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675 : Technologie du cuir et de la fourrure |
Ouvrages de la bibliothèque en indexation 675
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Synthesis and characterization of large particle size self-matting core-shell acrylic resin / Hao Peng in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 9 (09/2022)
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Titre : Synthesis and characterization of large particle size self-matting core-shell acrylic resin Type de document : texte imprimé Auteurs : Hao Peng, Auteur ; Huan Wei, Auteur ; Jun Xiang, Auteur ; Haojun Fun, Auteur Année de publication : 2022 Article en page(s) : p. 379-390 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agent mattant
Caractérisation
Core-Shell
Essais (technologie)
Polyacrylate de butyle
Polyacryliques
Polymères -- Synthèse
Polymérisation en émulsion
Revêtements organiquesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Acrylic resin plays an important role in leather-making, such as finishing agent, filler and tanning agent. Acrylic resin can be easily fabricated via conventional emulsion polymerization, but how to prepare large particle size with self-matting effect has always been a challenge. In this paper, a continuous three-stage polymerization method: seed-polymerization coupled core-polymerization and shell polymerization was employed to prepare large particle size self-matting acrylic resin emulsion. Simultaneously, the effect of feeding methods on particles size and the effects of latex particle size, shell structure and cross-linking degree on the morphology and gloss of coating were investigated. The Z-average size of PBA seed latex particles was 213.4 nm for semi-continuous feeding method but 82.3nm for batch feeding method. After three-time continuous growth, the seed emulsion turned into core emulsion, and the particle size of core latex reached about 700nm. In third stages ofshell polymerization, the core emulsion was changed into core-shell emulsion, and the latex particle size increased further to 804nm. The latex particle size, core-shell structure and cross-linking degree of shell layer were found to influence the gloss of the coating. Large latex particle size imparted the film spherical micro-rough surface, soft-core combined with hard-shell structure led to deformation resistant during film formation and cross-linking of shell layer increased the densification of shell layer, all contributed to the coating rough surface, as a result, increasing the matting effect of the coating. Finally, the leather gloss was reduced from 5.8° to 1.2°. Note de contenu : - EXPERIMENT : Raw materials - Preparation of acrylic resin emulsion - Preparation of PBA seed emulsion - Preparation of PBA core growth emulsion - Preparation of P(BA-MMA/AN) core-shell emulsion - Preparation of leather coating
- CHARACTERIZATION : Coating gloss test - Measurement of latex particle size distribution - Characterization of surface morphology and roughness - Characterization of glass transition temperature
- RESULTS AND DISCUSSION : Effect of feeding mode on particle size of seed emulsion - Growth of core latex particle size - Effet of hardness of shell polymer on the surface morphology of coating - Effect of cross-linking on the surface morphology and gloss of the coating
- Table 1 : Recipes for the preparation of PBA seed latexes
- Table 2 : Recipes for the preparation of PBA core latexes
- Table 3 : Recipes for the preparation of P(BA-MMA/AN) core-shell latexes
- Table 4 : Diameter and number density of PBA seed latex particles at termination stage of polymerization
- Table 5 : Variation of diameter and number density of PBA after growth
- Table 6 : The number of PBA particles at initiation and termination stage of polymerization
- Table 7 : Glass transition temperature and gloss of films with soft shell and hard shell
- Table 8 : Coating roughness, theroetical ight reflectivity and gloss with different acrylic resin coatingDOI : https://doi.org/10.34314/jalca.v117i9.6168 En ligne : https://drive.google.com/file/d/1msWSAo-uopmw_m_e7iSiVOsAYNkZalmh/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38077
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 9 (09/2022) . - p. 379-390[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23609 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and evaluation of a novel shavings-based cationic flocculant / Dai Chunji in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 2 (03-04/2018)
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Titre : Synthesis and evaluation of a novel shavings-based cationic flocculant Type de document : texte imprimé Auteurs : Dai Chunji, Auteur ; Wang Xuechuan, Auteur ; Wei Fei, Auteur ; Qiang Taotao, Auteur ; Ren Longfang, Auteur Année de publication : 2018 Article en page(s) : p. 81-87 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Collagène
Composés organiques -- Synthèse
Copolymères greffés
Copolymérisation
Eaux usées -- Epuration
Extraction (chimie)
Floculant
Floculation
Greffage (chimie)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A cationic collagen flocculant (PCDAC) was synthesized by graft copolymerization using industrial gelatin extracted from leather shavings as the raw material with acryloyloxyethyl trimethyl ammonium chloride (DAC) as the monomer. The synthesis was initiated with tert-butyl hydroperoxide and sodium sulfite. The graft copolymer was characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA) and scanning electron microscopy (SEM).
