| Full text | |
| Author(s): |
Del Lama, Eliane A.
[1]
;
Tirello, Regina A.
[2, 3]
;
De Andrade, Fabio R. D.
[1]
;
Kihara, Yushiro
[1]
Total Authors: 4
|
| Affiliation: | [1] Univ Sao Paulo, Inst Geociencias, BR-05508080 Sao Paulo - Brazil
[2] Univ Sao Paulo, Ctr Preservacao Cultural, BR-01324001 Sao Paulo - Brazil
[3] Univ Estadual Campinas, Fac Engn Civil Arquitetura & Urbanismo, BR-13083852 Campinas, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Anais da Academia Brasileira de Ciências; v. 81, n. 1, p. 115-126, MAR 2009. |
| Web of Science Citations: | 2 |
| Abstract | |
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. (AU) | |