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Investigation of the influence of tanning fatliquoring preparations on collagen by infrared spectroscopy / Anita Przepiórkowska in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 4 (07-08/2002)
[article]
Titre : Investigation of the influence of tanning fatliquoring preparations on collagen by infrared spectroscopy Type de document : texte imprimé Auteurs : Anita Przepiórkowska, Auteur Année de publication : 2002 Article en page(s) : p. 143-147 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants
Composés chimiques bi-fonctionnels
Cuirs et peaux -- Teinture
Cuirs et peaux de veaux
Huiles et graisses
Produits de nourriture du cuir
Tannage
Tannage au chromeIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A topic of our investigative works for several years has been simultaneous compact tanning and fatliquoring using compounds possessing the dual functions of tanning and fatliquoring of skins and hides in one single operation. Material for uppers such as calf, bovine, pig and rabbit skins tanned and fatliquored by means of the aforementioned operations possesses good hydrothermal (Ts) properties and have a soft and full handle. The surface of compact tanned skins has a positive electrical charge but its magnitude is lower than in case of classically chrome tanned material. A higher degree of masking of the chrome (III) complexes by organic ligands in the compact tanned skins permits us to obtain better and deeper penetration of dyestuffs in garment leathers.
It has been shown that the introduction of the combined bifunctional tanning agent (i.e. tanning agents chemically bound with fatliquoring compounds) into the skin tissue produces leather containing 5.4% to 6.1% non-extractable fat. The introduction of such bifunctional compounds into the skin during tanning gives the leather desirable properties such as resistance to aqueous and organic solvent based cleaning agents such as are commonly used to clean leather garments.
Based on the results of the investigations into compact and simultaneous tanning and fatliquoring processes we appear to be dealing with quite a different process mechanism from that applicable to clasical tanning and fatliquoring.
The aim of this study is to investigate by infrared spectroscopy the mutual influence of model preparations and tanning- fatliquoring compounds on the one hand on gelatine (which could be considered as a model of skin tissue) and calf skin on the other.En ligne : https://drive.google.com/file/d/11mIMMOVCX_T6cfGwTltc_r4Q1MesGDWt/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39903
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 86, N° 4 (07-08/2002) . - p. 143-147[article]Leather ageing and hexavalent chromium formation as a function of the fatliquoring agent. Part I : chrome tanned leathers / Ramón Palop in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 5 (09-10/2008)
[article]
Titre : Leather ageing and hexavalent chromium formation as a function of the fatliquoring agent. Part I : chrome tanned leathers Type de document : texte imprimé Auteurs : Ramón Palop, Auteur ; Joan Parareda, Auteur ; Olga Ballùs, Auteur ; Agusti Marsal, Auteur Année de publication : 2008 Article en page(s) : p. 200-204 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir -- Effet du rayonnement ultraviolet
Cuir -- Teneur en chrome hexavalent
Cuirs et peaux -- Détérioration
Cuirs et peaux -- Effets de la température
Essais (technologie)
Jaunissement (défaut)
Produits de nourriture du cuir
Tannage au chromeIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The aim of this work was to evaluate the influence of eighteen different types of fatliquoring agents on leather ageing.
Temperature and ultraviolet light tests were conducted separately. The existence of a direct relationship between leather yellowing, diminution of shrinkage temperature, autoflammability and odour was confirmed.
There was also a non-linear relationship between the above parameters and the iodine index of the fatliquoring agents.
Hexavalent chromium was not formed when temperature tests were applied on neutralised and fatliquored leathers. The possible physicochemical mechanisms for this phenomenon are discussed.
The temperature test exerted greater influence than the ultraviolet light tests on the aforementioned parameters.Note de contenu : - AIM OF THE WORK
- EXPERIMENTAL PROCEDURES : Materials and methods - Evaluation of the treated samples
- RESULTS AND DISCUSSION : Effect of temperature - Relationship between iodine number an the parameter evaluated
- Table 1 : Process details
- Table 2 : Fatliquoring agents used with their iodine index
- Fig. 1 : Influence of temperature on yellowing
- Fig. 2 : Influence of temperature on shrinkage temperature
- Fig. 3 : Yellowing and detanning mechanisms
- Fig. 4 : Plot of shrinkage temperature versus quantity of fixed chromium
- Fig. 5 : Influence of temperature on denaturing temperature
- Fig. 6 : Influence of temperature on odour
- Fig. 7 : Influence of temperature on surface area variation
- Fig. 8 : Influence of ultraviolet light on yellowing
- Fig. 9 : Influence of ultraviolet light on shrinkage temperaturePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35251
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Code-barres Cote Support Localisation Section Disponibilité 21781 - Périodique Bibliothèque principale Documentaires Disponible Leather ageing and hexavalent chromium formation as a function of the fatliquoring agent. Part II : Chrome retanned leathers / Ramón Palop in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 6 (11-12/2008)
[article]
Titre : Leather ageing and hexavalent chromium formation as a function of the fatliquoring agent. Part II : Chrome retanned leathers Type de document : texte imprimé Auteurs : Ramón Palop, Auteur ; Joan Parareda, Auteur ; Olga Ballùs, Auteur ; Agusti Marsal, Auteur Année de publication : 2008 Article en page(s) : p. 237-239 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chrome hexavalent
Cuir -- Effet du rayonnement ultraviolet
Cuirs et peaux -- Détérioration
Cuirs et peaux -- Effets de la température
Cuirs et peaux -- Propriétés organoleptiques
Cuirs et peaux -- Propriétés physiques
Produits de nourriture du cuir
Retannage
Tannage au chromeIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In this second part, we assessed the influence of a chromium retanning process applied to wet-blue hides fatliquored with eighteen different fatliquoring agents on yellowing, detanning and Cr(VI) formation after exposure to the separate effects of temperature and ultraviolet light. The results obtained for chromium retanned leathers are compared with those of non-retanned leathers in Part I.
