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Analysis and conservation of an 18th/19th century vegetable-tanned parchment manuscript / Gomaa Abdel-Maksoud in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 2 (03-04/2011)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 2 (03-04/2011) . - p. 47-58 Titre : Analysis and conservation of an 18th/19th century vegetable-tanned parchment manuscript Type de document : texte imprimé Auteurs : Gomaa Abdel-Maksoud, Auteur Année de publication : 2011 Article en page(s) : p. 47-58 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Conservation Objets d'art -- Conservation et restauration Tannage végétal Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This paper describes the use of analytical techniques to examine an 18th/19th century vegetable-tanned hebrew parchment manuscript which had been discovered during excavations in Tanta City, Egypt. The manuscript was assessed, moisture content was determined, its pH, amino acid content and shrinkage temperature were measure. The ink was analysized by X-ray diffraction and atomic absorption. The binding medium of the ink and tannin material of the manuscript studied were identified. Biological deterioration was also assessed. The solubility of the ink used on the manuscript was tested. The manuscript was surface cleaned, consolidated, humidified, flattened and lined, disinfection was also applied. The results of the analyses quantified the deterioration and helped in developing a conservation strategy. The conservation treatment improved the appearance and increased the strength of the manuscript. Note de contenu : INTRODUCTION : Historical background - Visual assessment of the manuscript - Vegetable-tanned parchment - Aim of the study. MATERIAL AND METHODS : Determination of moisture content - Determination of pH - Preparation of the samples for the amino acid analysis - Measurement of the shrinkage temperature - Analysis of ink by X-ray diffraction - Analysis of ink by atomic absorption - Identification of binder in the ink FTIR - Identification of tannin materials by high performance liquid chromatography (HPLC) - Isolation and identification of micro-organisms. RESULTS AND DISCUSSION : Determination of moisture content - Determination of pH - Amino acid analysis - Measurement of the shrinkage temperature - Analysis of ink by X-ray diffraction - Analysis of ink by atomic absorption - Identification of binder in the ink by FTIR - Identification of isolated micro-organisms. CONSERVATION TECHNIQUES : Solubility test for iron-gall ink found on vegetable-tanned parchment manuscript - Consolidation of the flaving ink - Dry and wet cleaning for removal of dust and salt deposits - Consolidation of vegetable-tanned parchment manuscript - Humidification and flattening - Lining process - Disinfection process. En ligne : https://drive.google.com/file/d/1zpmETlXYsc_AZdIF7aNlhBDRkGPWWBPN/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11592 [article]

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Recycling in goat skin lime unhairing / A. Crispim in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 2 (03-04/2011)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 2 (03-04/2011) . - p. 59-62 Titre : Recycling in goat skin lime unhairing Type de document : texte imprimé Auteurs : A. Crispim, Auteur ; A. Sampaio, Auteur ; N. S. Caetano, Auteur Année de publication : 2011 Article en page(s) : p. 59-62 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bain de trempe Centrifugation Chaulage Cuirs et peaux de chèvres Eau -- Consommation -- Réduction Eaux usées Filtration Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The environment is a factor of concern in our lives that forces society to search for an implement technologies that enable cleaner processes in industry. The leather industry is known to be a polluting activity that needs large amounts of water and at the same lime, produces a large flow of alkaline effluents rich in sulphide. The work in this study aims to minimize water and chemical consumption by recycing the liming bath used in goat skin unhairing. Two systems were tested for recycing of the liming bath from a hair-burning process (centrifugation and ultrafiltration) but for recycling the liming bath from a hair-saving process the only system tested was ultrafiltration. These recycling systems provided a good reduction in COD with better results when ultrafiltration was applied. The chemical reduction were 33 % of sodium sulphide. 40 % of anti-wrinkle and sodium sulphydrate and 25 % lime for the hair-burning liming process with recycling. The chemical reductions were 32 % and 25 % lime with an additional consumption of enzyme sodium sulpide, 25 % sodium sulphydrate and 25 % lime, with an aditional consumption of enzyme for the hair-saving liming process with recycling. A reduction in water used of 80 % and 50 % respectively in the hair-burning and hair-saving process was achieved. A brief economic analysis of the recycling systems used for the hair-burning process permitted us to conclude that both options are economically viable. The payback time in the recycling system using centrifugation is 3 years while for the recycling system with ultrafiltration the payback time is 4 years. En ligne : https://drive.google.com/file/d/1F7XdVDElJRImTIXYEYw7ZGvbMBsIb7U0/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11593 [article]

