Condition assessment of a mamluk historical illuminated leather binding at the library of Mashiakht El-Azhar, egypt / Gomaa Abdel-Maksoud in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 5 (09-10/2021)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 105, N° 5 (09-10/2021) . - p. 248-256 Titre : Condition assessment of a mamluk historical illuminated leather binding at the library of Mashiakht El-Azhar, egypt Type de document : texte imprimé Auteurs : Gomaa Abdel-Maksoud, Auteur ; Mostafa Abdel-Hamied, Auteur ; Ahmed A. M. Abdelhafez, Auteur Année de publication : 2021 Article en page(s) : p. 248-256 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antiquités (objets anciens) -- Analyse Cuirs et peaux -- Détérioration Reliure Index. décimale : 668.5 Parfums et cosmétiques Résumé : This study focuses on the evaluation and assessment of the condition of a deteriorated illuminated leather binding dated back to the Egyptian Mamluk period (1250-1517 H) at library of Mashiakht El-Azhar, Egypt. Some analytical techniques have been used in order to identify the decorative materials, evaluate the condition, and study deterioration mechanisms of this leather binding. Different microscopes (digital USB, stereomicroscope and scanning electron microscope (SEM) with Energy Dispersive X-Ray analysis (EDX) were used. Additionally, the analysis by portable X-ray fluorescence (pXRF) was used for the qualitative and quantitative analysis of elements in the golden layer. Moreover, pH measurement, and attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) analysis has been used to explain the chemical deterioration of historical leather and to identify the decorative agents. On the basis of investigation by different microscopes, the golden colour on the surface of historical leather cover has been gilded, and not painted. The results of investigation by microscopy for the illuminated and non-illuminated leather parts showed different signs of deterioration such as different kinds of cracks, holes, missing parts, detachment of some parts in the gold layer, fungal hyphae, accumulated dust, fragility of the gold layer etc. The elemental analysis by EDX and pXRF showed that the golden colour mainly consisted of brass with traces of elemental gold. Additionally, the elemental analysis revealed the presence of elemental sulfur which may be due to the air pollutants in the surrounding environmental conditions at Al-Azhar library, Egypt. The analysis by pH measurement and ATR-FTIR revealed that the leather cover suffered from acid hydrolysis mechanisms. Therefore, conservation procedures (conservation treatment and preventive conservation) are needed in the future work. Note de contenu : - MATERIALS AND METHODS : Historical background of the Mamluk illuminated leather cover of a manuscript - Documentation process - Analytical procedures - RESULTS AND DISCUSSION : Documentation processes - Table 1 : The deterioration aspects noticed on the illuminated leather cover - Analytical methods - Table 2 : The results of EDX analysis for the historical leather cover En ligne : https://drive.google.com/file/d/1MOEGxbZPbXl0igp9Hc62lAWqDgmQ5uPQ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36351 [article]

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