The temperature test gave rise to less yellowing in chromium-retanned leathers than in non-retanned leathers. As for shrinkage temperature, there were no linear variations although a tendency to lower shrinkage in the retanned samples was observed.
Amounts of hexavalent chromium varied as a function of the fatliquor type. It may be concluded that the oxidised chromium present resulted from residual or weakly fixed chromium from the retanning process. Regarding fastness to ultraviolet light, both yellowing and shrinkage temperature reduction were lower in chromium retanned leathers.
Eight fatliquoring agents were selected in line with the results obtained. Their behaviour with respect to physical and organoleptic properties was compared with that of a sulphated triglyceride used as reference. The most suitable fatliquoring agents were suggested for four different leather articles.Note de contenu : - EXPERIMENTAL PROCEDURE : Materials and methods - Evaluation of the treated samples
- RESULTS AND DISCUSSION : Effect of temperature - Effect of light
- BEHAVIOUR OF SELECTED FATLIQUORING AGENTS V. PHYSICAL AND ORGANOLEPTIC PROPERTIES : Comparison with a standard process - Results
- CONCLUSIONS : Selection of fatliquoring agents for different leather articles
- Table 1 : Process details
- Table 2 : Fatliquoring agents used with their iodine index
- Table 3 : Variation of the properties (%Δ) compared with the reference except fogging, which refers to the absolute values for each fatliquoring agentEn ligne : https://drive.google.com/file/d/1U17gAnTjeWUhI1pnG6jm0c0MEj4I70j9/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38991
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 92, N° 6 (11-12/2008) . - p. 237-239[article]Leather fatliquor from hide fleshings / M. A. Habib in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 98, N° 5 (09-10/2014)
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Titre : Leather fatliquor from hide fleshings Type de document : texte imprimé Auteurs : M. A. Habib, Auteur ; A. G. Alshammari, Auteur Année de publication : 2014 Article en page(s) : p. 199-204 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bisulfite de sodium
Cuirs et peaux -- Déchets -- Recyclage
Cuirs et peaux -- Propriétés mécaniques
Echarnage
Emulsions
Huiles et graisses
Produit animal
Produits de nourriture du cuir
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The huge amount of fleshings from tanneries around the world creates a negative environmental impact, in addition to disposal costs ; these wastes are not well used. This paper presents some innovative processes for reclaiming the fats carried by a large variety of flesh hides or skin wastes, along with the fatty matter separation and modification to obtain a surface active material intended to be used as leather softening agents.
