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Development of nano bio aldehyde tanning agent for sustainable leather manufacture / Arjunan Yasothai in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 4 (04/2023)
[article]
Titre : Development of nano bio aldehyde tanning agent for sustainable leather manufacture Type de document : texte imprimé Auteurs : Arjunan Yasothai, Auteur ; Gladstone Christopher Jayakumar, Auteur ; Angayarkanny Subramanian, Auteur ; Swarna Vinodh Kanth, Auteur Année de publication : 2023 Article en page(s) : p. 162-168 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agents de tannage
AldéhydesUn aldéhyde est un composé organique, faisant partie de la famille des composés carbonylés, dont l'un des atomes de carbone primaire (relié au plus à 1 atome de carbone) de la chaîne carbonée porte un groupement carbonyle.
L'aldéhyde le plus simple est le formaldéhyde (ou méthanal), aussi appelé formol lorsqu'il est en solution aqueuse.
Un aldéhyde dérive formellement d'un alcool primaire (oxydation) dont le groupement hydroxyde -OH est en bout de chaîne et se forme suite à l'enlèvement de deux atomes H d'où le nom "alcool déshydrogéné" ou aldéhyde.
Biopolymères
Caractérisation
Cuirs et peaux
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux -- Propriétés organoleptiques
Cuirs et peaux -- Propriétés physiques
Essais dynamiques
Morphologie (matériaux)
Nanoparticules
Post-tannage
Stabilité hydrothermale
Tannage organique
Température de retraitIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Exploring the application of natural biopolymers in leather manufacture is a need of the hour to achieve sustainability. The present research work explores the possibility of using modified biopolymer nanoparticles as a tanning agent. Starch, a polysaccharide with high functionalization, is converted into Nano Bio Aldehyde (NBA) through periodate oxidation as water-in-oil microemulsion method. The synthesized product was characterized by its physico-chemical nature. The prepared NBA shows an aldehyde content of 85%, which endorses its application as a tanning agent. Experimental leather trials were carried out to assess the tanning efficacy and found that NBA tanned leathers show a shrinkage temperature of 90°C. Physical characteristics of the experimental leathers were found to be 24 N/mm2 and 90 N for tensile and tear strength, respectively. The study provides a holistic understanding of modified biopolymer as a nano tanning agent to manufacture leather. Note de contenu : - MATERIALS AND METHODS : Materials
- METHODS : Preparation of nanobioaldehyde particles - Characterization of the product NBA : Determination of aldehyde content - Fourier Transform Infrared (FTIR) analysis - Particle size analysis - Thermogravimetric analysis (TGA) - Differential Scanning Calorimetric (DSC) analysis - Preparation of DAS and NBA tanned leathers - Characterization of DAS and NBA tanned leathers hydrothermal stability measurement - Mechanical strength - Subjective evaluation of cprocessed leathers - Morphological evaluation
- RESULTS AND DISCUSSION : Structural alterations in NBA - The morphological structure of SS and NBA - Characteristics of the prepared particles - Thermal properties of SS and NBA - Hydrothermal resistance of tanned leathers - Physical strength characteristics of the crust leathers - Subjective evaluation of the tanned crust leathers - Morphological structures of control and experimental tanned leathers
- Table 1 : Experimental NBA tanning process
- Table 2 : Post tanning process
- Table 3 : Physical strength properties of control and experimental NBA tanned leather
- Table 4 : Organoleptic properties of NBA tanned leatherDOI : https://doi.org/10.34314/jalca.v118i4.7208 En ligne : https://drive.google.com/file/d/1Mx9yT5dde0Awk0tShiDIUvsrqIc5RIkt/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39185
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Code-barres Cote Support Localisation Section Disponibilité 24030 - Périodique Bibliothèque principale Documentaires Disponible Do leather anisotropic properties have an effect on shrinkage temperature ? / Ewa Marcinkowska in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 5 (05/2018)
[article]
Titre : Do leather anisotropic properties have an effect on shrinkage temperature ? Type de document : texte imprimé Auteurs : Ewa Marcinkowska, Auteur ; Gabriela Zielinska, Auteur Année de publication : 2018 Article en page(s) : p. 163-171 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anisotropie
Chrome
Cuirs et peaux -- Analyse
Cuirs et peaux -- Propriétés mécaniques
Essais dynamiques
Glutaraldéhyde
Statistique
Tannage
Température de retrait
Traction (mécanique)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Herein are the results of studies of mechanical properties and shrinkage temperature of cowhide leather tanned with modified glutaraldehyde and chrome. The tests were carried out on samples cut from both kinds of leather parallel and perpendicular to the backbone. The aim of these studies was determining whether the sample orientation to the backbone, thus leather anisotropic properties defined by its tensile strength and ultimate extension, has an effect on shrinkage temperature and kinetics of this process.
