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Preparation and application of a high exhaustion chrome tanning auxiliary from limed fleshings / Hongjiao Liang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 3 (05-06/2023)
[article]
Titre : Preparation and application of a high exhaustion chrome tanning auxiliary from limed fleshings Type de document : texte imprimé Auteurs : Hongjiao Liang, Auteur ; Jun Zhao, Auteur ; Yulu Wang, Auteur ; Jin Liqiang, Auteur ; Zhang Feifei, Auteur Année de publication : 2023 Article en page(s) : p. 98-105 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Chaulage
Collagène
Cuirs et peaux -- Déchets -- Recyclage
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux -- Propriétés thermiques
Cuirs et peaux de chèvres
Echarnage
Epuisement des tanins
Hydrolysats de protéines
Morphologie (matériaux)
Tannage au chromeIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The recycling of leather solid waste has become a key issue aimed at realising the sustainable development of the leather industry. Recently, more and more attention has been paid on the recycling of limed fleshings. In this paper, a new recycling method for limed fleshings is reported. First, collagen protein hydrolysate (CH) was obtained by hydrolysing limed fleshings under alkaline conditions, and then the CHwas modified with cyanuric chloride (TCT) to obtain a high exhaustion chrome auxiliary (HECA). The coordination of HECA with chromium salts was investigated by ultraviolet-visible (UV-Vis) spectrum. HECA was applied in the chrome tanning process as an additive. The chrome concentration in effluent, the shrinkage temperature and mechanical properties of the resultant wet-blue were determined. Thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to analyse the properties of the obtained leather. The results show that HECA could coordinate with chromium salts and significantly improved the absorption and fixation of chrome salt into leather. When the amount of chrome tanning agent was 5% and the amount of HECA was 3%, the uptake of chrome tanning agent could be increased to 92.42%, the shrinkage temperature (Ts) of wet-blue leather could reach 102.8°C, the relative increases being 27.26% and 7.3°C, respectively, compared with the conventional tanning process. The obtained wet-blue leather demonstrated uniform grain, good fullness and improved mechanical properties. This recycling method provides a valuable insight of developing high exhaustion chrome tanning aid from limed fleshings, and consequently increases the economic and environmental benefits in leather production. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of collagen protein hydrolysate (CH) - Preparation of high exhaustion chrome auxiliary (HECA) - Coordination of HECA with chromium salt - Application of HECA in tanning process - Characterisation
- RESULTS AND DISCUSSIONS : Physicochemical index of CH - Characterisation of HECA - Coordination of HECA with chromium salt - Ts and chrome uptake rate - Thermal properties and morphology of the leather - XRD analysis of wet-blue leather - Mechanical properties of leather samples
- Table 1 : Tanning process of pickled goat pelts
- Table 2 : Basic characteristics of CH
- Table 3 : Mechanical properties of leather samplesEn ligne : https://drive.google.com/file/d/1DMihbpPPdVi8PEOBB1qi5aQ0eQbtKieW/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39580
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 107, N° 3 (05-06/2023) . - p. 98-105[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24110 - Périodique Bibliothèque principale Documentaires Disponible Preparation and application of a nanocomposite tanning agent - RNSP(MAA-BA) / Hui Pan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 1 (01-02/2008)
[article]
Titre : Preparation and application of a nanocomposite tanning agent - RNSP(MAA-BA) Type de document : texte imprimé Auteurs : Hui Pan, Auteur ; Mei Qi, Auteur ; Zhijun Zhang, Auteur Année de publication : 2008 Article en page(s) : p. 34-36 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acrylate de butyle
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux de chèvres
Matériaux hybrides
Méthacrylique, AcideL'histoire de l'acide méthacrylique commence en 1865, année où il est synthétisé pour la première fois à partir du méthacrylate d'éthyle.
L'acide méthacrylique est très réactif avec les groupes carboxyles, vinyles et esters.
Nanoparticules
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.
