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675 : Technologie du cuir et de la fourrure |
Ouvrages de la bibliothèque en indexation 675
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Purification of collagenous tissue of the epidermal area during beamhouse processing / Jean J. Tancous in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCIV, N° 1 (01/1999)
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Titre : Purification of collagenous tissue of the epidermal area during beamhouse processing Type de document : texte imprimé Auteurs : Jean J. Tancous, Auteur ; Robert J. Harvey, Auteur ; Bruce W. Buehrig, Auteur Année de publication : 1999 Article en page(s) : p. 20-32 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Purification of collagenous tissue of the epidermal area during beamhouse processing has been studied by using a fractionation technique. The epidermal area to the base of the hair pockets was isolated and separated into a residue fraction, a coagulable protein fraction , and a gelatin fraction. The gelatin fraction represented collagenous tissue. Collagenous tissue of the epidermal area of bated stock supplied by thirteen different tanneries varied from 78.6 to 91.3%. Collagenous tissue of the epidermal area of unbated, delimed stock, processed at a tannery, was 83.7%, it was purified by bating, in the laboratory, to 88.4% with a 1-hour bate and to 91.3% with a 3-hour bate. Collagenous tissue of the epidermal area of unbated, delimed stock, processed at another tannery, was 87.9%, it was purified by bating at this tannery to 90.5%. A wash after bate did not improve purification but pickling (or acidification) gave futher purification over bating. Note de contenu : - TANNERY SAMPLES
- U.S.H.S.L.A LABORATORY PROCEDURES: Preparation of two, two-inch squares samples - Preparation of epidermal-area samples - Fractionation of samples - Residue fraction - Gelatin fraction - Coagulable protein fraction - Method of processing laboratory control samples - Laboratory bating studies
- RESULTS AND DISCUSSION: Comparison of two-inch squares samples with epidermal area samples - Comparison of laboratory processing and tannery processing - Laboratory bating of tannery-processed, steerhide samples - Vegetable-tanned leather processing - Chrome-tanned leather processing - Improvement of purification of epidermal area by bating over deliming - Effect of washing after bating on purification - Effect of pickling after bating on purification - Effect of lowering pH after bating on purification - Appearance of residue - Coagulable protein fractionEn ligne : https://drive.google.com/file/d/1YCs6WUep2BxEhb4KzAau9IEq2U0o6vK0/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4492
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCIV, N° 1 (01/1999) . - p. 20-32[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006971 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Putting the shine on Type de document : texte imprimé Année de publication : 2009 Article en page(s) : p. 24-27 Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : BLC Leather Technology Centre present an overview of patent and metallic fashion finishing effects that can be seen on more and more leathers these days. Every few years patent and other highly fashionable finishes applied by foils surch as metallic becom heavily demanded but often present a range of technical difficulties to the tanner or finisher. En ligne : https://drive.google.com/file/d/1pwxUKBCr48cEOYlWcoxh7l_I7mX3Bm4L/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6483
in LEATHER INTERNATIONAL > Vol. 211, N° 4794 (10/2009) . - p. 24-27[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011726 - Périodique Bibliothèque principale Documentaires Disponible Pyrolysis of chromed leather waste shavings in fluidized bed / Taysnara Simioni in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 10 (10/2014)
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Titre : Pyrolysis of chromed leather waste shavings in fluidized bed Type de document : texte imprimé Auteurs : Taysnara Simioni, Auteur ; Eric Matos, Auteur ; Vinicius Marcondes Bacca, Auteur ; Daniele Perondi, Auteur ; Marcelo Godinho, Auteur ; Aline Dettmer, Auteur Année de publication : 2014 Article en page(s) : p. 342-352 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Chrome
Combustion en lit fluidisé
Cuirs et peaux -- Déchets -- Recyclage
Déchets industriels -- Recyclage
PyrolyseLa pyrolyse est la décomposition ou thermolyse d'un composé organique par la chaleur pour obtenir d'autres produits (gaz et matière) qu'il ne contenait pas. L'opération est réalisée en l'absence d'oxygène ou en atmosphère pauvre en oxygène pour éviter l'oxydation et la combustion (L’opération ne produit donc pas de flamme). Il s'agit du premier stade de transformation thermique après la déshydratation.