Mechanical properties were tested according to PN-EN ISO 3376:2012 Leather – Physical and mechanical tests – Determination of tensile strength and percentage extension. The conditions for shrinkage temperature measurements were set according to guidelines specified in PN-EN ISO 3380:2015-11 Leather – Physical and mechanical tests – Determination of shrinkage temperature up to 100°C. The experiment was carried out by using an instrument of our own design enabling automatic recording of leather specimen length changes during measurement.
The results of mechanical tests allowed the determination of the degree of differentiation of obtained tensile strength and ultimate extension values depending on test sample orientation to the backbone. For leather tanned with modified glutaraldehyde the coefficient of variation with respect to tensile strength in both directions was 0.31, while for chrome tanned leather was 0.44. The coefficient of variation for ultimate extension calculated for both directions was 0.55 and 0.42 for glutaraldehyde and chrome tanned leathers, respectively.
The slope of obtained regression lines was compared to find any statistically significant differences in leather shrinkage rate depending on orientation to the backbone. The results of analyses performed for two differently tanned leathers show no statistically significant differences in shrinkage rate depending on cut orientation. Thus, anisotropy of mechanical properties of leather samples under investigation does not affect both shrinkage temperature and the rate of this process.Note de contenu : - MATERIAL
- METHODS : Mechanical properties test method - Method to measure and analyze leather shrinkage temperature - Methods of statistical analysis
- TABLES : 1. Tensile strength and ultimate extension for themodified glutaraldehyde-tanned leather - 2. Tensile strength and percentage extension for the chrome-tanned leather - 3, 4, 5, 6 - Summary results of fitting a model y=A*+B at α = 0.05En ligne : https://drive.google.com/file/d/1CtzGHhwPpBlMy9Wp8yw3WGOKxayuLAE5/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30534
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Code-barres Cote Support Localisation Section Disponibilité 19877 - Périodique Bibliothèque principale Documentaires Disponible Effect of an amphoteric chromium-free polymer retanning agent with reactive aldehyde groups on collagen fibers / Wang Xuechuan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 10 (10/2019)
[article]
Titre : Effect of an amphoteric chromium-free polymer retanning agent with reactive aldehyde groups on collagen fibers Type de document : texte imprimé Auteurs : Wang Xuechuan, Auteur ; Hao Dongyan, Auteur ; Xiaoye Chai, Auteur ; Li Ji, Auteur Année de publication : 2019 Article en page(s) : p. 373-381 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Absorption
Agents de tannage
AldéhydesUn aldéhyde est un composé organique, faisant partie de la famille des composés carbonylés, dont l'un des atomes de carbone primaire (relié au plus à 1 atome de carbone) de la chaîne carbonée porte un groupement carbonyle.
L'aldéhyde le plus simple est le formaldéhyde (ou méthanal), aussi appelé formol lorsqu'il est en solution aqueuse.
Un aldéhyde dérive formellement d'un alcool primaire (oxydation) dont le groupement hydroxyde -OH est en bout de chaîne et se forme suite à l'enlèvement de deux atomes H d'où le nom "alcool déshydrogéné" ou aldéhyde.