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Biodegradation of leather tanned with inorganic salts / Anna Bacardit in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 2 (03-04/2011)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 2 (03-04/2011) . - p. 63-67 Titre : Biodegradation of leather tanned with inorganic salts Type de document : texte imprimé Auteurs : Anna Bacardit, Auteur ; Montse Jorba, Auteur ; Joaquim Font, Auteur ; Alexander Shendrik, Auteur ; Lluis Ollé, Auteur Année de publication : 2011 Article en page(s) : p. 63-67 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biodégradation Cuirs et peaux -- Détérioration Sels Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This paper aims to evaluate the physical, chemical and biological processes associated with the deterioration of leather tanned with inorganic salts. The samples of leather were exposed during eight months to outdoor weathering, and then their properties were evaluated. The results indicate that biodegradation starts with dehydration, a partial scission of the protein chain of the collagen, detanning and a loss of oils due to volatilization and/or decomposition. Note de contenu : - EXPERIMENTAL : Material - Methodology - Evaluation - RESULTS AND DISCUSSION : Physical degradation - Chemical degradation - Biological degradation En ligne : https://drive.google.com/file/d/1tBVmAOG4qJgrHF2In68dRuHKrhOGe5hZ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11601 [article]

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Design of dehydration and stabilization process for biopelt / Silvia Sorolla in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 2 (03-04/2011)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 2 (03-04/2011) . - p. 68-73 Titre : Design of dehydration and stabilization process for biopelt Type de document : texte imprimé Auteurs : Silvia Sorolla, Auteur ; Rosa Sabe, Auteur ; J. Adzet, Auteur ; Joan Carles Castell, Auteur ; Anna Bacardit, Auteur ; Lluis Ollé, Auteur Année de publication : 2011 Article en page(s) : p. 68-73 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux Culture in vitro Matrice extracellulaire Peau artificielle Tags : 'Synthèse  peau  artificielle'  Stabilisation  Déshydratation  'Solvant  aqueux'  'Solutions  de  tannins'  'Solution  aqueuse' Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The aim of the present work is to generate at laboratory scale a biomaterial developed by in-vitro technology with similar characteristics to genuine leather. The generation of an in-vitro tissue from bovine fibroblasts is carried out using a scatfold to generate a three-dimensional extra-cellular matrix (3D ECM). The development of a biopelt is by an in-vitro production at lab scale in a bioreactor with specific culturing conditions. New methodologies to stabilize the biomaterial generated were investigated. In particular, the biomaterial was stabilized by immersion in solutions of vegetable tannins and cross-linking agents in an aqueous-solvent medium. Note de contenu : - EXPERIMENTAL PROCEDURE : Stabilization trials on dehydrated bovine leather - Increasing the hydrothermal stability of tanned leather samples - Stabilization trials with biopelt samples. - RESULTS AND DISCUSSION : Stabilization trials on dehydrated bovine leather - Increasins the hydrothermal stability of tanned leather samples - Stabilization trials with biopelt samples. En ligne : https://drive.google.com/file/d/1P_XI6tXbGnIaA7_HiMrwnuMCv27-Z9_i/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11602 [article]

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Cricket, leather and balls in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 2 (03-04/2011)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 95, N° 2 (03-04/2011) Titre : Cricket, leather and balls Type de document : texte imprimé Année de publication : 2011 Langues : Anglais (eng) Catégories : Articles de sport Cricket (sport) Cuir Procédés de fabrication Index. décimale : 685 Articles de cuir et de fourrure, produits dérivés Résumé : If you are still with me, I will explain that what follows is a small attempt to tell a story of the possible history of the game as an introduction to the leathers used in the construction of the ball, and a little of today's ball manufacturers. (Thus, the author explains the construction of the ball and the leathers used by relating them to the properties required as a result of the development of the game). Note de contenu : - History of the game of cricket : Stonyhurst cricket - Date of note during the evolution of the game - The cricket ball - When were cricket balls first dyed red ? - Leathers used for the outer covers - The history of cricket ball manufacturers - Making an english cricket ball - Australian cricket balls - Cricket bats - The game of cricket En ligne : https://drive.google.com/file/d/14SUTtqW4XmvgV2sHMv4pmGmQelT47Xqn/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11603 [article]

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