Elle permet généralement d'obtenir un solide carboné, une huile et un gaz. Elle débute à un niveau de température relativement bas (à partir de 200 °C) et se poursuit jusqu'à 1 000 °C environ. Selon la température, la proportion des trois composés résultants est différente.Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The leather industry generates a large amount of solid waste, which sometimes has pollution potential. Chromium is often present in this waste. Thermal treatment proves to be a promising method for the reuse of leather waste. The pyrolysis process involves heating the biomass in an inert atmosphere. The products are gas, oil and carbonaceous solid residue (char). The present study main objective is to investigate the production of useful materials from chromed leather waste shavings (CLWS) pyrolysis. This waste was characterized by chromium, total Kjeldahl nitrogen and ashes content. Volatile content, higher calorific value, thermo gravimetric analysis (TGA) and scanning electron microscopy (SEM) were also determined. A fluidized bed reactor was used for the tests. The parameter varied in the experiments was the temperature (723 K and 873 K), and heating rates (0,25 and 0,4 K/s). The product fractions yield was evaluated, and was found that the pyrolysis temperature of 873 K has a higher yield of oil. The oil was characterized using the technique of Fourier transform infrared spectrophotometry (FTIR) and gas chromatography with mass spectrometry, that showed the presence of oxygenated organic compounds (alcohols, phenols, ketones) and even non-oxygenated organic compounds (alkanes, alkenes, aromatics) in its composition. The char was characterized according to the techniques of SEM and energy dispersive spectroscopy (EDS). According to the results of these analyses, the char has a porous morphology and is basically composed of C, Cr, Na, Mg and Cl. Thus, the pyrolysis of CLWS appears as a promising alternative for the treatment of these residues, and to obtain useful products. Note de contenu : - MATERIALS AND METHODS : 1. Leather waste - 2. Sample characterization - 3. Experimental procedure - 4. Determination of the pyrolisis fractions - 5. Products characterization
- RESULTS AND DISCUSSION : 1. Characterization of chromed leather waste shavings - 2. Pyrolisis tests - 3. Pyrolisis products - 4. Products characterizationEn ligne : https://drive.google.com/file/d/1vtdeZ-L4a1vKqeXKfPKxvj0gOKVix6b3/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22083
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIX, N° 10 (10/2014) . - p. 342-352[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16559 - Périodique Bibliothèque principale Documentaires Disponible Pyrolysis of leather trimmings in a fixed bed reactor / Ana F. Almeida in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 4 (04/2017)
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Titre : Pyrolysis of leather trimmings in a fixed bed reactor Type de document : texte imprimé Auteurs : Ana F. Almeida, Auteur ; Isabel M. Pereira, Auteur ; Paulo Silva, Auteur ; M. Paula Neto, Auteur ; Alfredo C. Crispim, Auteur ; Rosa M. Pilao, Auteur ; Albina M. Ribeiro, Auteur Année de publication : 2017 Article en page(s) : p. 112-120 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chromatographie en phase gazeuse
Cuirs et peaux -- Déchets
PyrolyseLa pyrolyse est la décomposition ou thermolyse d'un composé organique par la chaleur pour obtenir d'autres produits (gaz et matière) qu'il ne contenait pas. L'opération est réalisée en l'absence d'oxygène ou en atmosphère pauvre en oxygène pour éviter l'oxydation et la combustion (L’opération ne produit donc pas de flamme). Il s'agit du premier stade de transformation thermique après la déshydratation.
Elle permet généralement d'obtenir un solide carboné, une huile et un gaz. Elle débute à un niveau de température relativement bas (à partir de 200 °C) et se poursuit jusqu'à 1 000 °C environ. Selon la température, la proportion des trois composés résultants est différente.
ThermogravimétrieIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The leather industry, in spite of using by-products of the meat industry, is also a potential pollutant, as it generates solid and liquid wastes. In the traditional manufacturing process, chromium may be present in a large part of such wastes. A lot of research has been made in order to find ways to valorize these wastes, although for crust and finishing leather trimmings more work is needed to show their potential. The aim of the present investigation is to create useful products through the pyrolysis of waste leather trimmings. The experiments were performed in a vertical semi-batch reactor with ID of 9.7 cm. The influence of operating temperature (490 – 800°C) and heating rate on the composition and distribution of the different phases (solid, liquid and gas) was studied. The gas and the liquid fractions were analyzed by gas chromatography and FTIR, respectively. The char obtained was characterized in terms of its higher heating value and proximate analysis. In addition, the thermal degradation of the leather waste was followed using thermogravimetric analysis.