Tannage synthétique
Température de retraitIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A nanocomposite RNS/P(MAA-BA) was prepared and applied in tanning pickled goatskins . After tanning with RNS/P(MAA-BA) the tensile strength and other physical-mechanical properties of the resultant leather improved compared with those of chrome tannage. Leather tanned with RNS/P(MAA-BA) is full, soft and possesses fine grain as well as a high shrinkage temperature. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials - Preparation of RNS/P(MAA-BA) nanocomposite tanning agent - Tanning with RNS/P(MAA-BA) nanocomposite
- RESULTS AND DISCUSSION : FT-IR of RNS/P(MAA-BA) - Results of tanning with RNS/P(MAA-BA)
- Table 1 : Shrinkagete mperatureof the tannage 4% RNS/P(MAA-BA)
- Table 2 : Thickness increment ratio for the tannage
- Table 3 : Comparison of the physical-mechanical properties of the tannageEn ligne : https://drive.google.com/file/d/1kffTUMLkffk88kHXmZrSgD5jhBLA09Uv/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38920
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 92, N° 1 (01-02/2008) . - p. 34-36[article]Preparation and characterisation of sulfonated calix[4]arene and its application in chrome-free tanning / Yongxiang Zhou in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 4 (07-08/2018)
[article]
Titre : Preparation and characterisation of sulfonated calix[4]arene and its application in chrome-free tanning Type de document : texte imprimé Auteurs : Yongxiang Zhou, Auteur ; Jianzhong Ma, Auteur ; Dangge Gao ; Wenbo Li ; Yao Zhang Année de publication : 2018 Article en page(s) : p. 200-203 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage
CalixarènesUn calixarène est un macrocycle issu de la réaction d'un phénol et d'un aldéhyde. Les calixarènes ont des cavités hydrophobiques qui peuvent inclure des petites molécules ou des ions. Les plus couramment rencontrés sont les calixarènes à 4, 5, 6 et 8 unités phénols. La cavité ainsi formée permet de complexer des ions ou des petites molécules. On peut accéder à des calixarènes hydrosolubles en ajoutant des motifs ioniques par exemple.
Le terme calixarène est l'assemblage des mots calice (pour la forme de vase que certains calixarènes adoptent à l'état solide) et d'hydrocarbure aromatique arène (pour les cycles aromatiques formant les parois de ce vase). Il a été inventé en 1975 par David Gutsche.
Caractérisation
Chrome trivalent -- Recyclage
Composés inorganiques -- Synthèse
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux de chèvres
SulfonationIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Chrome tanning is the main tanning leather method. However, the absorption of chromium is incomplete and residues are present in waste liquors thus polluting the environment. Moreover, Cr3+ will oxidise into carcinogenic Cr6+ under certain conditions. Here we a present a novel chrome-free tannage. The calix[4]arene was synthesized using tert-butyl phenol and formaldehyde as raw materials. The calix[4]arene was then sulfonated with concentrated sulfuric acid. The structure was characterised by FTIR and 1HNMR. The sulfonated calix[4]arene was applied in goatskin tanning. The results showed that the sulfonated calix[4]arene had a tanning effect. The physical and mechanical, properties of the tanned leather were better than those of conventional chrome-tanned leather. Note de contenu : - Materials
- Synthesis of sulfonated calix[4]arene
- Characterisation
- Application and detection methodEn ligne : https://drive.google.com/file/d/1sECRJPhRfQzPKkOT0cIgBaepWYDuuezL/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30903
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 4 (07-08/2018) . - p. 200-203[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20126 - Périodique Bibliothèque principale Documentaires Disponible Preparation and characterization of modified protein retanning agent based on leather waste / Wang Xuechuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 3 (05-06/2016)
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Titre : Preparation and characterization of modified protein retanning agent based on leather waste Type de document : texte imprimé Auteurs : Wang Xuechuan, Auteur ; Zhang Ting, Auteur ; Ren Longfang, Auteur ; Qiang Taotao, Auteur Année de publication : 2016 Article en page(s) : p. 136-141 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acrylate de butyle
Agents de tannage
Caractérisation
Collagène
Cuirs et peaux -- Déchets -- Recyclage
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux de chèvres
Greffage (chimie)
Retannage
StyrèneIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Collagen extracted from leather wastes was used as the main raw material, a modified protein retanning agent was prepared by free radical polymerization reaction with butyl acrylate and styrene. The product was characterized by FT-IR, TEM, particle size analysis and other methods. The retanning properties were studied on goat garment leather. The results showed that grafting took place between collagen and the non-ionic monomers. The grafting rate was about 65%. The latex particles of the modified collagen cross-linking emulsion were spherical and uniform, the average particle size was about 117nm. The resistances of the product to electrolyte, acid and alkali were good. The thickening rate [substance increase] of the leather was about 10% when using the retanning agent. The leather has good resistance to wet and dry rubbing after retanning, the fixing effect was remarkable. The shrinkage temperature was up to 122°C. Compared with similar commercial retanning agents, the tensile strength and tearing strength of leather retanned by the self-prepared retanning agent increased by 28.5% and 37.8%, respectively. Note de contenu : - EXPERIMENTAL PROCEDURES : Reagents and apparatus - Preparation of modified collagen retanning agent - Characterization - The application of collagen retanning agent on leather
