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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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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General bindery shifts to PU reactive hot melt in ADHESIVES AGE, Vol. 37, N° 9 (08/1994)  

[article]  inADHESIVES AGE > Vol. 37, N° 9 (08/1994) . - p. 43-45 Titre : General bindery shifts to PU reactive hot melt Type de document : texte imprimé Année de publication : 1994 Article en page(s) : p. 43-45 Langues : Américain (ame) Catégories : Adhésifs thermofusibles Polyuréthanes Reliure Index. décimale : 668.3 Adhésifs et produits semblables Note de contenu : - Bindery background - How the system works - Benefits of PUR En ligne : https://drive.google.com/file/d/1UtzWnJNOO2RRYRO_iOMxZHCBRTKI0ty_/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20859 [article]

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A survey of current bookbinding leathers : Part 1 : Chemical an physical properties / M. S. Thomson in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 4 (07-08/2002)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 86, N° 4 (07-08/2002) . - p. 163-170 Titre : A survey of current bookbinding leathers : Part 1 : Chemical an physical properties Type de document : texte imprimé Auteurs : M. S. Thomson, Auteur ; Geoffrey E. Attenburrow, Auteur ; I. Ionnadis, Auteur ; S. Jeyapalina, Auteur ; T. Lochmuller, Auteur Année de publication : 2002 Article en page(s) : p. 163-170 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Propriétés chimiques Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés physiques Essais de résilience Essais dynamiques Lastomètre Reliure Résistance à la déchirure Résistance à la traction Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Many books spend most of their lives, unused, on library shelves. However, when their owner or the library subscriber wishes to read them they expect the bindings to be in perfectly sound condition. Unlike the majority of products made from leather, bookbindings are expected to last almost indefinitely. That is why when, in the middle of the nineteenth century, it was discovered that large numbers of new bindings were deteriorating rapidly, an explanation was sought. That is also why, over the next century and a half, investigations were made into methods for producing bookbinding leathers with increased resistance to the various agents of deterioration. Care had to be taken, however, to ensure that the materials produced retained the physical characteristics which had made leather the premier choice of bookbinders for hundreds of years. These include ease of paring, easeof moulding, lack of springiness and ability to be tooled. Note de contenu : - CHEMICAL PROPERTIES : Moisture content - Total ash - Loss by washing - Organic loss by washing - Water insoluble salts - Total nitrogen/skin substance - Aluminium content - Aluminium content - CONCLUSIONS - PHYSICAL PROPERTIES : tensile strength - Tear strength - Lastometer test - Resistance To flexing whilst under strain - Softness - Table 1 : Représentative european bookbinding leathers - Table 2 : Chemical test results - Table 3 : Physcal test results En ligne : https://drive.google.com/file/d/1i9PQwHVQSeUY9AaifF5Q-sgM70k8nv87/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39907 [article]

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A survey of current bookbinding leathers - Part 2 - organoleptic properties / R. S. Thomson in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 6 (11-12/2002)

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 86, N° 6 (11-12/2002) . - p. 249-256 Titre : A survey of current bookbinding leathers - Part 2 - organoleptic properties Type de document : texte imprimé Auteurs : R. S. Thomson, Auteur ; T. Codina, Auteur ; F. Ganiari, Auteur ; J. Gopfrich, Auteur ; I. Ionnadis, Auteur ; S. Mehmet, Auteur ; A. Stassinou, Auteur Année de publication : 2002 Article en page(s) : p. 249-256 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Propriétés organoleptiques Evaluation Reliure Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The determination of the overall quality of any type of leather is a subjective assessment depending primarily on the end use to which it will be put. This applies as much to the assessment of bookbinding leathers as to any other material. If one asks a number of bookbinders what makes a good leather, at first sight they each seem to have a different opinion. However, on closer examination these differences appear to arise from how people describe what are complex subjective characteristics rather than actual discrepancies themselves. Individual bookbinders all have personal aesthetic preferences which are associated with the type of grain pattern, colour and the presence or absence of minor surface blemishes. Some bookbinders like to work with skins having a uniform surface appearance. Others prefer more "natural" looking materials. Note de contenu : - Organoleptic Assessment - Table 1 : First stage assessments (in order of priority) - Table 2 : Second stage assessments - Table 3 : Organoleptic assessment results - Table 4 : Organoleptic assessment results Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39845 [article]

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