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675 : Technologie du cuir et de la fourrure |
Ouvrages de la bibliothèque en indexation 675
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New generation fungicide for the leather industry / Dennis L. Dalton in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 1 (01/2012)
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Titre : New generation fungicide for the leather industry Type de document : texte imprimé Auteurs : Dennis L. Dalton, Auteur Année de publication : 2012 Article en page(s) : p. 21-30 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antifongiques
Cuirs et peaux -- Conservation
Cuirs et peaux -- Industrie -- Aspect de l'environnementTags : Cuir Fungicide 'Azole 388' '2-(thiocyanomethylthio)benzothiazole' 'TCMTB 30' Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Fungicides are used in leather production to protect semi processed and finished leather against mold growth during storage and shipping. These chemicals are essential in leather manufacture to ensure that the leather is not degraded by mold growth and to safeguard the leather’s quality, usefulness and commercial value. Over the years the use of some fungicides has been disallowed due to their toxicity or other issues, while others may be restricted in the future. Consequently, tanners are faced with a more limited number of products to choose from when it comes to these chemicals. In an effort to address this need, Zenith undertook a development project that led to a product specifically designed for the leather industry, which has good fungicidal effectiveness, an acceptable toxicology/eco profile and competitive cost. This paper provides an overview of the performance characteristics of this new leather fungicide. En ligne : https://drive.google.com/file/d/1AtLYuDuuC63uyJMai0WG-fzdZd2dOnqO/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13299
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Code-barres Cote Support Localisation Section Disponibilité 13555 - Périodique Bibliothèque principale Documentaires Disponible New generation fungicide - update / Dennis L. Dalton in LEATHER INTERNATIONAL, Vol. 212, N° 4804 (10/2010)
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Titre : New generation fungicide - update Type de document : texte imprimé Auteurs : Dennis L. Dalton, Auteur Année de publication : 2010 Article en page(s) : p. 44-50 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antifongiques
Cuirs et peauxIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : In 2008 Zenith published a paper called "new generation fungicide for the leather industry". This article provides an update on developments that have taken place over the past two years.
Since the introduction of the new azole-based leather fungicide Zenith 399, the product has been widely accepted by the leather industry and is fast becoming the new standard against which other fungicides are measured. The product has proven enormously successful due to its superior efficacy, due to its more people/eco friendly nature and because of its cost-effectiveness. Thousands of fungal resistance test have been conducted on leathers from around the world. This paper provides an update on this novel non-TCMTB fungicide.En ligne : https://drive.google.com/file/d/10-OKypldqD-VOXeEtOKRVhRcfOjnzot7/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10105
in LEATHER INTERNATIONAL > Vol. 212, N° 4804 (10/2010) . - p. 44-50[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012538 - Périodique Bibliothèque principale Documentaires Disponible A new generation of elastomers containing innovative biopolymers / Miroslawa Prochon in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 1 (01-02/2016)
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Titre : A new generation of elastomers containing innovative biopolymers Type de document : texte imprimé Auteurs : Miroslawa Prochon, Auteur ; Anita Przepiórkowska, Auteur ; Yves-Hervé Ntumba, Auteur ; Tshela Ntumba, Auteur Année de publication : 2016 Article en page(s) : p. 8-18 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biomatériaux
Biopolymères
Charges (matériaux)
Copolymère carboxylique de butadiène et de nitrile acrylique
Cuirs et peaux -- Déchets -- Recyclage
Déchets organiques -- Recyclage
Elastomères
Elastomères -- Propriétés mécaniques
Hydrolyse enzymatique
kératineLa kératine est une protéine, synthétisée et utilisée par de nombreux êtres vivants comme élément de structure, et également l'exemple-type de protéine fibreuse.
La kératine est insoluble, et peut être retrouvée sur l'épiderme de certains animaux, notamment les mammifères, ce qui leur garantit une peau imperméable. Parfois, lors d'une friction trop importante, la kératine se développe à la surface de la peau formant une callosité. Les cellules qui produisent la kératine meurent et sont remplacées continuellement. Les morceaux de kératine qui restent emprisonnés dans les cheveux sont couramment appelés des pellicules.