- RESULTS AND DISCUSSION : Characterization of modified collagen retanning agent - The application of collagen retanning agent in leatherEn ligne : https://drive.google.com/file/d/1flVupBNcHccMn5FrnO29d9kywrKG8Yky/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26447
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 100, N° 3 (05-06/2016) . - p. 136-141[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18140 - Périodique Bibliothèque principale Documentaires Disponible Preservation of goatskin using tamarindus indica leaf extract - Green process approach / A. Tamil Selvi in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 3 (05-06/2015)
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Titre : Preservation of goatskin using tamarindus indica leaf extract - Green process approach Type de document : texte imprimé Auteurs : A. Tamil Selvi, Auteur ; James Kanagaraj, Auteur ; P. Saravanan, Auteur ; V. Brindha, Auteur ; T. Senthilvelan, Auteur Année de publication : 2015 Article en page(s) : p. 107-114 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Analyse
Cuirs et peaux -- Conservation
Cuirs et peaux de chèvres
Extraits de plantes:Extraits (pharmacie)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Preservation of animal skin using common salt is widely followed globally and has been in vogue since time immemorial. Salt used for preservation is discharged along with the soak liquor and contributes to 70% of TDS load from leather manufacturing. As an attempt to reduce chloride and TDS, plant based preservation with Tamarindus indica was studied. Different concentrations of salt and Tamarind leaf extract were applied on freshly-flayed goatskins based on its green weight and compared with control (40% salt alone/kg of skin wt.). Sensory evaluation of the preserved skin was done every day (till 21st day) for smell, hair slip and putrefaction. The samples were collected on 1st, 2nd, 3rd, 71h, 14th and 21st day and tests such as moisture content, total nitrogen content, protein content, hydroxyproline content and microbial load for finding out the curing efficiency. Skin those were preserved for 21 days were processed into leather and the leather and properties were examined. The result showed that 15% salt with 15% Tamarindus indica and 10% salt with 15% Tamarindus indica (Test) showed good preservation systems. Note de contenu : - Skin - Plant extract
- Minimal inhibitory concentration (MIC)
- FT-IR analyses
- Preservation experiments
- Determination of moisture content
- Determination of total extractable nitrogen content
- Hydroxyproline estimation
- Determination of bacterial count
- Pollution load generated in soaking process
- Leather making
- Physical strength properties of leather
- Colour measurementEn ligne : https://drive.google.com/file/d/1imFQyIcMmGd4FjqpKyROPTn8IewrIBbE/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24253
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 99, N° 3 (05-06/2015) . - p. 107-114[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17271 - Périodique Bibliothèque principale Documentaires Disponible PermalinkUn processus standard de fabrication à partir de chèvres mi-tannées au végétal / M. Bouchard in TECHNICUIR, N° 2 (02/1975)
PermalinkProduction of titanium-tanned goat suede garment leathers / M. P. Swamy in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 66 (Année 1982)
PermalinkProperties of leather produced from a sample of australian feral goats / P. J. Holst in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. N° 71 (Année 1987)
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)
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)
PermalinkRapid fiber opening process for skins : an approach for fail-safe chemical-free process / Jayanthi Durga in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 1 (01/2015)
PermalinkRecovery of industrially useful hair and fat from enzymatic unhairing of goatskins during leather processing / Joseph Ondari Nyakundi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 6 (06/2022)
PermalinkRecycling in goat skin lime unhairing / A. Crispim in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 2 (03-04/2011)
PermalinkRelation between drape and mechanical properties of goat suede garment leathers / K. Krishnaraj in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 93, N° 1 (01-02/2009)
PermalinkRemarques sur le travail des petites peaux / H. Roth / Leverkusen [Allemagne] : Bayer (nd)
PermalinkA research on the use of aluminum sulphate in parchment production and its effects on ageing and color / Nilgün Kayahan Kolan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 7 (07/2022)
PermalinkRetanning performance of carboxymethyl starch and its effects on dyeing / Cigdem Kilicarislan Ozkan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 2 (02/2022)
PermalinkReuse of solid waste from juice industry (citrus sinensis peel) in the extraction of antioxidants with enhanced activity through polymer encapsulates for the preservation of skin / Marimuthu Pradeep Kumar in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 7 (07/2014)
PermalinkSalt free preservation of raw goat skin using swietenia mahogany (seed) extract / Md. Abdur Razzaq in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 2 (02/2022)
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