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Ioan M, Anghel DF, Gifu IC, Alexandrescu E, Petcu C, Diţu LM, Sanda GA, Bala D, Cinteza LO. Novel Microemulsions with Essential Oils for Environmentally Friendly Cleaning of Copper Cultural Heritage Artifacts. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2430. [PMID: 37686938 PMCID: PMC10490116 DOI: 10.3390/nano13172430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023]
Abstract
Cleaning represents an important and challenging operation in the conservation of cultural heritage, and at present, a key issue consists in the development of more sustainable, "green" materials and methods to perform it. In the present work, a novel xylene-in-water microemulsion based on nonionic surfactants with low toxicity was obtained, designed as low-impact cleaning agent for metallic historic objects. Phase diagram of the mixtures containing polyoxyethylene-polyoxypropilene triblock copolymer Pluronic P84 and D-alpha-tocopheryl polyethylene glycol 1000 succinate (TPGS) as surfactants, water, ethanol and xylene was studied, and a microemulsion with low surfactant content was selected as suitable cleaning nanosystem. Essential oils (EOs) from thyme and cinnamon leaf were added to the selected microemulsion in order to include other beneficial properties such as anticorrosive and antifungal protection. The microemulsions with or without EOs were characterized by size, size distribution and zeta potential. The cleaning efficacy of the tested microemulsions was assessed based on their ability to remove two types of artificial dirt by using X-ray energy dispersion spectrometry (EDX), scanning electron microscopy (SEM), contact angle measurements and color analysis. Microemulsions exhibit high capacity to remove artificial dirt from model copper coupons in spite of very low content of the organic solvent. Both thyme and cinnamon oil loading microemulsions prove to significantly reduce the corrosion rate of treated metallic plates compared to those of bare copper. The antifungal activity of the novel type of microemulsion was evaluated against Aspergillus niger, reported as main treat in biocorrosion of historic copper artifacts. Application of microemulsion with small amounts of EOs on Cu plates inhibits the growth of fungi, providing a good fungicidal effect.
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Affiliation(s)
- Mihaela Ioan
- “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Spl. Independentei, 060021 Bucharest, Romania; (M.I.); (D.F.A.)
| | - Dan Florin Anghel
- “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Spl. Independentei, 060021 Bucharest, Romania; (M.I.); (D.F.A.)
| | - Ioana Catalina Gifu
- Polymer Department, National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania; (I.C.G.); (E.A.)
| | - Elvira Alexandrescu
- Polymer Department, National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania; (I.C.G.); (E.A.)
| | - Cristian Petcu
- Polymer Department, National Institute for Research and Development in Chemistry and Petrochemistry—ICECHIM, 202 Spl. Independentei, 060021 Bucharest, Romania; (I.C.G.); (E.A.)
| | - Lia Mara Diţu
- Microbiology Department, Faculty of Biology, University of Bucharest, 030018 Bucharest, Romania;
| | - Georgiana Alexandra Sanda
- Physical Chemistry Department, University of Bucharest, 4–12 Blv. Regina Elisabeta, 030018 Bucharest, Romania; (G.A.S.); (D.B.)
| | - Daniela Bala
- Physical Chemistry Department, University of Bucharest, 4–12 Blv. Regina Elisabeta, 030018 Bucharest, Romania; (G.A.S.); (D.B.)
| | - Ludmila Otilia Cinteza
- Physical Chemistry Department, University of Bucharest, 4–12 Blv. Regina Elisabeta, 030018 Bucharest, Romania; (G.A.S.); (D.B.)
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Cinnamon: An antimicrobial ingredient for active packaging. Food Packag Shelf Life 2023. [DOI: 10.1016/j.fpsl.2023.101026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Surface treatment and corrosion protection of mild steel by the oily extracts of olive mill waste cake. J APPL ELECTROCHEM 2023. [DOI: 10.1007/s10800-023-01856-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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Lazrak J, Ech-chihbi E, Salim R, Saffaj T, Rais Z, Taleb M. Insight into the corrosion inhibition mechanism and adsorption behavior of aldehyde derivatives for mild steel in 1.0 M HCl and 0.5 M H2SO4. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Ouakki M, Galai M, Aribou Z, Benzekri Z, Assiri EHE, Dahmani K, Ech-chihbi E, Abousalem AS, Boukhris S, Cherkaoui M. Detailed experimental and computational explorations of pyran derivatives as corrosion inhibitors for mild steel in 1.0 M HCl: Electrochemical/surface studies, DFT modeling, and MC simulation. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Dahmani K, Galai M, Ouakki M, Elgendy A, Ez-Zriouli R, Lachhab R, Briche S, Cherkaoui M. Corrosion inhibition of copper in sulfuric acid via environmentally friendly inhibitor (Myrtus Communis): Combining experimental and theoretical methods. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.117982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Lazrak J, Ech-chihbi E, El Ibrahimi B, El Hajjaji F, Rais Z, Tachihante M, Taleb M. Detailed DFT/MD simulation, surface analysis and electrochemical computer explorations of aldehyde derivatives for mild steel in 1.0 M HCl. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127822] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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