This dissertation had as objectives to develop two aspects: on the one hand, the study historical, artistic, technical and material of two paintings on canvas, as well as performing an intervention of conservation and restoration, planned in advance, undertake a review of the methodology used for the treatment of tear mending and testing for the comparison of different adhesives and its application in cotton and linen canvas. As regards the two paintings, from Terceira Island, in the Azores islands, the first one refers to an equestrian representation of D. Miguel I, oil on canvas, probably painted around 1802-1866. The second painting portrays St Joseph with the child at his breast, painted probably with a binder aqueous medium, signed Valentina and dated 1926. Both were studied from a historical, stylistic, formal and iconographic point of view. In view of the material and technical study of the works of art, began a photographic documentation and observation of their organoleptic characteristics, having been this complemented, only in the case of the equestrian portrait of D. Miguel I, with an analytical study. The laboratorial study had as objective the identification of pigments, loads and binders, using a variety of analytical techniques; optical microscopy (OM), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX) and Fourier transform infrared spectroscopy (μ-FTIR). After the analytical information collected that enabled a better knowledge of the constituent materials, a strategy of conservation and restoration was planned, appropriate to each case, which has been carried out, as it is exposed in this dissertation. Relating to the treatment of tear mending, which is the case of study of this paper, had as objectives to understand the most suitable techniques for the success of this kind of procedures, taking as a starting point the cotton canvas, which constitutes the support of the two paintings. For such, there were prepared test pieces in cotton and linen, which were submitted to tests with several adhesives, aqueous non aqueous, whose results were compared with the information available in previous studies.
Date of Award | 14 Jul 2016 |
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Original language | Portuguese |
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Awarding Institution | - Universidade Católica Portuguesa
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Supervisor | Maria Aguiar (Supervisor) & José Carlos Frade (Co-Supervisor) |
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- Easel painting
- Canvas
- Tear
- Cotton
- Linen
- Tear mending
- St Joseph
- Mestrado em Conservação e Restauro de Bens Culturais
Tratamento de rasgões e lacunas em suporte de tela: retrato equestre de D. Miguel e representação de São José
Branco, C. D. B. B. M. (Student). 14 Jul 2016
Student thesis: Master's Thesis