La molécule de kératine est hélicoïdale et fibreuse, elle s'enroule autour d'autres molécules de kératine pour former des filaments intermédiaires. Ces protéines contiennent un haut taux d'acides aminés à base de soufre, principalement la cystéine, qui forment un pont disulfure entre les molécules, conférant sa rigidité à l'ensemble. La chevelure humaine est constituée à 14 % de cystéine.
Il y a deux principales formes de kératines : l'alpha-kératine, ou α-keratin, présente chez les mammifères notamment, dont l'humain, et la bêta-kératine, ou β-keratin, que l'on retrouve chez les reptiles et les oiseaux. Ces deux types de kératines ne présentent clairement pas d'homologie de séquence.
Chez l'être humain, la kératine est fabriquée par les kératinocytes, cellules se trouvant dans la couche profonde de l'épiderme. Les kératinocytes absorbent la mélanine (pigment fabriqué par les mélanocytes), se colorent et ainsi cette pigmentation de l'épiderme permet de protéger les kératinocytes des rayons ultraviolets du Soleil.
Microscopie électronique à balayage
Rhéologie
Tannage -- DéchetsIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : This paper presents the results of studies using waste hair from tannery processing on the preparation of protein varieties and their use as fillers for a hydrophobic elastomer such as XNBR (Carboxylated Butadiene —Acrylonitrile Rubber). The protein investigated waste keratin comes from the tannery industry. In the first step of research the cattle hair was shredded and subjected la acidic, basic and enzymatic hydrolysis. In the next step the keratin hydrolysates were stirred with the plasticizer stearin in an addition reaction. Finally, we recovered a multifunctional preparation in powdered form to suit application as a tiller of elastomers. The incorporation of keratin hydrolysate adducts, based on previously modified waste keratin, into this rubber made it possible to obtain elastomeric materials with good rheological and mechanical properties and hardness, resistant to thermo-oxidative ageing. The presence of modified protein of a hydrophilic character not only facilitates cross-linking processes but also increases the susceptibility of the material to bio-decomposition in the natural environment. Note de contenu : - INTRODUCTION : Preparation and use of collagen and keratin hydrolysates
- EXPERIMENTAL SECTION : Materials - Characteristics and methods
- RESULTS AND DISCUSSION : Characterization of keratin adduct - The effect of adducts of keratin on rheometric, mechanical and other properties of rubber compounds - Bio-decomposable compounds - SEM analysisEn ligne : https://drive.google.com/file/d/1OQAskvliObZw9RSTig8NzGjVIHHjBroE/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25556
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 100, N° 1 (01-02/2016) . - p. 8-18[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17847 - Périodique Bibliothèque principale Documentaires Disponible A new insight into the shrinkage phenomenon of hides and skins / N. N. Fathima in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVI, N° 11 (11/2001)
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Titre : A new insight into the shrinkage phenomenon of hides and skins Type de document : texte imprimé Auteurs : N. N. Fathima, Auteur ; Aruna Dhathathreyan, Auteur ; T. Ramasami, Auteur Année de publication : 2001 Article en page(s) : p. 417-425 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Although the art of leather making has been known to exist for ages, the physical and physico-chemical events accompanying the shrinkage phenomenon in leather and its parent substance collagen are largely unknown. In this study, to elucidate the shrinkage phenomenon in hide and leather, a model has been proposed for the total volume of the skin matrix consisting of three components: solid, liquid and air, which are expected to exhibit interfaces among them. On heating, it has been observed that the fibre structure does not collapse monotonically with the loss of moisture beyond a critical amount. Using dilatometry technique, it has been shown that amount of volume expansion on heating is 0.07 ml for 1g of hide. The phase transition leading to shrinkage in the hydrothermal shrinkage phenomenon is shown to be associated with drastic changes in volume composition and absorption of heat. About 30% change in volume has been observed due to the hydrothermal shrinkage. The effect of heat on the pore morphology of the matrix has been studied through scanning electron microscopy, which reveals changes in the macro porous structure of the matrix depending upon the moisture content. En ligne : https://drive.google.com/file/d/1Y991MOKamI1HIUo00cJggOcDBXnicrra/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4348
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Code-barres Cote Support Localisation Section Disponibilité 001568 - Périodique Bibliothèque principale Documentaires Disponible A new leather-making process for meeting eco-label standards : Processing of goatkins / Subramani Saravanabhavan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CI, N° 5 (05/2006)
