Diagnóstico de duas peças têxteis do Museu Diocesano de Santarém: Uma abordagem multi- Analítica

The present work aim was to study two composite textile pieces from Santarem Diocesan Museum, including their historic context, their conservation condition and the characterization of their constituent parts, which established the date of production. Both pieces belonged to the First Bishop of Daman (1840-1900) and were selected for their historic interest and originality, and for representing a case study in terms of materials, techniques and decoration. They are also a good example of the conservation problems that can occur in liturgical textiles. The diagnosis was extended using optical microscopy, Fourier transform infrared spectroscopy, energy dispersive X-ray fluorescence and Raman spectroscopy. These techniques allowed the identification of the fibres, binder, metals and pigments, confirming that the pieces date back to the late nineteenth century. Among the main forms of degradation, it was observed: structural deformations, dirt and material losses, not only in areas with fabric but also with metallic embroidery and painted layers.