New nanomaterials for protecting and consolidating stone
Inorganic nanoparticles (such as Ag, Si Oferrites and other metal oxides) due to their unique physico-chemical characteristics, such as cohesive forces arising from high surface area, photocatalytic effect, colour tone modification, good optical properties, higher penetration depth, thermal expansion coefficient, etc., exhibit improved performance over traditional chemical compounds for the conservation field [3,4].
In fact all cultural heritage undergoes aging processes with final degradation effects, due to their intrinsic material properties and deterioration phenomena, which are influenced by environmental conditions such as climate, pollution, biological agents, and mechanical stresses.coating, adhesive, water repellent and biocide materials).Nowadays the application of nanomaterials and nanotechnology is enabling new functionalities that promise to improve the properties of traditional commercial products.In order to slow down these degradation processes it is necessary to carry out conservative interventions, consisting in restoration and preventive treatments.So far, conservation science focused on chemical compounds, in general polymers and copolymers, able to consolidate and protect the artistic substrate (e.g.
SEM micrographs were used to check the results with nanoparticles at different concentration (fig.1) and the selected dispersions are shown in Table 1. The nanocomposite performance was tested after submitting all the specimens to accelerated weathering by artificial sunlight and freeze-thaw cycles.