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Ajouter le résultat dans votre panierKnowledge management and leather technology / G. Grasso in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 93, N° 3 (05-06/2009)
Titre : Knowledge management and leather technology : Quality assurance in research and technical activities Type de document : texte imprimé Auteurs : G. Grasso, Auteur Année de publication : 2009 Article en page(s) : p. 81-90 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : "Knowledge management" is a systematic practice which is quickly expanding in such application fields as production engineering and the planning business, thait aims to define methods and procedures for giving a concrete direction to the organization of the competences, the multidisciplinary nature of information and lifelong learning. This manuscript purposes to give technicians and researchers in "tanning technologies" an organizational instrument to structure their own heterogeneous knowledge by means of a "common thread conductor". This classifies the technical information and conforms their "shape", presentation and manipulation through the elementary, basic elements of system theory. So, a best technological practice managing system (BTPMS) can be suggested, following the familiar form of the usual quality management sytems for process improvements and quality assurance in specific areas of technical services. The study is mainly focussed on aspects such as identify, classify, represent, codify, create, capture, organise/structure data, distribute and finally enable adoption of the technical knowledge of tanning-processes. En ligne : https://drive.google.com/file/d/1yWfJGvC3bjvm3fRFxEu1hFx1tkSQsybC/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5936
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 3 (05-06/2009) . - p. 81-90[article]Réservation
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Titre : binders cross-linked with polyaziridine. Study of cross-linked polymers for aqueous finishing. Part III : influence of a cationic pre-bottom Type de document : texte imprimé Auteurs : Lluis Ollé, Auteur ; E. Borrà s, Auteur ; Mira Cobos, Auteur ; Josep Maria Morera, Auteur ; M. Dolors Borras, Auteur ; Anna Bacardit, Auteur Année de publication : 2009 Article en page(s) : p. 91-96 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The leather industry needs innovative products and processes to satisfy the requirements of a continuously evolving global market. Modern leathers are processed to very stringent technical specifications so that they will meet end use requirements. In most cases, to fulfil current demands for leather with very fastness, the use of cross-linkers is needed.
Due to differences in the manufacturing processes of polyurethanes and acrylic binders, their structural differences, and the type of tanned and retanned leather being used, variations in cross-linking may occur. Quality discrepancies will therefore be observed in the finished leather.
This study explores the influence of a cationic pre-bottom on the cross-linking reaction of polyaziridine, as well as the influence of the type of polymer employed and the type of tannage and retannage effected on the amount of cross-linker needed to improve wet physical properties of the finishing.
A comparison of results shows that the application of a cationic pre-bottom improves fastness to wet rub, this improvement being most significant in polyurethane rather than in acrylic binders. Furthermore, the cationic prebottom provides beter results when working with resin-synthetic-vegetable retanned leather and vegetable leathers. However, different amounts of polyaziridine are needed with regard to the content of carboxylic acid groups of the polymers being used.En ligne : https://drive.google.com/file/d/1_vAFG39wvCNrj5Axv_7qzNT9PhfrjBXm/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5937
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 3 (05-06/2009) . - p. 91-96[article]Réservation
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Titre : Minimisation of volatile organics in a metallic foil patent finish for uppers and leather goods Type de document : texte imprimé Auteurs : Lluis Ollé, Auteur ; Anna Bacardit, Auteur ; Joaquim Font, Auteur ; Rosa M. Cuadros, Auteur ; Mira Cobos, Auteur Année de publication : 2009 Article en page(s) : p. 97-102 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In response to pressures of globalization and easy relocation of leather factories to low-cost countries, to environmental legislation and changes in consumer behaviour, the leather industry needs to produce innovative, fashionable and eco-friendly articles. We studied a coating formulation in this work for a metallic foil patent finish which tackles all these issues. In addition, we replaced solvent products by aqueous products in order to reduce the emissions of volatile organic compounds. The finished leathers were transparent, smooth, with a glossy appearance (almost glass-like) and with a metallic effect. The leathers meet the quality requirements for shoe upper and leather goods, and are commercially acceptable. Moreover, there is a 96,08 % reduction of emissions of volatil organic compounds. En ligne : https://drive.google.com/file/d/1R39TZJu7tZzyXIHX6TDDjB_lWLbNA-ym/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5938
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 3 (05-06/2009) . - p. 97-102[article]Réservation
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Titre : Dye wastewater treatment : photocatalysis and the synergies of photocatalytic oxidation with Fenton reagent Type de document : texte imprimé Auteurs : Ding Shao-Lan, Auteur ; Cheng Chun-Lei, Auteur ; Wang Peng, Auteur ; Wang Rui, Auteur ; Liu Jing, Auteur Année de publication : 2009 Article en page(s) : p. 103-107 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Photocatalysis and the synergies of photocatalytic oxidation with Fenton reagent were used to treat the dye wastewater of Beijing Fanbo Science & Technology C., Ltd. Through the orthogonal experiment the optimal conditions of photocatalysis were obtained. Under such conditions, the removal rate of CODcr was 63 % while the removal rate of "chromaticity" was 70 %. In experiments on the synergies of photocatalytic oxidation with Fenton reagent, the optimal conditions were : H2O + FeSO4.7H2O2 = 12ml/l + 1,7g/L, TiO2 = 12g/L, the reaction pH was 3, qnc ghd photo-aeration time was 90min. Under such conditions, the removal rate of the wastewater CODcr reached 89,4 % while the removal rate of the chromaticity was 98 %, which was more than 50 % improvement on simple photocatalytic oxidation.