Caractérisation
Chimie analytique
Colorants acides
Composés amphotériques
Composés organiques -- Synthèse
Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Cuirs et peaux -- Teinture
Cuirs et peaux de moutons
Douceur (toucher)
Essais de résilience
Essais dynamiques
Frottements (mécanique)
Huiles et graisses -- Absorption
Liaisons chimiques
Polymères
Retannage
Tannage végétal
Température de retraitIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A chromium-free amphoteric polymer retanning agent was prepared by free radical polymerization reaction of undecylenic aldehyde (UAL), acrylic acid (AA) and dimethyl diallyl ammonium chloride (DADMAC) as raw materials. The structure of amphoteric polymer retanning agent was characterized by FT-IR and 1H-NMR. Amphoteric polymer retanning agent was applied to the retanning of vegetable-tanned light leather to investigate the binding ability of crust leather to anionic dyes, fat liquoring agent and physical-mechanical properties of the crust leather. The results showed that the synthesized amphoteric polymer retanning agent was successfully prepared. The application trial indicated that the amphoteric polymer retanning agent can improve the binding capacity between leather and anion dye and fat liquoring agent in the retanning process. The dye absorption rate of the crust leather was up to 99.58% and the dyeing liquor was clear. Furthermore, color of the crust leather was uniform and full and its K/S value and drywet rub fastness, thickening rate and physical-mechanical properties were higher than that of the retanned leather by acrylic resin retanning agent. In addition, the crust leather after retanning with amphoteric polymer retanning agent has good softness, and the absorption rate of fat liquoring agent was 99.62%. The above results showed that amphoteric polymer retanning agent possessed the good retanning property in vegetable tanned sheep garment leather. Note de contenu : - EXPERIMENTAL : Materials - Instruments - Synthesis of amphoteric polymer retanning agent (PADU) - Fourier Transform Infrared Spectroscopy (FT-IR) - Nuclear Magnetic Resonance Hydgogen Spectra (H-NMR) - Test of shrinkage temperature - Test of uptake of dye - Test of color strength (K/S) value - Test of dry and wet rub fastness - Test of absorption of fat liquoring agent - Test of softness - Test of thickening percentage - Test of tensile strength and tearing strength - SEM observation
- RESULTS AND DISCUSSION : FT-IR analysis - H-NMR analysis - Shrinkage - Contrast of bath before and after dyeing - Comparison of pictures of crust leathers retanned by different retanning agent - Dyeing properties of the crust leathers - Comparison of uptakes of fat liquoring agent in different crust leathers - Physical properties of crust leather - SEM observationEn ligne : https://drive.google.com/file/d/1ZhR1F8pIPUy_fgU3qYJV6V4qs6tezhHl/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33033
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Code-barres Cote Support Localisation Section Disponibilité 21208 - Périodique Bibliothèque principale Documentaires Disponible Effect of tanning agents on collagen structure and response to strain in leather / Katie H. Sizeland in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 11 (11/2016)
[article]
Titre : Effect of tanning agents on collagen structure and response to strain in leather Type de document : texte imprimé Auteurs : Katie H. Sizeland, Auteur ; Hannah C. Wells, Auteur ; Richard L. Edmonds, Auteur ; Nigel Kirby, Auteur ; Richard G. Haverkamp, Auteur Année de publication : 2016 Article en page(s) : p .391-397 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agents de tannage
Chrome
Collagène
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux de moutons
Déchirure (mécanique)
Déformations (mécanique)
Essais dynamiques
Mimosa et constituants
Oxazolidine
Résistance des matériaux
Réticulation (polymérisation)
Sulfate de tétrakis hydroxyméthyl phosphoniumLe sulfate de tétrakis hydroxyméthyl phosphonium est un myxobactéricide qui offre une prévention efficace contre les biofilms microbiens dans les eaux de traitement, et ce, pour une vaste gamme de micro-organismes formant des biofilms. Le sulfate de tétrakis (hydroxyméthyl) phosphonium agit principalement en augmentant la perméabilité de la membrane externe de l'enveloppe de la cellule microbienne, ce qui entraîne la libération rapide de protéines et d'autres substances cellulaires par les cellules. En outre, le sulfate de tétrakis (hydroxyméthyl) phosphonium inhibe le processus de sulfatoréduction dans les bactéries réductrices de sulfate.