The effects of PCDAC dosage, system pH, flocculation temperature and time on PCDAC flocculation were studied and the optimum conditions were as follows: PCDAC dosage 0.03g/mL; system pH7.0 ; flocculation temperature 40°C ; and flocculation time 20 minutes. Under the optimum conditions, the new flocculant showed an excellent flocculation effect, and the removal rate of pollutants in a simulated oil field wastewater ranged up to 94.1%. The flocculation mechanism was also discussed.Note de contenu : - EXPERIMENTAL PROCEDURES : Material and apparatus - Extraction of collagen - Synthesis of cationic collagen flocculant (PCDAC) - Analysis of PCDAC
- RESULTS AND DISCUSSION : Physicochemical characteristics of the PCDAC graft copolymers - Flocculation performance of PCDACEn ligne : https://drive.google.com/file/d/1U_tusIyRsZpCvorfxYG41y2xccH_Iek-/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30560
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 2 (03-04/2018) . - p. 81-87[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19867 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and leather application properties of a carboxylated graphene oxide modified waterborne polyacrylate leather finishing agent / Shuangquan Lai in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 6 (06/2019)
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Titre : Synthesis and leather application properties of a carboxylated graphene oxide modified waterborne polyacrylate leather finishing agent Type de document : texte imprimé Auteurs : Shuangquan Lai, Auteur ; Yong Jin, Auteur ; Liangjie Shi, Auteur ; Weining Du, Auteur Année de publication : 2019 Article en page(s) : p. 204-215 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Carboxylation
Composés inorganiques -- Synthèse
Cuirs et peaux -- Finition
Cuirs et peaux -- Propriétés mécaniques
Mesure
Oxyde de graphène
Polymères en émulsionIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Carboxylated graphene oxide (GO-COOH), prepared by the reaction of bromoacetic acid with the hydroxyl and epoxy groups on the graphene oxide (GO) layers, was blended into a poly(ethyl acrylate) (PEA) emulsion and a PEA emulsion based polyacrylate leather finishing agent respectively, to prepare PEA/GO-COOH composite emulsions and GO-COOH modified waterborne polyacrylate leather finishing agents. The consequence of the amount of GO-COOH on the properties of the PEA film and related leather coatings were systematically investigated. The results indicate that stable GO-COOH dispersed composite emulsions were generated leading to homogeneously dispersed composite films. With an increase in the GO-COOH amount from 0 wt% to 0.5 wt%, the tensile strength increased by 106.2%. Additionally, TGA results demonstrated an improvement of the thermal stability of PEA film after modified with GO-COOH. Most importantly, the folding resistance and rubbing fastness properties of leather finished with GO-COOH modified polyacrylate leather finishing agents were improved proportionate to the GO-COOH amount. Therefore, the GO-COOH modified waterborne polyacrylate leather finishing agent possesses improved performances and likely offers beneficial leather finishing application properties. Note de contenu : - MATERIALS AND METHODS : Materials - Preparation of oly(ethyl acrylate) (PEA) emulsion - Synthesis of graphene (GO) - Synthesis of carboxylated graphene oxide (GO-COOH) - Preparation of PEA/GO-COOH composite emulsions and films - Application of PEA emulsions and GO-COOH in leather finishing agent - Characterization and performance measurements characterization of GO and GO-COOH - Characterization of PEA/GO-COOH composite emulsions - Characterization of PEA/GO-COOH composite films physical mechanical properties - Measurement of applied properties
- RESULTS AND DISCUSSION : Characterization of GO and COOH - Dispersion stability of the PEA/GO-COOH composite emulsions - Properties of the PEA/GO-COOH composite films - Determination of applied propertiesEn ligne : https://drive.google.com/file/d/1pZIl1PacEBReSfkDlqVAWHbSCsNqtalW/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32653
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIV, N° 6 (06/2019) . - p. 204-215[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20992 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and performance of nano-encapsulated phase change materials for leather / Chen Jie in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 6 (11-12/2017)
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Titre : Synthesis and performance of nano-encapsulated phase change materials for leather Type de document : texte imprimé Auteurs : Chen Jie, Auteur ; Li Xiaoxing, Auteur ; Jia Jizhang, Auteur Année de publication : 2017 Article en page(s) : p. 308-311 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Composés organiques
Cuir
Dioxyde de titane
Encapsulation
Essais (technologie)
Miniémulsions
Nanotechnologie
OctadécaneL'octadécane ou n-octadécane est l'alcane linéaire de formule brute C18H38. C'est aussi le nom générique des isomères de formule C18H38.
