Unmixing inducing polymerization of a sodium-molybdenum borosilicate network
Pereira L, Schuller S, Donatini A, Wadsworth FB, Neuville DR, Dingwell DB, de Ligny D (2025)
Publication Type: Journal article
Publication year: 2025
Journal
Book Volume: 381
Article Number: 137776
DOI: 10.1016/j.matlet.2024.137776
Abstract
Glass network polymerization critically influences rheological behavior and with it the kinetics and dynamics of nuclear waste immobilization. Molybdenum-bearing borosilicate melts may undergo unmixing and rheological changes, which is dominantly controlled by the associated chemical modifications of the melt network. Here, we obtain in-situ (500–940 °C) Raman spectra to probe structural changes of a sodium-molybdenum borosilicate melt undergoing unmixing. The extraction of alkali and molybdenum to form droplets induces polymerization of the residual borosilicate network. Conversely, the opposite phenomenon is observed during droplet re-dissolution. This work provides new insights into the polymerization of a molybdenum-bearing borosilicate composed of two composition sets due to a miscibility gap and has direct contributions for the immobilization of nuclear wastes.
Authors with CRIS profile
Involved external institutions
Ludwig-Maximilians-Universität (LMU)
Germany (DE)
University of Montpellier / Université Montpellier
France (FR)
Paris Institute of Earth Physics / Institut de Physique du Globe de Paris (IPGP)
France (FR)
Durham University
United Kingdom (GB)
Germany (DE)
University of Montpellier / Université Montpellier
France (FR)
Paris Institute of Earth Physics / Institut de Physique du Globe de Paris (IPGP)
France (FR)
Durham University
United Kingdom (GB)
How to cite
APA:
Pereira, L., Schuller, S., Donatini, A., Wadsworth, F.B., Neuville, D.R., Dingwell, D.B., & de Ligny, D. (2025). Unmixing inducing polymerization of a sodium-molybdenum borosilicate network. Materials Letters, 381. https://doi.org/10.1016/j.matlet.2024.137776
MLA:
Pereira, Luiz, et al. "Unmixing inducing polymerization of a sodium-molybdenum borosilicate network." Materials Letters 381 (2025).
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