Dye wastewater may include dye production wastewater and the print/dyeing industry wastewater. At present aromatic hydrocarbon and heterocyclic compounds are the primary components of the dyestuff and they have colour groups and polar groups. Dye developments mean that their structures are becoming more complex and their properties more stable. This brings greater difficulty to the treatment of print/dyeing wastewater. Dye wastewater has various characteristics such as the complex ingredients, high chromaticity, high CODcr and BOD, suspended matter and a wide range of water quality and quantity with hard to degrade substances.
This wastewater is one of the more difficult to treat industry wastewaters. Take the CODcr of a dye user wastewater for example, it is usually between 500 and 1500mg/L while dye production wastewater is ussually over 10 000mg/L. According to the literature and reports, the decolouration methods for the dye wastewater are mainly biological oxidation process, hydrocarbonylation (chemical oxidation, photocatalysis and microwave synergy), adsorption, coagulation and electrochemical technologies. Fenton reagents hav become on much-discussed point. The Fenton method can be applied to the advanced disposal of the wastewater, the application of Fenton reagent and various improved systems in the wastewater disposal can be divided into two groups : one is solely as a disposal method to oxidize the organic wastewater ; the other is useed synergistically with other methods, such as coagulation sedimentation actived charcoal, biological process and photocatalysis.
Beijing Fanbo Corporation is a fur chemical material company. Its wastewater is the typical acid dye production wastewater and contains leather chemical materials such as surfactants in high concentration and grease. The dyes typically have a M.Wt of 400 to 800 and are monosulphonic. The range of CODcr in the wastewater may the from 1500mg/L to 160 000mg/L and the ingredients complex. As a chemical provider to fur factories, the production wastewater from Fanbo Corporation not only has the same wastewater from Beijing Fanbo Science & Technology Co., ltd., by the synergy of photocatalytic oxidation with Fenton reagent and expected to solve the problems of dye wastewater, such as high CODcr, high chromatiticy, hard degradation and high cost. The particular wastewater is considered to have a moderate COD and average levels of colour.En ligne : https://drive.google.com/file/d/1eKTkhSQeJMTDoRZwwjKKQcXeEOrdMjA4/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5939
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 3 (05-06/2009) . - p. 103-107[article]Réservation
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Titre : Soft leathers from himantura stingray skins Type de document : texte imprimé Auteurs : R. Karthikeyan, Auteur ; Chandra Babu Narasimhan Kannan, Auteur ; Asit Baran Mandal, Auteur ; Praveen Kumar Sehgal, Auteur Année de publication : 2009 Article en page(s) : p. 108-113 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The preparation of soft leathers from chondrichthyes fish such as stingray is unfamiliar to tanners processing conventional animal skins. The dorsal portion of stingray skins with calcified denticles has a very attractive and beatiful appearance. Due to calcification of the skeleton, stingray skin is very hard and tough and retains its hardness even after tanning. The calcium content of raw stingray skin has been determined by atomic absorption spectroscopy. SEM-EDAX investigations have been mde on stingray denticles to reveal the mineral and structural characteristics. To prepare soft leathers from stingray skins a modified chrome tanning process has been adopted for beter fibre opening and separation. Comparison skins were also processed by conventional chrome and vegetable tanning methods. SEM microscopy supported by histological examination of stingray skins and leathers supported the effectiveness of the new process. En ligne : https://drive.google.com/file/d/1d4Hgv12X0HAy1NBHDzBKXBpN8ByAwgU6/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5940
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 3 (05-06/2009) . - p. 108-113[article]Réservation
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Titre : Kinetic spectrophotometric flow injection determination of hyamine cationic surfactants in tannery effluent Type de document : texte imprimé Auteurs : Tu Jie, Auteur ; Zhang Xinshen, Auteur ; Dai Shinjun, Auteur ; Yu Lingyun, Auteur ; Tong Ling, Auteur ; Sun Dongmei, Auteur ; Liu Hongyan, Auteur ; Yu Lan, Auteur Année de publication : 2009 Article en page(s) : p. 114-117 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A flow injection analysis coupled with catalytic spectrophotometry is proposed for simple and rapid determination of trace hyamine cationic surfactants (CSs) in tannery effluent and environmental water. The scheme is based on the markedly catalytic reaction of cationic surfactants, i.e., cetyltrimetylammonium bromide (CTMAB) and cetylpyridinium bromide (CPB) which, on oxidation using KIO4 inhighly acidic hydrochloric acid medium discolour Arsenazo (III). Under the optimum conditions, the linear ranges for CTMAB and CPB are 0.1-20mg 1-1, and all relative coefficients of the two Css in different subsections of the linear ranges exceeds 09986 (n=11). The detection limits (3delta) of both the CSs are 0.08mg 1-1, and the recoveries range from 95.7 % to 103.1 %.
The relative standard deviation (R. S. D.) is 1.21 % for 2mg 1-1 CTMAB standard solution (n = 21). The developed method, which is suitable for automatic and continuous analysis, can monitor 15 samples per hour. It has been applied successfully to tannery effluent and environmental water samples.En ligne : https://drive.google.com/file/d/1bSNhFCYzjdUi2t9M9eL2YXWic3mnL6IC/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5941
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 3 (05-06/2009) . - p. 114-117[article]Réservation
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| Code-barres | Cote | Support | Localisation | Section | Disponibilité |
|---|---|---|---|---|---|
| 011443 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |
