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Détail de l'indexation
675.2 : Préparation du cuir naturel. Tannage |
Ouvrages de la bibliothèque en indexation 675.2
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A study of the grain layer using a scanning electron microscope (SEM) fitted with an energy dispersive X-ray analyser : Part 1 / J. Cot in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 73 (Année 1989)
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Titre : A study of the grain layer using a scanning electron microscope (SEM) fitted with an energy dispersive X-ray analyser : Part 1 : The contribution to quality improvement in defective chrome tanned leathers Type de document : texte imprimé Auteurs : J. Cot, Auteur ; C. Aramon, Auteur ; M. Marsal, Auteur Année de publication : 1989 Article en page(s) : p. 42-46 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Woolled sheepskins showing partial hair-slip were extensively studied. This defect is detected in the "crust" state. Shearlings are first fully dechromed, subsequently de-woolled and chrome tanned. The influence of either a partial or complete beamhouse operation on the finished layer is examined.
On the grain layer, these leathers show modifications of the collagen, which show up in the form of irreversibly dried areas, different degrees of overheating (bare areas), residual epidermal layer and cementing materials (e.g. mucoids and mucopolysaccharides), as a consequence of not having had a proper liming and bating treatment.
By means of the scanning electron microscope (SEM) coupled to an X-ray dispersive energy analyser (EDAX) it is possible to explore, first, the morphology of the grain layer and, secondly, the surface distribution of the inorganic elements, such as : sodium, potassium, calcium, chlorine, sulphur and chromium, especially the two latter elements. A quantitative analysis can carried out, in order to compare faulty and undamaged areas, by means of this advanced technique which makes it possible. :
a) to determine how the chrome is distributed on the surface,
b) to make a detailed "mapping" of the areas studied and to visualise them through photography, where both maximum and minimum accumulation of surface chrome can be observed,
c) to detect and diagnose similar defects in much smaller areas, to be found in leathers intended for processing into "nappa" (processing without either wool or hair) and in "wet-blue" imported leathers.
Once the nature of the defect becomes known and, provided that no irreversible alterations in the collagen protein have taken place, it will be possible to optimise processing in order either to eliminate or to reduce such a defect to negligible levels. In this manner, the quality of the end-product will be improved substantially.En ligne : https://drive.google.com/file/d/16TPegrXtY8TcLXo_Vc9WVIuJKc_JU301/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8826
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 73 (Année 1989) . - p. 42-46[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007136 - Périodique Bibliothèque principale Documentaires Disponible Study of the qualitative and semi-quantitative analysis of grape seed extract by HPLC / Silvia Sorolla in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 3 (03/2018)
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Titre : Study of the qualitative and semi-quantitative analysis of grape seed extract by HPLC Type de document : texte imprimé Auteurs : Silvia Sorolla, Auteur ; Antonia Flores, Auteur ; Trini Canals, Auteur ; Rosa Cantero, Auteur ; Joaquim Font, Auteur ; Lluis Ollé, Auteur ; Anna Bacardit, Auteur Année de publication : 2018 Article en page(s) : p. 88-93 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse quantitative (chimie)
Chromatographie en phase liquide à hautes performances
Pépins de raisins
Raisin et constituants
Tanins -- analyse
Tanins végétauxIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The main aim of this study is to carry out a qualitative and semi-quantitative analysis of tannin extracts as an alternative to the official analysis method ISO 14088 – IUC 32, so that a correlation between the two methods is established.
From the point of view of the chemical composition, tannins are classified into two major groups :
i) condensed tannins, also called flavanols or catechins, and ii) hydrolysable tannins, also called pyrogallic tannins.
Today, the most widely used conventional extracts are quebracho, mimosa, chestnut, and tara. Quebracho and mimosa are condensed tannins, whereas chestnut and tara are hydrolysable tannins.
The following extracts were used in this study: tara powder, commercial mimosa and quebracho extracts and extracts derived from grape seed, containing both condensed and hydrolysable extracts.