Polymérisation en émulsion
Polystyrène
Taille des particules
Transition de phaseEn physique, une transition de phase est une transformation du système étudié provoquée par la variation d'un paramètre extérieur particulier (température, champ magnétique...).
Cette transition a lieu lorsque le paramètre atteint une valeur seuil (plancher ou plafond selon le sens de variation). La transformation est un changement des propriétés du système.Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The nano-encapsulated phase change materials for leather with octadecane as core and potystyrene as shell were prepared by mini-emulsion polymerization. Nano-titanium dioxide was added in the preparation. The prepared nano-encapsulated phase change material for leather has good performance which can improve the temperature control and the comfort properties of leather. Note de contenu : - EXPERIMENTAL PROCEDURES : Experimental materials - Experimental methods - Testing and characterization - Application
- RESULTS AND DISCUSSION : The chemical structure of the product - The particle size of the product - The phase change latent heat of the product - The effect of the product on leatherEn ligne : https://drive.google.com/file/d/1RYWZohKMsb7hU7sKxdRew-jEfKjK53Pl/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29670
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 101, N° 6 (11-12/2017) . - p. 308-311[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19446 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and urea-loading of a novel biosuperabsorbent polymer based on leather waste / Hu Zaiyin in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 2 (03-04/2015)
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Titre : Synthesis and urea-loading of a novel biosuperabsorbent polymer based on leather waste Type de document : texte imprimé Auteurs : Hu Zaiyin, Auteur ; Yi Shouhong, Auteur ; Hu Wei, Auteur ; Yuling Tang, Auteur ; Wang Ru, Auteur Année de publication : 2015 Article en page(s) : p. 51-57 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants
Copolymère acide acrylique acrylamide
Copolymères -- Synthèse
Cuirs et peaux -- Déchets -- Recyclage
Greffage (chimie)
Humidité -- Absorption:Eau -- Absorption
UréeIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : In order to develop an eco-friendly polymer, a novel superabsorbent polymer was synthesized by grafting the alkaline hydrolysis product of Leather waste (LW) to a copolymer of acrylic acid (AA) and acrylamide (Afv1)(PLW-g-(AA-co-AM) with microwave method assistance. The morphology of the samples was examined by scanning electron microscopy (SEM). Through a single factor experiment, various factors were explored which may affect the water absorption of such a superabsorbent polymer du ring preparation. The results showed that the optimum technological conditions of synthesizing PLW-g-(AA-co-AM) were : dosage of LW 15wt.% of total monomer mass, cross-linking agent 0.06wt.°/0 of monomer mass, neutralization degree 75%, AA: AM= 6 :1, initiator 0.6wt.% of monomer mass. According to this procedure, the PLW-g-(AA-co-AM) with a water-absorbency of 1191.5g/g and salt-absorbency of 94.4g/g was obtained. The product was used as adsorbant for urea, the urea load rate reached 87.76% when the concentration of urea was 10g/L. Meanwhile, the release of urea from the loaded PLW-g-(AA-co-AM) in deionized water exhibited specific release properties. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials - Swelling measurements : Tea-bag method - Instrumental analysis
- RESULTS AND DISCUSSIONS : Optimization of the grafting conditions - Loading and release of ureaEn ligne : https://drive.google.com/file/d/1PiVWaSmKFsQTY_zL8lgdvGzkXTi9x7V3/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23741
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 99, N° 2 (03-04/2015) . - p. 51-57[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17138 - Périodique Bibliothèque principale Documentaires Disponible Synthesis, application and comparison of aqueous polyurethane / Shuling Chai in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIII, N° 5 (05/2008)
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PermalinkSynthesis, characterisation and application of environment friendly polymers for producing sustainable leather / Muhammad Naveed Ashraf in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 1 (01-02/2021)
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PermalinkSynthesis, characterization and application of sulphite castor maleic adduct as an effective leather fatliquor / Muhammad Imran-Ul Haq in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 5 (09-10/2016)
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PermalinkSynthesis, characterization and application on leather of chromium (III), iron (II) and copper (II) complexes of novel pyrazole naphthol acid dyes in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 4 (07-08/2016)
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PermalinkSynthesis of biological based anionic fatliquor and its application on leather / Muhammad Kashif Pervez in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 10 (10/2015)
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PermalinkSynthesis of highly carboxylate acrylic resins for leather impregnation / Lluis Ollé in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 1 (01/2012)
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PermalinkSynthesis of hyper-branched polymer with terminal amidogen and its application as formaldehyde scavenger in leather / Wang Xuechuan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIII, N° 12 (12/2008)
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PermalinkSynthesis of ionic liquid-based amphiphilic polymer surfactant and its application in leather fatliquoring / Hao Dongyan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 2 (03-04/2023)
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PermalinkSynthesis of modified hydrogenated castor oil/nano-ZnO composites and its application as fatliquoring agent / Duan Limin in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 4 (07-08/2015)
