Szczegóły publikacji
Opis bibliograficzny
Effect of sulfur addition on glass-forming ability, structure and thermal stability of multicomponent silicate-phosphate glasses / Anna BEREZICKA, Justyna SUŁOWSKA, Piotr JELEŃ, Sebastian KOMAREK, Magdalena SZUMERA // Journal of Thermal Analysis and Calorimetry ; ISSN 1388-6150. — Tytuł poprz.: Journal of Thermal Analysis ; ISSN: 0368-4466. — 2024 — vol. 149 iss. 19, s. 10405–10427. — Bibliogr. s. 10426–10427, Abstr. — Publikacja dostępna online od: 2024-03-16
Autorzy (5)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 156799 |
|---|---|
| Data dodania do BaDAP | 2025-01-13 |
| Tekst źródłowy | URL |
| DOI | 10.1007/s10973-023-12866-y |
| Rok publikacji | 2024 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Journal of Thermal Analysis and Calorimetry |
Abstract
The incorporation of sulfate anions in a suitable host matrix has proven to be a challenging task for glass technologists around the world. Therefore, the present work reports on the solubility and retention of sulfate species, as an invaluable macronutrient for plants, in a multicomponent silicate-phosphate glasses from the SiO2–P2O5–K2O–MgO–CaO–XSO3 system. Glasses containing target [SO4]2− concentrations 0–5 mol.% were synthesized via high-temperature melt-quenching technique, the last stage of which constituted fritting the acquired melt in water. It was observed that this synthesis route broadened the glass-forming range of materials from the studied system, the sulfate capacity of which was determined to be ∼ 2 mol.%. At higher [SO4]2− concentrations, additional sulfur was retained in glasses as crystalline inclusions of sulfate salt. An in-depth insight into the materials’ structure revealed that sulfate species exist in the vitreous matrix as units not bonded to either the silico-oxygen or phosphor-oxygen subnetworks, and their addition leads to a gradual increase in the polymerization degree of the former, and to the opposite effect as regards the latter. Thermal analysis of the tested glasses supported the structural studies and demonstrated that the addition of sulfur initially reduces materials’ glass stability, leading to its increase after SO3 content reaches 1 mol.%. It was also shown that [SO4]2− species affect local environments of Si and Mg atoms indirectly, inducing changes in the medium-range structure beyond their first coordination spheres presumably involving the rearrangement of potassium cations within the vitreous matrix.
