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Preparation and characterization of nano-reinforced leather waste fiber-epoxy nano composite / Venkatasubramanian Sivakumar in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 12 (12/2015)
[article]
Titre : Preparation and characterization of nano-reinforced leather waste fiber-epoxy nano composite Type de document : texte imprimé Auteurs : Venkatasubramanian Sivakumar, Auteur ; T. R. Swathi, Auteur ; Resmi Mohan, Auteur ; Asit Baran Mandal, Auteur Année de publication : 2015 Article en page(s) : p. 401-408 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Composites à fibres
Cuirs et peaux -- Déchets -- Recyclage
Dioxyde de titane
Epoxydes
Fibres animales
Nanoparticules
Résistance chimique
solvants
Stabilité thermiqueIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Significant quantities of leather waste fibers are generated from the leather industry. Confinement and utilization of leather waste fibers by converting them in to useful materials such as nano-composites is desirable. Earlier studies on making composites from leather waste fibers suffer from strength properties for different applications. In this paper, preparation and characterization of nano composite from leather fiber–epoxy polymer reinforced with nano TiO2 has been studied and reported for the first time. Physical testing of these nano composites shows better strength and other properties for improved performance as versatile material. TGA and DSC studies revealed better thermal stability (up to 330°C) for these nano composites. FTIR analysis shows possible chemical interaction between epoxy polymer and leather fiber. Better solvent resistant property was also noticed for the nano-composites prepared. SEM analysis indicates uniform nano-composite structure and distribution of nano TiO2 in the matrix. The present approach not only offers a solution to the disposal problem regarding leather solid wastes like buffing dusts, but also offers a versatile nano composite material. Note de contenu : - INTRODUCTION : Nano-composites using leather waste fibers - Literature survey on composites from leather wastes - Drawbacks of earlier processes/products - Objectives of the present work
- EXPERIMENTAL : Materials - Preparation of nano-composite from buffing dust - Testing of nano-composites from buffing dust - Scanning electron microscopic (SEM) analysis
- RESULTS AND DISCUSSIONS : Nano-composite utilizing leather waste fiber and epoxy - Hardness test - Tensile strength - Thermogravimetric analysis (TGA) - Differential scanning calorimetry (DSC) - Fourier Transform Infrared Spectroscopy (FT-IR) - Chemical resistance test - Scanning electron microscopic (SEM) analysisEn ligne : https://drive.google.com/file/d/1GY7pvH70zUbI01gMsveF5Zny_FPRn_BJ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25050
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Code-barres Cote Support Localisation Section Disponibilité 17652 - Périodique Bibliothèque principale Documentaires Disponible Preparation of amino-terminated hyperbranched buffing dust and its adsorption property towards acid fuchsin : Use of an industry by-product to adsorb dyestuffs / Jie Liu in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 1 (01-02/2021)
[article]
Titre : Preparation of amino-terminated hyperbranched buffing dust and its adsorption property towards acid fuchsin : Use of an industry by-product to adsorb dyestuffs Type de document : texte imprimé Auteurs : Jie Liu, Auteur ; Zhang Feifei, Auteur ; Yinghu Song, Auteur ; Zhendi An, Auteur ; Yanchun Li, Auteur Année de publication : 2021 Article en page(s) : p. 31-40 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse quantitative (chimie)
Caractérisation
Colorants -- Adsorption
Cuirs et peaux -- Déchets -- Recyclage
Eaux usées -- Epuration
Electrostatique
Fuchsine, Acide
Isotherme d'adsorption
Poids moléculaires
Polymères ramifiés
Poussière de cuirIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Buffing dust (BD) is generated in the buffing process of leather making. Amino-terminated hyperbranched polymer (HBPN) was used to modify the BD to prepare hyperbranched polymer modified BD (HBPN-B). The molecular weight of HBPN was analysed by GPC and FTIR, SEM-EDS and BET analysis were employed to characterise the structure of the HBPN-B. The BET specific surface area of HBPN-B was 7.128m2.g-1. The EDS analysis results show that after modification, the N content of BD increased from 21.23% to 24.47%. HBPN-B was then used in the adsorption of dye from wastewater. The influences of reaction conditions on the adsorption properties of HBPN-B towards acid fuchsin were studied and the adsorption kinetic and isotherm were researched. The removal rate of acid fuchsin by HBPN-B increased with the increase of pH, the removal rate reached the maximum at pH2.5. Electrostatic attraction was the chief adsorption mechanism. The removal rate increased with the increase of HBPN-B dosage and temperature. The adsorption process was in conformity with pseudo-second order kinetic and Langmuir adsorption isotherm model adsorption. Note de contenu : - MATERIALS AND METHODS : Chemicals - Preparation of HBPN-B - The characterisation of HBPN-B - Quantification of acid fuchsin - Batch adsorption experiments - Adsorption kinetic - Adsorption isotherm
