Analytical study for evaluating the condition of leather binding of a historical manuscript / Gomaa Abdel-Maksoud in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 108, N° 3 (05-06/2024)

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 108, N° 3 (05-06/2024) . - p. 113-121 Titre : Analytical study for evaluating the condition of leather binding of a historical manuscript Type de document : texte imprimé Auteurs : Gomaa Abdel-Maksoud, Auteur ; Muhammad El-Qubaisy, Auteur ; Usama Mohammad Rashed, Auteur Année de publication : 2024 Article en page(s) : p. 113-121 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antiquités (objets anciens) -- Analyse Cuirs et peaux -- Détérioration Manuscrits Reliure Tags : 'Reliure  en  cuir'  'Manuscrit  historique'  'Période  ottomane'  Détérioration  Documentation  'Techniques  analytiques' Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : There are a large number of leather bound paper manuscripts in the Al-Azhar Library. These manuscripts suffer from deterioration because of unsuitable environmental conditions in their previous or current preservation places. This study aims to evaluate the condition of the leather binding of a copied historical manuscript of "The Low of Medicine by Ibn Sina" dated back to 1294 AH - 1877 AD which is preserved in the Al-Azhar Library. Digital microscopy and AutoCad were used to document the aspects of deterioration. The analytical techniques used for the explanation of the deterioration mechanism include the investigation of the surface morphology using digital and Scanning Electron Microscope (SEM) and analysis by Energy Dispersive X-ray (EDX), pH measurement, and Attenuated Total Reflectance/Fourier Transform Infrared (ATR-FTIR). The results showed that the common aspects of deterioration were various types of stains, insect holes, detachment, tears, and erosion. The analytical techniques showed that the studied leather binding suffered from adverse deterioration and chemical instability. It also suffers from a decreased pH value, which affects the chemical instability. The presence of some elements, such as calcium, silicon, and iron, indicates the influence of pollution from the various preservation environments in which the manuscript’s binding was preserved. The study recommends providing conservation treatment and preventive conservation for the leather binding of the manuscript studied. Note de contenu : - Materials - Methods - Documentation - Investigation and analysis Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41136 [article]

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The evaluation of DBD plasma technique for removing carbon stain from leather artifacts / Muhammad El-Qubaisy in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 4 (07-08/2018)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 4 (07-08/2018) . - p. 210-218 Titre : The evaluation of DBD plasma technique for removing carbon stain from leather artifacts Type de document : texte imprimé Auteurs : Muhammad El-Qubaisy, Auteur ; Usama Mohammad Rashed, Auteur ; Gomaa Abdel-Maksoud, Auteur Année de publication : 2018 Article en page(s) : p. 210-218 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Conservation Cuirs et peaux -- Propriétés mécaniques Evaluation visuelle Fourier, Spectroscopie infrarouge à transformée de Microscopie Nettoyage Plasma à pression atmosphérique Un plasma à pression atmosphérique (ou plasma à PA ou plasma froid) est le nom donné à une catégorie spéciale de plasma pour lequel la pression approche celle de l’atmosphère. Le plasma à pression atmosphérique marque une nette différence avec le plasma basse et haute pression. En effet, contrairement à ces derniers aucune enceinte de traitement n'est nécessaire. Ce type de plasma peut donc être utilisé directement sur ligne de production, évitant ainsi l'utilisation de vide qui est extrêmement onéreuse. Technique des plasmas Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In recent years, plasma technology has been successfully used in the conservation of cultural heritage. The removal of soot from historical bookbinding surfaces through a cold plasma cleaning technique is an important application. This study aims to test the efficiency of using atmospheric pressure cold plasma on cleaning and removing soot from historical leather bookbinding surfaces. Atmospheric pressure Dielectric Barrier Discharge (DBD) cold plasma in an oxygen environment was applied to modern leather samples that were contaminated with carbon and artificially aged. The results have been evaluated using several techniques including visual assessment, digital microscopy, Scanning Electron Microscope (SEM) with (EDAX), Fourier Transform lnfrared Spectroscopy with Attenuated Total Reflection (FTIR-ATR), mechanical properties, and colour change by UV spectrophotometer. The results have revealed that, the best removal of a soot stain through DBD cold plasma was found at 17.35W plasma power and 2 minutes exposure time. Note de contenu : - MATERIALS AND METHODS : samples - General plasma reactor set-up - Investigation techniques - RESULTS AND DISCUSSON / Electrical characteristics of DBD - Visual assessment - Digital microscope - SEM analysis - EDAX analysis - Change of colour - Mechanical properties (tensile strength and elongation) - Fourier Transform Infrared Spectroscopy (FTIR-ATR) En ligne : https://drive.google.com/file/d/1iVjTS09HTPjlLwTKiJ6om6LQFm10_tSL/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30905 [article]

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