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Abstract

Surface Consolidation of Model Stone Samples with Carbonated Hydroxyapatite †

by
Lorena Iancu
1,2,*,
Rodica-Mariana Ion
1,2,
Ramona Marina Grigorescu
1,
Paul Niculae Ghioca
1,
Madalina Elena David
1,
Ramona Elena Andrei
1,
George Ionut Radu
1,
Mircea Ioan Filipescu
1,
Raluca Ioana Suica-Bunghez
1,
Cristian Andi Nicolae
1,
Raluca Somoghi
1,
Bogdan Trica
1 and
Sofia Teodorescu
3
1
National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM Bucharest, 202 Spl. Independentei, 060021 Bucharest, Romania
2
Doctoral School of Materials Engineering Department, Valahia University, 13th Aleey Sinaia, 130004 Targoviste, Romania
3
Institute of Multidisciplinary Research for Science and Technology, Valahia University of Târgoviște, 13th Aleey Sinaia, 130004 Târgoviște, Romania
*
Author to whom correspondence should be addressed.
†
Presented at the 15th International Symposium “Priorities of Chemistry for a Sustainable Development” PRIOCHEM, Bucharest, Romania, 30th October–1st November 2019.
Proceedings 2019, 29(1), 37; https://doi.org/10.3390/proceedings2019029037
Published: 14 October 2019
(This article belongs to the Proceedings of Priorities of Chemistry for a Sustainable Development-PRIOCHEM)
Browse Figure
Versions Notes

Recently, numerous studies have been carried out on various materials with potential applications in the preservation and restoration of cultural heritage objects. Among the studied materials, special attention has been given to hydroxyapatite (HAp) regarding its use as a consolidating agent for various types of artifacts: stone, paper, and wood [1]. The selection of CHAp as a potential material for the protection and consolidation of carbonate stones was based on its low solubility and slow dissolution rate.
Carbonated hydroxyapatite (CHAp) and its metallic derivatives, Me-CHAp (Me=Ag, Sr), as very fine and uniform-sized powder, have been obtained by the nanoemulsion technique and characterized by Raman spectroscopy, thermogravimetric analysis (TGA) and transmission electronic microscopy (TEM). The surfaces of some model stones were consolidated with CHAp and Me-CHAp applied by brushing, immersion and spraying, Figure 1 and colorimetric tests have been correlated with water drop absorption, water repellency, penetration of water measurements and compressive strength.
Some model stones have been treated with these consolidants, and the effectiveness of CHAp and Me-CHAp as inorganic stone consolidants was tested.
The application method and the type of carbonated hydroxyapatite play a very important role in determining the final effects of the consolidating treatment. Based on the obtained results, these consolidants were selected for application on some monument surfaces.

Acknowledgments

This work was supported by a grant of the Romanian Ministry of Research and Innovation, CCCDI—UEFISCDI, project number PN-III-P1-1.2-PCCDI-2017-0476/51PCCDI/2018, within PNCDI III and PN.19.23.03.01.04.

Reference

  1. Ion, R.-M.; Iancu, L.; Vasilievici, G.; Grigore, M.E.; Andrei, R.E.; Radu, G.-I.; Grigorescu, R.M.; Teodorescu, S.; Bucurica, I.A.; Ion, M.-L.; et al. Ion-Substituted Carbonated Hydroxyapatite Coatings for Model Stone Samples. Coatings 2019, 9, 231. [Google Scholar] [CrossRef]
Proceedings 29 00037 g001
Figure 1. Model stone sample treated with metallic carbonated hydroxyapatite (Me-CHAp).
Figure 1. Model stone sample treated with metallic carbonated hydroxyapatite (Me-CHAp).
Proceedings 29 00037 g001

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MDPI and ACS Style

Iancu, L.; Ion, R.-M.; Grigorescu, R.M.; Ghioca, P.N.; David, M.E.; Andrei, R.E.; Radu, G.I.; Filipescu, M.I.; Suica-Bunghez, R.I.; Nicolae, C.A.; et al. Surface Consolidation of Model Stone Samples with Carbonated Hydroxyapatite. Proceedings 2019, 29, 37. https://doi.org/10.3390/proceedings2019029037

AMA Style

Iancu L, Ion R-M, Grigorescu RM, Ghioca PN, David ME, Andrei RE, Radu GI, Filipescu MI, Suica-Bunghez RI, Nicolae CA, et al. Surface Consolidation of Model Stone Samples with Carbonated Hydroxyapatite. Proceedings. 2019; 29(1):37. https://doi.org/10.3390/proceedings2019029037

Chicago/Turabian Style

Iancu, Lorena, Rodica-Mariana Ion, Ramona Marina Grigorescu, Paul Niculae Ghioca, Madalina Elena David, Ramona Elena Andrei, George Ionut Radu, Mircea Ioan Filipescu, Raluca Ioana Suica-Bunghez, Cristian Andi Nicolae, and et al. 2019. "Surface Consolidation of Model Stone Samples with Carbonated Hydroxyapatite" Proceedings 29, no. 1: 37. https://doi.org/10.3390/proceedings2019029037

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