What's Happening?
A recent study has examined the chemical and physical transformations of verdigris, a bluish-green acetate pigment, in wall paintings. The research focused on the pigment's interaction with various binders,
such as egg yolk and rabbit glue, and its application in different painting techniques like a secco, mezzo-fresco, and fresco. The study found that the pigment's chemical composition, primarily consisting of hoganite, undergoes significant changes when mixed with lime water or lime paste. These transformations result in various color and texture alterations, with the formation of new compounds and morphologies. The research provides insights into the degradation processes of verdigris in historical artworks.
Why It's Important?
Understanding the chemical transformations of verdigris is crucial for the conservation and restoration of historical artworks. Verdigris has been widely used in wall paintings, and its degradation can affect the visual and structural integrity of these artworks. The study's findings can inform conservation strategies by identifying the conditions that lead to pigment alteration and degradation. This knowledge is essential for preserving cultural heritage and ensuring the longevity of historical paintings. Additionally, the research contributes to the broader field of art conservation science, offering valuable data on the interactions between pigments and binders.