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PermalinkSynthesis of modified poly(acrylic acid-acrylonitrile) retanning agent with mannich reaction and its application / Huaxiang Yang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCVI, N° 11 (11/2001)
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PermalinkSynthesis of multi-site polyether amine triazine derivative for sustainable leather manufacturing / Xinju Jia in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 4 (04/2022)
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PermalinkSynthesis of novel polyurethane cationomers and their application in leather finishing / B. Chattopadhyay in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXIV (Année 1989)
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PermalinkSynthesis of reactive silicones and their application to leather / A. L. Mukundan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 74 (Année 1990)
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PermalinkSynthesis of sulfonated Sesamum indicum L. seed oil and its application as a fatliquor in leather processing / Adachukwu N. Nkwor in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)
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PermalinkSynthesis of tannic acid waterborne polyurethane in application for leather finishing / Haihang Luo in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 104, N° 3 (05-06/2020)
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PermalinkSynthesis, properties and application in leather colouration of novel polymeric dye based on hyperbranched poly(amine-ester) / Yulu Wang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 4 (07-08/2017)
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PermalinkSynthesis properties of a cationic acrylic resin leather finish with a core-shell structure / Sui Zhihui in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 3 (05-06/2012)
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PermalinkSynthetic fatliquoring agents / F. Pieper in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 63, N° 2 (03-04/1979)
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PermalinkPermalinkSystematic structure-property relationships in polymeric coatings / Rudolph D. Deanin in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXIV (Année 1989)
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PermalinkA systematic study on the role of chilling temperatures on the curing efficacy of hides and skins / Chandra Babu Narasimhan Kannan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 11 (11/2012)
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PermalinkTackling deforestation in the Amazon biome / Abigail Clare in INTERNATIONAL LEATHER MAKER (ILM), N° 53 (05-06/2022)
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PermalinkTailor-made biomaterials from collagenic wastes in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 5 (05/2011)
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PermalinkTambaqui (Colossoma macropomum) leather tanning : a study on the influence of skin morphology on the physical-mechanical properties of leather / Jessica Valéria Campos in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 2 (02/2024)
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PermalinkPermalinkPermalinkTannery effluent and reedbeds : working with nature / Richard Daniels in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CII, N° 8 (08/2007)
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PermalinkPermalinkTannery effluent problems / K. W. Pepper in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXI (Année 1966)
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PermalinkTannery effluent treatment updates / Karl Flowers in INTERNATIONAL LEATHER MAKER (ILM), N° 62 (11-12/2023)
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PermalinkPermalinkTannery wastewater treatment : conventional and promising processes, an updated 20-year review / Jun Zhao in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 4 (Année 2022)
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PermalinkTanning capacity of Tessmannia burttii extracts : the potential eco-friendly tanning agents for the leather industry / Cecilia R. China in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)
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PermalinkPermalinkTannins of the testa of anacardium occidentale (cashew) and husk of arachis hypogaea (groundnut) : characterization and potential applications / P. O. Ukoha in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CV, N° 7 (07/2010)
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PermalinkTassin : gainerie, dorure d'art et cuir de Cordoue / Garance André in LEATHER FASHION DESIGN (LFD), N° 2 (06/2019)
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PermalinkTCMTB binding and antifungal activity in wet-blue leather / W. M. Fowler in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 74, N° 4 (07-08/1990)
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PermalinkTechnical and technological constraints facing Tanzania leather value chain : a snapshot of intervention measures / Cecilia Rolence China in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 4 (Année 2022)
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PermalinkTechnical differences between U.S. and european automotive leathers / Mike Tomkin in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. C, N° 4 (04/2005)
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PermalinkTechnical note on the practical application of novo dewooling enzyme N° 1 / J. R. Yates in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 57 (Année 1973)
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PermalinkPermalinkLa technique du cuir à travers les âges / Ludiwigshafen am Rhein [Germany] : BASF (nd)
PermalinkPermalinkTechniques for finishing leather : make shoes and leather goods stand out / Fernando Walter in INTERNATIONAL LEATHER MAKER (ILM), N° 42 (07-08/2020)
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PermalinkTechnological value of hides of crossbreeds from black-and-white cows with bulls of piemontese, chianina and marchigiana breeds / Piotr Zapletal in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 81, N° 6 (11-12/1997)
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