The fat was extracted with hot water at a fixed temperature (85 +/- 5°C, solid : water 1:1 w/v and 2 hours stirring time). The fat rich phase was then separated and purified with n-hexane (fats : n-hexane 1:8 w/v, ambiant temperature and one hour stirring time). The fat was cooled to 12°C and filtered under pressure to isolate the unsaturated oleic fraction and exclude the stearic fraction. The chemical evaluation of oleic fraction indicated that it was suitable for the production of leather softening (fatliquoring) agent. The product was treated with sodium bisulfite (1,5 mol/kg based on weight of fat, 85°C, 2 hours stirring and continuous air flow). A good quality fatliquoring agent was produced. Application of the fatliquor emulsion on wet-blue leather showed enhanced mechanical properties, tensile strength, elongation and improved appearance. Thereby the waste was transformed into a valuable resource.Note de contenu : - METHODS : Separation of fat from fleshings - Separation of unsaturated oleic fraction from saturated stearic fraction - Analysis of unsaturated oleic fraction - Sulfitation process - Analysis of sulfited fat - Evaluations of fatliquor emulsion - Fatliquoring process - Evaluation of fatliquored leather - Scanning electron microscope
RESULTS AND DISCUSSION : Chemical evaluation of unsaturated fatty matter - Evaluations of fatliquor stability - Characteristics of fatliquored leatherEn ligne : https://drive.google.com/file/d/1zLV6QB-SAddcE_Eu93_d_uppib5fTtfI/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22209
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Code-barres Cote Support Localisation Section Disponibilité 16629 - Périodique Bibliothèque principale Documentaires Disponible 16621 - Périodique Bibliothèque principale Documentaires Disponible Lipid nanoparticles and spontaneous precipitation of a fatliquoring agent / Xu-Gang Dang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 4 (07-08/2016)
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Titre : Lipid nanoparticles and spontaneous precipitation of a fatliquoring agent Type de document : texte imprimé Auteurs : Xu-Gang Dang, Auteur ; Hui Chen, Auteur ; Ru-Wei Wu, Auteur ; Zhi-Hua Shan, Auteur Année de publication : 2016 Article en page(s) : p. 190-197 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux de chevreaux
Emulsifiants
Emulsions
Huile de colza
Huiles et graisses
Lipides
Nanoparticules
Photostabilité
Produits de nourriture du cuir
Tanins végétauxIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The high temperature emulsifying lipid complex, hydrogenated and sulfonated fatty acid methyl ester — alkyl alcohol amine (HSF-AM), was prepared. As a fatliquoring agent, HSF-AM can be emulsified and dispersed by adding HSF-AM into water above 40°C. The emulsion was stable when HSF-AM was mixed respectively with 1% 1-12SO4 and 5% plant-based tannins. The chemical oxygen demand (COD) and turbidity in the fatliquoring spent liquors alter the fatliquoring process of goatskin shoe upper leather was reduced when HSF-AM spontaneously precipitated at room temperature for the four mixtures of sulfonated rapeseed ail (SFIO) and HSF-AM. The leather samples presented excellent light fastness and low fogging values due to the high saturation degree (low iodine value), the good nanometer dispersion (120nm), and the stability of the nanoparticles emulsion. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of HSF-AM - Determination of the basic properties of HSF-AM - Emulsion stability of HSF-AM - Leather fatliquoring process
- RESULTS AND DISCUSSIONS : HSF-AM emulsion characteristics - iodine value, saponification value and hydroxyl value of HSF-AM - The dispersion stability of HSF-AM - The analysis of fatliquoring spent liquors - The physical properties of leather samples - The analysis of light fastness and colour difference - SEM analysis of the sample sections - OM analysis of leather sample surfaces - The fogging value of samplesEn ligne : https://drive.google.com/file/d/1OAdSh02h4CKTDBwdr1tOkm3sBJzRbALD/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26797
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Code-barres Cote Support Localisation Section Disponibilité 18265 - Périodique Bibliothèque principale Documentaires Disponible 18239 - Périodique Bibliothèque principale Documentaires Disponible Mechanism of the influence of the fatliquor on the bio-decolourization of an azo dye / Li Yanchun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 4 (07-08/2015)
PermalinkPermalinkModification of faltiquored split by in-situ polymerization of n-butyl-methacrylate / Xu Weixing in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 2 (03-04/2017)
PermalinkNourriture du cuir par des matières grasses peu extractibles / J. Plapper in TECHNICUIR, (Années 1969-1970)
PermalinkPerformance characteristics : Conventional vs. three compartment vessels in WORLD LEATHER, Vol. 15, N° 3 (05/2002)
PermalinkPerformance evaluation of dimethyl silicone oil as archaeological dry leather lubricant / Alireza Koochakzaei in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 4 (04/2020)
PermalinkPH as a parameter for the exponential stability of fatliquor emulsions / Malgorzata Kowalska in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 98, N° 1 (01-02/2014)
PermalinkPhosphate modified lanolin fatliquors produced by a sustained-released method / Wang Xue-Chuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 6 (11-12/2004)
PermalinkPermalinkPreparation and application of a novel cationic fatliquoring agent / Yang Hong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 1 (01-02/2019)
PermalinkPreparation and characteristics of graphene-based polymeric leather fatliquor / Zhenyu Zhang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 9 (09/2020)
PermalinkPreparation of amphiphilic acrylate copolymer containing active epoxy group and its fatliquoring : Effect on aldehyde-tanned leather / Huang Yingying in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 3 (05-06/2023)
PermalinkPreparation of antibacterial fatliquoring agents containing zinc oxide nanoparticles for leather industry / Ali Yorgancioglu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 5 (05/2019)
PermalinkPreparation of castor oil-based fatliquoring agent via a Pickering emulsion method for use in leather coating / Azam Sardari in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 6 (11/2019)
PermalinkPreparation of a new itaconate based amphoteric surfactant for fatliquor applications / R. Janardhanan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 7 (07/2012)
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