Autor segons l'article: Diaz-Cortes, Andrea; Graziani, Gabriela; Boi, Marco; Lopez-Polin, Lucia; Sassoni, Enrico;
Departament: Història i Història de l'Art
Autor/s de la URV: López-Polin Dolhaberriague, Lucía
Paraules clau: Site Scratch test Scotch tape test Removal Remains Raman Microhardness Hydroxyapatite Ftir Diagenesis Crystals Collagen Coatings Ammonium phosphate
Resum: Aqueous solutions of diammonium hydrogen phosphate (DAP) have been recently proposed for consolidation of archeological bones, as an alternative to traditional products. Here, we investigated several routes to improve the performance of the DAP-based treatment, namely increasing the DAP concentration, adding calcium ions and adding ethanol to the DAP solution. Archaeological bones dated to about 1-0.8 million years ago were used for the tests. After preliminary screening by FTIR microscopy and FEG-SEM among different formulations, confirming the formation of new hydroxyapatite phases, the most promising formulation was selected, namely a 3 M DAP solution. The strengthening ability of this formulation was systematically compared to that of the most widely used commercial consolidant, namely Paraloid B72. The performance of the two treatments was evaluated in terms of Knoop and Vickers microhardness, resistance to scratch and resistance to material loss by peeling off. The results of the study show that the DAP treatment was able to improve the bone surface properties and also the resistance to material loss by peeling off, which is more dependent on in-depth consolidation. Paraloid B72 led to the formation of a layer of acrylic resin on the bone surface, which influenced the mechanical tests. Nonetheless, Paraloid B72 was able to penetrate in depth and substantially decrease the material loss by peeling off, even more effectively than DAP. The results of this study indicate that the potential of the DAP treatment for bone consolidation is confirmed.
Àrees temàtiques: Physics, applied Nanoscience & nanotechnology Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) General materials science General chemical engineering Engenharias ii Chemistry, multidisciplinary Chemical engineering (miscellaneous) Chemical engineering (all)
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: lucia.lopezpolin@urv.cat
Identificador de l'autor: 0000-0002-5810-4115
Data d'alta del registre: 2024-03-03
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Enllaç font original: https://www.mdpi.com/2079-4991/12/18/3163
URL Document de llicència: http://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Nanomaterials. 12 (18):
Referència de l'ítem segons les normes APA: Diaz-Cortes, Andrea; Graziani, Gabriela; Boi, Marco; Lopez-Polin, Lucia; Sassoni, Enrico; (2022). Conservation of Archaeological Bones: Assessment of Innovative Phosphate Consolidants in Comparison with Paraloid B72. Nanomaterials, 12(18), -. DOI: 10.3390/nano12183163
DOI de l'article: 10.3390/nano12183163
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2022
Tipus de publicació: Journal Publications
Repositori URV