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Titre : A new leather-making process for meeting eco-label standards : Processing of goatkins Type de document : texte imprimé Auteurs : Subramani Saravanabhavan, Auteur ; B. Chandrasekaran, Auteur ; Palanisamy Thanikaivelan, Auteur ; Balachandran Unni Nair, Auteur ; Jonnalagadda Raghava Rao, Auteur Année de publication : 2006 Article en page(s) : p. 192-205 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Eco-labels are used to guarantee the consumer a product meets certain minimum standards relating to its environmental impact during production, use or disposal, and to distinguish the product from competitors in a positive way. The leather industry, especially in developing countries, has provided economic benefits but suffers from a negative image due to the environmental impact pf tannery wastewaters, solid wastes and gas emissions. The conventional method of tanning involves a 'do-undo' process and subjects the skin or hide to wide variations in pH (2.8 - 13.0). This results in the emission of significant pollution loads, such as biochemical oxygen demand (BOD), chemical oxygen demand (COD), total dissolved solids (TDS), total solids (TS), sulfates, chlorides and chromium. In the approach demonstrated here, hair and flesh removal, as well as fiber opening, have been achieved using biocatalysts at pH 8.0; tanning using optimized pickle and basification-free chrome tanning followed by post-tanning using environmental benign chemicals. It has been found that the extent of hair removal and opening up of fiber bundles are comparable to that of control leathers. This has been substantiated through scanning electron microscopic (SEM) analysis and softness measurements. Performance of the leathers is shown to be on par with control chrome-tanned leathers through physical and hand evaluation. The shrinkage temperature of the leathers obtained from this optimized pickle and basification-free chrome tanning system is above 120°C. The process also exhibits significant reduction in BOD, COD, TDS and TS loads by 90, 92, 89 and 90%, respectively. Processed leathers satisfy the key parameters of both the Indian eco-mark standard and the German eco-label standards (Oko-Tex, SG (Schadstoff Gepruffl), LGR (Lederinstitut Gerberschule Reutlingen)). Finally, the developed process seems to be economically viable. En ligne : https://drive.google.com/file/d/1l8FviqEK27Dlu4ePtejFM4mzqk0JIDKl/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4013
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Code-barres Cote Support Localisation Section Disponibilité 004807 - Périodique Bibliothèque principale Documentaires Disponible New liquid-ice raw hide preservation in Ireland / Steve Hodges in WORLD LEATHER, Vol. 15, N° 5 (08-09/2002)
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PermalinkA new look at curing / Desmond R. Cooper in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 57 (Année 1973)
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PermalinkA new marking system for leather based on encapsulated DNA / Sandra Stenzel in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 9 (09/2015)
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PermalinkNew measuring apparatus and test methods to meet the needs of automobile leathers / Josef Schmitt in WORLD LEATHER, Vol. 14, N° 6 (10/2001)
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PermalinkA new non-destructive leather softness test / K. T. W. Alexander in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 77, N° 5 (09-10/1993)
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PermalinkPermalinkNew plasticiser from fur leather waste / M. Velcheva in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 76, N° 2 (03-04/1992)
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PermalinkNew possibilities for mechanical softening of leather / V. Tricys in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 3 (05-06/2006)
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PermalinkA new process of leather dyeing in solvent medium / H. Rafidinarivo in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 80, N° 1 (01-02/1996)
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PermalinkNew trends in leather dyestueffs development and classification / H. Wicki in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60 (Année 1976)
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PermalinkNew trends in leather dyestuffs development and classification / H. Wicki in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60, N° 5 (09-10/1976)
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PermalinkPermalinkA new way to treat chrome leather shavings : collagen degradation product as cement retarder / Bangquan Wei in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 3 (05-06/2021)
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PermalinkNew Zealand lamb pelts for clothing leather / Heinz Meyer in WORLD LEATHER, Vol. 6, N° 6 (10-11/1993)
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PermalinkNewer development in the chemistry and structure of collagenous connective tissues and their impact on leather manufacture / E. Heidemann in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 66 (Année 1982)
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