28] | [28,30,31,32] | [30,31,32] | [30] |
IDs | σDC at 473 K (Scm−1) | EA (eV) ±0.001 | lnσ0 (KScm−1) ±0.01 |
---|---|---|---|
0Mg | 4.21 × 10−11 | 1.267 | 13.38 |
5Mg | 1.38 × 10−11 | 1.273 | 12.41 |
7Mg | 8.22 × 10−12 | 1.276 | 11.99 |
10Mg | 4.34 × 10−12 | 1.256 | 10.86 |
Sample ID | Tg (°C) | Tcr onset (°C) | Tcr middle (°C) | S (°C) |
---|---|---|---|---|
0Mg | 447 | 646 | 708 | 199 |
5Mg | 464 | 655 | 735 | 191 |
7Mg | 473 | 662 | 779 | 189 |
10Mg | 522 | 697 | 748 | 175 |
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Wójcik, N.A.; Ali, S.; Karczewski, J.L.; Jonson, B.; Bartmański, M.; Barczyński, R.J. DC and AC Conductivity, Biosolubility and Thermal Properties of Mg-Doped Na2O–CaO–P2O5 Glasses. Materials 2021, 14, 2626. https://doi.org/10.3390/ma14102626
Wójcik NA, Ali S, Karczewski JL, Jonson B, Bartmański M, Barczyński RJ. DC and AC Conductivity, Biosolubility and Thermal Properties of Mg-Doped Na2O–CaO–P2O5 Glasses. Materials. 2021; 14(10):2626. https://doi.org/10.3390/ma14102626
Chicago/Turabian StyleWójcik, Natalia Anna, Sharafat Ali, Jakub Lech Karczewski, Bo Jonson, Michał Bartmański, and Ryszard Jan Barczyński. 2021. "DC and AC Conductivity, Biosolubility and Thermal Properties of Mg-Doped Na2O–CaO–P2O5 Glasses" Materials 14, no. 10: 2626. https://doi.org/10.3390/ma14102626