The development of this new method will allow a faster and less expensive estimate of the amount of tannins present in a tannin extract.Note de contenu : - MATERIALS AND METHODS : Introduction - Obtaining grape seed extract - HPLC method for determination of tannins
- RESULTS AND DISCUSSION : Analysis of patterns - Analysis of tannin extracts
- FIGURES : 1. Typical UV-Vis spectrum of catechin compounds - 2. Typical UV-Vis spectrum of gallotannins - 3. Correlation between standard filter method ISO 14088-IUC 32 and total of peak areas by HPLC - 4. Grapetan chromatogram, PP2 sampleEn ligne : https://drive.google.com/file/d/1MyW25Rv0f6NbpHMtTDEDf9s4PAp5Wx1c/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30275
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIII, N° 3 (03/2018) . - p. 88-93[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19735 - Périodique Bibliothèque principale Documentaires Disponible A study of various types of soaks on the rehydratation of brine cured hides used for vegetable tanned leather / Jean J. Tancous in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXIX, N° 8 (08/1994)
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Titre : A study of various types of soaks on the rehydratation of brine cured hides used for vegetable tanned leather Type de document : texte imprimé Auteurs : Jean J. Tancous, Auteur ; Waldo E. Kallenberger, Auteur ; Bruce W. Buehrig, Auteur ; L. Shepley Hermann, Auteur Année de publication : 1994 Article en page(s) : p. 241-259 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Six different soaking methods (three enzyme and three older, conventional methods) were compared for their effectiveness in rehydrating the center portion of brine cured hides used for vegetable tanned leather. An enzyme method, which employed the use of a protease plus surfactant was the best of the six methods tried. Added advantages of the protease plus surfactant method were found, such as a significant reduction in the number of center hard spots in the leather, a cleaning of the grain and underlying hair pocket region that has eliminated the bating procedure, a 45 percent reduction in soaking time over conventional methods, and a 40 percent reduction in the amount of sulfides used for unhairing. En ligne : https://drive.google.com/file/d/1Iebj7wthRAx23zBWa4-_EGgIRAoQB5k3/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8059
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXIX, N° 8 (08/1994) . - p. 241-259[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006921 - Périodique Bibliothèque principale Documentaires Disponible A study on characteristics of low-density regenerated leather using chromium-tanned shaving waste / Eun-Chul Shin in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 2 (03-04/2023)
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Titre : A study on characteristics of low-density regenerated leather using chromium-tanned shaving waste Type de document : texte imprimé Auteurs : Eun-Chul Shin, Auteur ; Young-Woo Kim, Auteur ; Won-Ki Lee, Auteur Année de publication : 2023 Article en page(s) : p. 43-48 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir reconstitué
Cuirs et peaux -- Déchets -- Recyclage
Dérayage
Matériaux expansés
Microsphères
Moussage (chimie)Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Shaving scrap is collagen fibre, that is the leather waste occurring during thickness adjustment during the natural leather manufacturing process, and may cause problems such as environmental contamination because of the chromium (Cr) contained when it comes to reclaiming processes. Various studies applying to shaving scrap are currently being conducted in many countries across the world with an initiative by the EU. Amongst those applications, the regenerated leather is being highlighted as a substitute for natural leather. However, since the regenerated leather uses latex as a binder, it accordingly entails a high weight, which is deemed as a disadvantage due to its dense internal tissues compared to other synthetic leathers. To address such disadvantages, this study employed the thermally expandable microspheres (TEMs) to improve its density and light weight by alleviating the internal structure. This is a study on the manufacturing of foamed regenerated leather using shaving scraps. In the study, the shaving scraps were forced to foam at under 100~120°C with consideration for the heat resistance of collagen fibre after applying the thermally expandable microsphere, and then the effect was analysed. In the analysis results, the most effective foaming rate was exhibited when the shaving scraps were treated at under 110°C for 8 minutes using TEMs T110. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Manufacture of regenerated leather - Measurements
- RESULTS AND DISCUSSION : Optimisation of foaming conditions - Foaming studies by microsphere content
- Table 1 : Microsphere used in this study
- Table 2 : SEM images of foaming conditions
- Table 3 : Physical properties according to content of microsphere
- Table 4 : WVP* and density according to content of microsphereEn ligne : https://drive.google.com/file/d/11Uz81wHKO5x9AAvLwpedwpNOepWJST2F/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39063
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 107, N° 2 (03-04/2023) . - p. 43-48[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24024 - Périodique Bibliothèque principale Documentaires Disponible Study on the microstructure of crocodylus niloticus skins during leather making process / Qiang Tao-Tao in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 3 (03/2019)
