Synthesis, characterization, and application of PHB-based gels for cultural heritage conservation

Varga, Zsuzsanna (2017) Synthesis, characterization, and application of PHB-based gels for cultural heritage conservation. [Laurea magistrale], Università di Bologna, Corso di Studio in Chimica industriale [LM-DM270], Documento ad accesso riservato.
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The aim of my master thesis is developing novel, greener approaches for the cleaning of artworks: such treatment consists in the removal of old varnish layers which tend to discolor or darken with time, thus allowing replacement with a new protecting coat. While protocols presently applied can be effective in the cleaning of the artworks, none of them take into account conservators’ health safety and environmental issues. Thus, using biomass-derived components, which are non-toxic and reusable and/or compostable might bring into the heritage conservation an additional awareness about safety and environmental claiming. The laboratory work for the thesis is a collaborative work between different groups. The biggest part of the work was at the Polymer group where gels were synthesized using Polyhydroxybutyrate (PHB) from sustainable resources and green solvents. The use of the gels might help to reduce the volatilization of solvents and contributes to the localization of the cleaning action. After the preparation of the gels, different characterization methods were used in order to estimate their properties and shelf-life. Finally, the work was completed on the application of the gels on sculpture, coated with undesired layers to be removed. Here, pre-mapping of the areas of interest was realized with different optical techniques, followed by the application of the gels for the cleaning and analyzing the effectiveness of cleaning.

Tipologia del documento
Tesi di laurea (Laurea magistrale)
Autore della tesi
Varga, Zsuzsanna
Relatore della tesi
Correlatore della tesi
Corso di studio
Advanced Spectroscopy in Chemistry
Ordinamento Cds
Parole chiave
PHB gels conservation green solvents polymer chemistry analytical chemistry spectroscopy
Data di discussione della Tesi
12 Ottobre 2017

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