| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 6.52 MB | Adobe PDF |
Abstract(s)
Este trabalho teve como objetivos desenvolver duas vertentes: por um lado, o estudo histórico, artístico, técnico e material de duas pinturas sobre tela, assim como realizar as intervenções de conservação e restauro, previamente planeadas, proceder a uma revisão das metodologias usadas para o tratamento de rasgões e a realização de ensaios para a comparação de diferentes adesivos e a sua aplicação em telas de algodão e de linho.
No que se refere às duas obras, provenientes da ilha Terceira, do Arquipélago dos Açores, uma refere-se a um retrato equestre de D. Miguel I, executada a óleo sobre tela, provavelmente após 1802-1866. A segunda consiste numa pintura que retrata São José com o menino ao colo, realizada provavelmente com um aglutinante aquoso, assinada por Valentina e datada de 1926. Ambas foram estudadas do ponto de vista histórico, estilístico, formal e iconográfico. Tendo em vista o estudo material e técnico das obras, procedeu-se à sua documentação fotográfica e observação das suas características organoléticas, tendo sido este complementado, apenas no caso do retrato equestre de D. Miguel I, com um estudo analítico.
O estudo laboratorial teve por objetivo a identificação de pigmentos, cargas e aglutinantes, recorrendo a diversas técnicas analíticas; microscopia ótica (MO), microscopia eletrónica de varrimento com espectroscopia dispersiva de energia de raios X (SEM-EDX) e microespectroscopia de infravermelho com transformada de Fourier (μ-FTIR).
Após recolhida a informação analítica, que permitiu um melhor conhecimento dos materiais constituintes, foi planeada a estratégia de conservação e restauro mais adequada a cada caso, a qual foi levada a cabo, conforme se encontra exposta na presente dissertação.
Relativamente ao tratamento de rasgões, que constituiu o caso de estudo deste trabalho, este teve como objetivos, compreender as técnicas mais adequadas para o sucesso deste tipo de procedimentos, tendo como ponto de partida as telas de algodão, que constituem o suporte das obras em estudo. Para tal, prepararam-se provetes em algodão e em linho, que foram submetidos a testes com vários adesivos, aquosos e não aquosos, cujos resultados foram comparados com a informação disponível em estudos anteriores.
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.
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.
Description
Keywords
Pintura de cavalete Telas Rasgão Algodão Linho União de rasgões D. Miguel I São José Easel painting Canvas Tear Cotton Linen Tear mending St Joseph