Study of mural paintings by Fulvio Pennacchi in São Paulo City by mineralogical techniques

Anais da Academia Brasileira de Ciências

Eliane A. Del Lama²  Regina A. Tirello¹  Fábio R.d. De Andrade²  Yushiro Kihara² 

[1] ,Universidade de São Paulo Instituto de Geociências São Paulo SP ,Brasil

关键词: efflorescence;    frescoes;    mineralogical analysis;    Pennacchi;    Chapel of the Hospital das Clínicas;    eflorescência;    afresco;    análises mineralógicas;    Pennacchi;    Capela do Hospital das Clínicas;   

DOI  :  10.1590/S0001-37652009000100012

来源: SciELO

【 摘 要 】

The present research deals with two mural paintings made in 1947 with the fresco technique by Fulvio Pennacchi in the Catholic Chapel of the Hospital das Clínicas (São Paulo City, Brazil), namely the Virgin Annunciation and the Supper at Emmaus. This study regards the materials and painting techniques used by the artist, based on historical research,on in situ observations and laboratory analytical techniques (stereomicroscopy,scanning electron microscopy with an energy dispersive spectrometer, X-ray diffractometry, electron microprobe, images obtained with UV-light), aiming to improve the methods of characterization of objects of our cultural heritage, and to enhance its preservation accordingly. The results lead to the identification of the plaster components and of distinct layers in the frescoes, besides further information on grain size, impurities and textures, composition of pigments, and features of deterioration, such as efflorescences. The degree of degradation of the murals painting was assessed by this way. Our data suggest that a single layer of plaster was used by Pennacchi, as a common mortar with fine- and medium-grained aggregates. Differences in texture were obtained by adding gypsum to the plaster.

【 授权许可】

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