As the temperature increased, the yields of char and gas phase decreased and increased, respectively. The yield of the liquid phase was almost constant for 490 and 610°C, and decreased for higher temperatures. The effect of heating rate on the yields of pyrolysis products was almost negligible. The amount of chromium oxide in the char tended to increase with increasing temperatures. The FTIR analysis of bio-oils indicated the presence of phenols and alcohols, alkanes, aldehydes, ketones, carboxylic acids and aromatic compounds. GC analysis of the gas phase indicated that CO2 was the most abundant gas at 490°C, while hydrogen presented higher concentrations at bed temperatures of 610, 700 and 800°C.Note de contenu : - EXPERIMENTAL : Material - Thermogravimetric analysis - Experimental set-up - Solid, liquid and gas phase characterization
- RESULTS AND DISCUSSION : Thermogravimetric analysis of leather trimmings - Product yields - Characterization of the chars - Liquid phase analysis - Gas compositionEn ligne : https://drive.google.com/file/d/1nQCmIzPsUpQb-Oyd1wGdJHLVA2t3MEPo/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28360
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXII, N° 4 (04/2017) . - p. 112-120[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18835 - Périodique Bibliothèque principale Documentaires Disponible Qualitative and quantitative studies of various leather types using X-Ray fluorescence spectrometry / Dennis C. Shelly in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIII, N° 6 (06/2008)
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Titre : Qualitative and quantitative studies of various leather types using X-Ray fluorescence spectrometry Type de document : texte imprimé Auteurs : Dennis C. Shelly, Auteur ; H. Huang, Auteur Année de publication : 2008 Article en page(s) : p. 176 - 181 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : X-ray fluorescence (XRF) is a rapid, often nondestructive, elemental analysis technique that has been infrequently applied to crust and finished leather characterization. XRF can suffer from moisture and matrix effects, limiting its application in certain materials. The use of effective moisture management and homogenization can minimize these effects. An Oxford Instruments Twin-X benchtop XRF spectrometer, an Oxford MESA-5000 analytical XRF spectrometer and an AMTEC XRA CR 900 instrument were employed for qualitative and quantitative assessment of crust and finished leathers. Chromium calibrations to the "standard" ASTM method showed excellent accuracy and acceptable precision for both the Oxford Twin-X and the AMTEC instrument. Qualitatively, XRF can be performed to rapidly assess type of tannage and heavy metal contamination. Quantitatively, XRF can provide (for suitably-prepared samples) analytical figures of merit (accuracy and precision) that are competitive with conventional analysis techniques. En ligne : https://drive.google.com/file/d/1Efx2bzpXeH7tvjndwdaNOO-1awT8UzUp/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2560
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIII, N° 6 (06/2008) . - p. 176 - 181[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010401 - Périodique Bibliothèque principale Documentaires Disponible Qualité du cuir obtenu à partir de peaux brutes n'ayant pas subi de traitement de conservation / Wiktor Pietrzykowski in REVUE TECHNIQUE DES INDUSTRIES DU CUIR, Vol. LXIV (Année 1972)
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PermalinkPermalinkQuality and clean technology through advanced manufacturing : Part 1 - Dye uptake monitoring / N. J. Cory in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXIX, N° 9 (09/1994)
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PermalinkQuality and sustainability drive German leather industry / Isabella Griffiths in INTERNATIONAL LEATHER MAKER (ILM), N° 45 (01-02/2021)
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PermalinkQuality control as a production management tool in the footwear and leatherware industry / M. Bugarski in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 79, N° 2 (03-04/1995)
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PermalinkQuality enhancement of low grade wet blue leathers : up-grading of thin substance in the wet end process / K. Gowthaman in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 9 (09/2012)
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PermalinkQuantification of hide defects on today's leather / Robert G. Koeppen in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXVI, N° 1 (01/1991)
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PermalinkQuantifying uncertainty for the determination of formaldehyde in leather by colorimetric method / Rajkumar Dewani in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 11 (11/2012)
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PermalinkQuantitative analysis of FITC-trypsin distribution in goatskin matrix / Xuesong Li in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 4 (04/2019)
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PermalinkQuantitative and structural analysis of isotopically labelled natural crosslinks in type I skin collagen using LC-HRMS and SANS / Yi Zhang in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 1 (Année 2019)
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PermalinkQuantitative determination of enzymatic and chemical dehairing of skins by an electronic force sensor / Arife Candas Adigüzel Zengin in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 12 (12/2011)
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PermalinkQuantitative estimation of hair follicle patterns for leather surface using K-function (L-fonction) Method (i): influence of individual and location differences for goatskins on estimation of L-function / Satoru Dohshi in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 97, N° 4 (07-08/2013)
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PermalinkQuantitative estimation of hair follicte patterns for leather surface using K-function (L-function) method (2) : Influence of individual and location differences for sheepskins on estimation of L-function / Satoru Dohshi in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 97, N° 5 (09-10/2013)
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PermalinkQuarternary ammonium compound as bactericide in hide brine curing and presoaking processes / C. Veyselova in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 10 (10/2012)
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