The preservation for the safeguarding of the heritage encompasses much more than the conservation and restoration of artistic and historical objects, it goes far beyond the maintenance of these assets, ranging from the in depth study of the materials that constitute the object to the preventive care, aiming to eliminate any existing risk in the surrounding environment that may effect the integrity of these assets, whether in the short, medium or long term. This dissertation aims to characterize the supports of the Patent Letters by studying the morphology of its fibers, type of pulp and its processing, fillers, binders and graphic materials, using in addition to visuals test, the spot tests, exams under ultra violet fluorescence, scanning electron microscopy (SEM EDS) and infrared spectroscopy (FTIR ATR) exams. In an attempt to understand the evolution of the materials that make up theses documents, two patents letters were chosen, one from the 18th century and the other from 19th century, to study the differences in the composition of the papers over the almost hundred years that separate these two selected letters for this study. Furthermore, use the information extracted from this study, together whit the survey of the pathologies found in the analysed objects, in order to design and execute a safe treatment plan, using effective, compatible, inert and reversible materials, within the technical and scientific rigor that this king of job requires. Finally, point which is the best way of storing theses documents, aiming at their preventive conservation, both within the scope of the storage and in roaming, considering that its function as a historical document is to be able to be exhibited to public appreciation and knowledge.
|Date of Award||17 Mar 2021|
- Universidade Católica Portuguesa
|Supervisor||Gonçalo Vasconcelos e Sousa (Supervisor)|
- Graphic documents
- Spot test
- Mestrado em Conservação e Restauro de Bens Culturais