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Recolector de Ciencia Abierta, RECOLECTA
Bachelor thesis . 2024
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Disolventes verdes: D-Limoneno, Carbonato de propileno y DBE

Authors: Collazo Inglesini, Macarena Belén;

Disolventes verdes: D-Limoneno, Carbonato de propileno y DBE

Abstract

[spa] En los procesos de limpieza de obras policromadas se utilizan habitualmente mezclas de disolventes provenientes de fuentes no renovables, que suelen ser contaminantes o tóxicas para el ser humano y perjudiciales para el medio ambiente. En la búsqueda de una alternativa más ecológica y sostenible se realiza una reseña bibliográfica de los disolventes verdes que actualmente están en el mercado y son usados en restauración. Se realiza una recopilación de sus principales usos y características obteniendo como resultado una tabla comparativa. A partir de esta tabla y de casos de estudio se eligen tres disolventes (D-Limoneno, Carbonato de propileno y DBE) como alternativa a la tríada de disolventes del Test de Cremonesi (Isooctano, Acetona y Etanol). La efectiva remoción de sustancias filmógenas de ambas tríadas se comprueba mediante observaciones visibles y mediante fluorescencia inducida por rayos UV, utilizando un microscopio digital de superficie, en muestras preparadas con barniz dammar, goma laca, Paraloid®, Varnish Regal Gloss y Acril 33. También se realizan pruebas sobre una obra original que presentaba un barniz oxidado de resina colofonia. El resultado permitió observar que la tríada verde puede utilizarse como una buena alternativa a los disolventes del Test de Cremonesi, y que el disolvente DBE presenta las mejores características por ser menos agresivo para la obra, más sostenible para el medio ambiente y menos tóxico para el restaurador.

[eng] In the cleaning processes of polychrome works, mixtures of solvents from non-renewable sources are usually used, which are usually pollutants or toxic to humans and harmful to the environment. In the search for a more ecological and sustainable alternative, a bibliographic review of the green solvents currently on the market and used in restoration is made. A compilation of their main uses and characteristics is made, resulting in a comparative table. Based on this table and case studies, three solvents (D-Limonene, Propylene Carbonate and DBE) are chosen as an alternative to the triad of solvents of the Cremonesi Test (Isooctane, Acetone and Ethanol). The effective removal of filmogenic substances of both triads is verified by visible observations and by UV-induced fluorescence, using a digital surface microscope, on samples prepared with dammar varnish, shellac, Paraloid®, Varnish Regal Gloss and Acril 33. Tests are also carried out on an original work that presented an oxidized rosin resin varnish. The results showed that the green triad can be used as a good alternative to the solvents of the Cremonesi test, and that the DBE solvent has the best characteristics as it is less aggressive for the work, more sustainable for the environment and less toxic for the restorer.

Treballs Finals de Grau de Conservació-Restauració de Béns Culturals. Facultat de Belles Arts. Universitat de Barcelona, Curs: 2023-2024, Tutor: Martínez Gil, Esther

Country
Spain
Related Organizations
Keywords

Green chemistry, Dissolvents, Química verda, Bachelor's theses, Solvents, Treballs de fi de grau, Conservation and restoration, Conservació i restauració

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green