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Dina da Costa Reis, The materials, technique, conservation treatment and after-care of interior de um convento, Lisboa, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2011.
This thesis concerns the study of the materials and techniques of the painting on canvas “Interior de um Convento” belonging to the Portuguese monument Pena National Palace (PNP) and the description of the conservation treatment carried out. The study required the use of several examination and analysis tools such as OM (Optical Microscopy), UV (ultraviolet) and IR (infrared) photography, µ-EDXRF (Energy Dispersive X-ray Fluorescence), µ-Raman (Raman spectroscopy) µ-FTIR (Fourier Transform Infrared Spectroscopy) and SEM-EDX (Electron Scanning Microscopy with Energy Dispersive X-ray Spectroscopy). The conservation treatment focused on minimal intervention with the purpose of maintaining the integrity of a nineteen century painting that has never been restored until the present date. Simultaneously, a project to investigate the best back and front protection system for the PNP’s paintings collection was initiated. Relative Humidity (RH) and temperature fluctuations were measured in the Palace and inside the half-closed and fully closed systems used to protect twelve model paintings constructed for the purpose. The objective was to choose the best protection system for dampening RH and temperature fluctuations while preventing the risk of mould occurrence. The preliminary results (4 months of readings) showed that the risk of mould growth requires further study for in a more prolonged period which encompasses seasonal changes.