Nano-hydroxyapatite for the conservation of Serena stone

Maduka Lankani Weththimuni, Giacomo Fiocco, Francesca Volpi, Marco Malagodi, Maurizio Licchelli

Abstract

In past decades, interest in using nanomaterials for the preservation of valuable cultural heritages was rapidly increased due to their excellent properties. In the present study, a biomimic method for the consolidation of sandstone (i.e. Serena stone) by hydroxyapatite was investigated. The strategy is to mimic the growth of bone like crystals: calcium (as Ca(OH)2 nanoparticles) and phosphorus (as diammonium hydrogen phosphate) are introduced into stone substrate and then, mineralized in-situ at room temperature. Before the treatments, Ca(OH)2 nanoparticles have been synthesized and characterized by different methods: scanning electron microscopy (SEM), transmission electron microscopy (TEM) and dynamic light scattering (DLS). In addition to that, the conservation efficacy was ascertained by measuring physical-structural properties, especially the resistance to weathering induced by salt crystallization.

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IMEKO-MetroArchaeo-2023-115.pdf

DOI

10.21014/tc4-ARC-2023.115

IMEKO TC

TC4 - Measurement of Electrical Quantities

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