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Titre : Study on the microstructure of crocodylus niloticus skins during leather making process Type de document : texte imprimé Auteurs : Qiang Tao-Tao, Auteur ; Han Mi-Mi, Auteur Année de publication : 2019 Article en page(s) : p. 89-93 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Crocodile du Nil
Cuirs et peaux -- Analyse
Microstructures -- Analyse
Peau -- Histologie
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The variation on the microstructure of Crocodylus niloticus skins in the tanning process was observed and analyzed by using frozen section staining, which provide the reliable theoretical basis for Crocodylus niloticus leather production. The research on aldehyde fuchshin staining method showed that elastic fiber will receive a lot of damage in the bating and bleaching process. Through the observation of wet blue leather by scanning electron microscopy, the preparation work section and tanning process design are reasonable, also, inter-fibrillary substances had been well removed. The crosscut microstructure of Crocodylus niloticus hides before and after fatliquoring was observed by nile blue sulphate staining method, and the results showed that fatliquor could penetrate into the skin uniformly. Note de contenu : - EXPERIMENTAL : Materials - Instruments - Leather making process - Sampling - Observation on microstructure of preparation and tanning section - Optical light microscope observation - Scanning electron microscope observation
- RESULTS AND DISCUSSION : The variation of histology at preparation stage - the variation of elastic fibers at preparation stage - The histology of blue wet skins of crocodylus niloticus - The variation of histology before and after fatliquoringEn ligne : https://drive.google.com/file/d/1FihZhQIpgWbw6oZQ511GYr85HhhhegdC/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31929
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIV, N° 3 (03/2019) . - p. 89-93[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20673 - Périodique Bibliothèque principale Documentaires Disponible Study on the pyrolysis kinetic behaviors of different vegetable-tanned sheepskin leathers / Chaoya Ren in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 8 (08/2023)
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PermalinkPermalinkSur l'action tannante de l'acide nitreux et les propriétés du collagène désaminé / E. Schweikert / Lyon : Imprimeries réunies (1935)
PermalinkSur le comportement de divers tanins végétaux dans le tannage rapide / H. Herfeld / London [United Kingdom] : Wattle Export Development (1962)
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PermalinkA survey of modern vegetable tannage / Tanning Extract Producers Federation / Zurich [Suisse] : Tanning Extract Producers Federation (1974)
PermalinkPermalinkSustainable metal-free leather manufacture via synergistic effects of triazine derivative and vegetable tannins / Yuanhang Xiao in COLLAGEN AND LEATHER, Vol. 5 (2023)
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PermalinkPermalinkPermalinkSynthesis and application of eco-friendly amino resins for retanning of leather under different conditions / Rashid Saleem in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 1 (01-02/2015)
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PermalinkSynthesis and application of fluorinated acrylate copolymer as a retanning agent / Jin Liqiang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 4 (07-08/2006)
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PermalinkSynthesis and application of graft copolymer retannage of degraded starch and vinyl monomers in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 2 (03-04/2005)
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PermalinkSynthesis and application of highly branched polymers as filling-retanning agents / Chai Yuye in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 94, N° 5 (09-10/2010)
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PermalinkSynthesis and application of urea paraformaldehyde polymer as a tanning agent / N. H. El-Sayed in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 6 (11-12/2002)
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PermalinkSynthesis and investigation of the composition of model tanning/fatliquoring preparations / Anita Przepiórkowska in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 78, N° 4 (07-08/1994)
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PermalinkSynthesis and mechanical properties of polyacrylic acid resin retanning agent / Zou Xianglong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 98, N° 3 (05-06/2014)
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PermalinkSynthesis and properties of hydroxyl-terminated hyperbranched poly isocyanurate-ester retanning agents / Ren Long-Fang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 7 (07/2017)
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PermalinkSynthesis and retanning performance of a novel melamine resin with ultralow formaldehyde content / Zhou Ji-Bo in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 1 (01/2023)
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PermalinkSynthesis and spectroscopic characterisation of the polygalloyl esters of polyols-models for gallotannins / H. R. Tang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 5 (09-10/2003)
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PermalinkSynthesis, characterisation and application of novel valonia tannin based waterborne polyurethane with natural colour / Yang Liu in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 3 (05-06/2019)
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