Température de retrait
Traction (mécanique)
ZirconiumIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A variety of tanning agents are used to produce leather of different mechanical performances and properties. How different tanning agents affect the structure of leather, and consequently the mechanism underlying the performance of the differently tanned leathers, is not well understood. We used small-angle X-ray scattering to investigate the structure of ovine leather tanned with chromium, zirconium, mimosa, oxazolidine or tetrakis hydroxymethyl phosphonium sulfate (THPS), or selected pairs of these agents. Leather tanned using THPS and THPS in combination with mimosa retained the most oriented collagen fibril structure. Treatment with chromium, zirconium or zirconium and mimosa resulted in the least oriented fibril structures. The effect of oxazolidine with mimosa was intermediate between these. A high natural collagen fibril orientation in a skin is normally associated with high strength while a high degree of crosslinking normally results in a lower fibril orientation. We suggest that the extent of crosslinking in the samples is reflected in their fibril orientation, with more crosslinking producing stronger leathers. This interpretation is supported by the differences in shrinkage temperatures: those leathers for which orientation index (a measure of collagen fibril alignment) changed most had a lower shrinkage temperature (which is normally interpreted as more “tanning”). This provides a greater understanding of the mechanism of action of tanning agents in the development of the properties of leather. Note de contenu : - METHODS : Chromium (standard) - Zirconium - THPS - Oxazolidine + Mimosa - Zirconium + Mimosa - THPS + Mimosa - Mechanical testing - Shrinkage temperature - SAXS
- RESULTS : Tear strength - Tensile strength - Stress-strain - SAXS - OI - OI and strain - d-spacing and stress - Shrinkage temperatureEn ligne : https://drive.google.com/file/d/18XKbg7Exz9EEkW0BlT9kl1eCqePq4zfO/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27154
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Code-barres Cote Support Localisation Section Disponibilité 18460 - Périodique Bibliothèque principale Documentaires Disponible Effect of the type of retanning on hygienic properties of crust leathers / Jan Zarlok in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 1 (01-02/2017)
[article]
Titre : Effect of the type of retanning on hygienic properties of crust leathers Type de document : texte imprimé Auteurs : Jan Zarlok, Auteur ; Malgorzata Kowalska, Auteur ; Krzysztof Smiechowski, Auteur Année de publication : 2017 Article en page(s) : p. 21-26 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorption
Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Désorption
Essais (technologie)
Perméabilité
Résistance à l'humidité:Résistance à l'eau
Retannage
Température de retrait
Vapeur d'eau
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Test results of semi-finished crust made from wet-blue are presented. Mineral, synthetic, vegetable and aldehyde tannins were used as retanning agents. Absorption, desorption and permeability of water vapour (WVP) were determined using the standardised method and UTH Radom method. Softness, shrinkage temperature and resistance to water of the semi-finished crust were determined as well. The tests have demonstrated that the hygienic properties of leathers are to a great degree dependent on types of retanning agents applied. Correlations have also been proved between permeability of water vapour (WVP) and between WVP and shrinkage temperature of crust leathers as per the standard and UTH Radom methods. Note de contenu : - TABLES : 1. Methods of retanning and fatliquoring of semi-finished wet-blue - 2. Retanning variants and designations of leather samples - 3. Results of determination of water vapour permeability - 4. Results of determination of absorption and desorption of water vapour - 5. Results for shrinkage temperature, thickness, moisture content and softness of leather - 6. Results for leather resistance to water
- FIGURES : 1. Drying machine WPS 50 SX (a) with the closed ; (b) with the open cover - 2. correlation between values of water vapour permeability measured by the standard and UTH Radom methods - 3. The difference between absorption and desorption of water vapour of the tested leathers - 4. Dependence of water vapour permeability on shrinkage temperature of leathersEn ligne : https://drive.google.com/file/d/1giUkfeFF9_sbCPgo6XfQxV9fjbZsK_rj/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27985
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Code-barres Cote Support Localisation Section Disponibilité 18711 - Périodique Bibliothèque principale Documentaires Disponible Effect of UV irradiation of the properties of goatskin collagen matrices in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 2 (03-04/2017)
PermalinkElectron microscopy in leather research / V. Mohanaradhakrishnan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 54, N° 6 (06/1970)
PermalinkEtude des propriétés tannantes des sels d'aluminium / Philippe Charlet / 1982
PermalinkEvaluation of the physical properties of goatskins tanned using banana (Musa spp.) leaf midrib tannins / James K. Wangui in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 1 (01/2024)
PermalinkExtraction of a novel tanning agent from indigenous plant bark and its application in leather processing / Raju Kumar Das in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 4 (Année 2022)
PermalinkFundamental research on the mechanism of oil-tanning with alkyl sulfonyl chloride / Zhou Hualong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 4 (07-08/2005)
PermalinkPermalinkGlutaraldehyde retannage of chrome leather. Effect of ambient storage on selected properties of the leather / E. H. Harris in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXX (Année 1975)
PermalinkHigh exhaust tanning systems using a novel cross-linking agent (CA) / James Kanagaraj in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 3 (05-06/2006)
PermalinkHigh performance leather based on in situ formation of reduced graphene oxide in chrome tanning / Xinle Yang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 5 (05/2022)
PermalinkImpact of microwave irradiation on vegetable tanning / Jiacheng Wu in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 1 (01-02/2018)
PermalinkInfluence of benzenecarboperoxoic acid on chamois leather process in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 2 (02/2020)
PermalinkInside into understanding incorporation of glycidoxypropyltrimethoxysilane for improving hydrothermal stability and porous structure of silicic acid tanned leather / Zetian Zhang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 8 (08/2019)
PermalinkInvestigations into the controlled drying of sheepskins / J. R. Yates in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXI (Année 1966)
PermalinkA method for measuring shrinkage temperature of leather / Ning Duo in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 5 (09-10/2011)
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