Annelies van loon’s scientific contributions

... More punctual analysis by ER-FTIR ( Figure S3b) suggested the presence of metal soaps aggregates (calcium stearate): bands at 1575 and 1540 cm À1 are assigned to ν as COO À whereas the band at 1465 cm À1 is related to ν s COO À (Otero et al., 2014;Vichi et al., 2018). Generally, metal soaps are degradation products in painting since they originate from the reaction between metal cations of inorganic pigments and fatty acid fractions of drying oils used as binders (Centeno & Mahon, 2019;Cotte et al., 2017;Iorio et al., 2019Iorio et al., , 2021Noble, 2005;Otero et al., 2014;Sodo et al., 2018). Calcium could arise from the underlying preparatory layer. ...

Reference:

Destructuring a shield to rebuild the history: The case of the painted wooden shield from the battle of Lepanto in Marino (Rome, Italy)