- RESULTS AND DISCUSSION : Characterisation of the HBPN-B - Effect of conditions of solution to the adsorption property of HBPN-B - Kinetics adsorption studies - Adsorption isotherm
- Table 1 : GPC analysis result of HBPN
- Table 2 : BET characterisation of biosorbent
- Table 3 : Constants for the kinetic models of acid fuchsin on the HBPN-B
- Table 4 : Isotherm parameters obtained from the fitting to experimental results on the adsorption of acid fuchsin onto the HBPN-BEn ligne : https://drive.google.com/file/d/1HBFOgdQ3CcXaP5KEwrSo-QjLF-JlWCTB/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35315
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 105, N° 1 (01-02/2021) . - p. 31-40[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22599 - Périodique Bibliothèque principale Documentaires Disponible Preparation of a biomass adhesive based on bamboo and leather shavings / Yiwei Zhang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 104, N° 2 (03-04/2020)
[article]
Titre : Preparation of a biomass adhesive based on bamboo and leather shavings Type de document : texte imprimé Auteurs : Yiwei Zhang, Auteur ; Hongxia Pu, Auteur ; Rui Dai, Auteur ; Zhihua Shan, Auteur Année de publication : 2020 Article en page(s) : p. 90-97 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésifs -- Propriétés mécaniques
Bambous et constituants
Biomasse
Caractérisation
Colles:Adhésifs
Cuirs et peaux -- Déchets -- Recyclage
Déchets végétaux -- Recyclage
Formulation (Génie chimique)
StatistiquesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Bamboo shavings, a waste of bamboo processing, contain many active groups and have excellent potential for the preparation of a biomass adhesive. In this study, under the catalysis of phenol and sulfuric acid, bamboo shavings are subjected to microwave treatment. The bamboo fibres are degraded and liquefied into a solid and liquid mixture (as a native putty of adhesive). The composite adhesive is prepared by mixing degraded collagen (Co) with the degradation mixture and cross-linking with epichlorohydrin.
Some key quality indexes of plywoods such as the bonding strength, the modulus of rupture (MOR) and the modulus of elasticity (MOE) of prepared plywoods meet the quality index requirements of plywood (GB/T 9846-2015, China). Experimental analysis shows that the good bonding properties correlated well with 5-hydroxymethylfurfural (5-HMF) in the bamboo degradation liquid and the Maillard reaction of collagen degradation bonds between the polar groups.Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Liquefaction procedure - Study of the reaction of Co with MCC (microcrystalline cellulose) - Preparation of the composite adhesive - Basic properties testing of the BSL-co adhesive - Preparation of the plywood - Bonding strength tests - Mechanical properties tests
- CHARACTERISATIONS : Fourier transform infrared (FTIR) spectroscopy - Scanning electron microscopy (SEM) analysis - Energy dispersive spectrometer (EDS) analysis
- STATISTICAL ANALYSIS
- RESULTS AND DISCUSSION : Effect of liquefaction conditions on the liquefaction conditions on the liquefaction rate of bamboo shavings - FTIR analysis of Co-MCC - Basic properties and mechanical properties of the adhesives - SEM analysisEn ligne : https://drive.google.com/file/d/1ThgE46qkIcM2F3E1LbfCZMk2tR-kbErk/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33914
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 104, N° 2 (03-04/2020) . - p. 90-97[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21654 - Périodique Bibliothèque principale Documentaires Disponible Preparations of nonwoven and green composites from collagen fibrous networks in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 2 (02/2014)
[article]
Titre : Preparations of nonwoven and green composites from collagen fibrous networks Type de document : texte imprimé Année de publication : 2014 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Déchets -- Recyclage
Emission acoustique
Fibrilles de collagèneLa fibrille de collagène est une structure constituée d'un assemblage de fibres de tropocollagène (assemblage de 3 protéines de collagène alpha (alpha 1 - alpha 1 - alpha 2) en une hélice droite.
Filtres à air
GélatineLa gélatine est une substance solide translucide, transparente ou légèrement jaune, presque sans goût et sans odeur, obtenue par l'ébullition prolongée de tissus conjonctifs (peaux) ou d'os d'animaux (principalement porc, bœuf, poisson). Elle possède de nombreuses applications dans le domaine culinaire, la médecine, les industries agroalimentaire et pharmaceutique.
En matière d’étiquetage, la gélatine est considérée par la norme européenne3 comme un ingrédient et non pas comme un additif, c'est pourquoi elle n'a pas de numéro E. Hors Union européenne, elle est considérée par certains pays comme un additif gélifiant et on peut la trouver avec la dénomination E441.
La gélatine est un mélange de protéines obtenu par hydrolyse partielle du collagène extrait de la peau comme la peau de porc (cochon), des os, des cartilages, etc. Les liaisons moléculaires entre les fibres de collagène sont alors brisées. Mélangée à de l'eau, la gélatine forme un gel colloïdal semi-solide thermo-réversible (il fond lorsqu'il est chauffé et recouvre son aspect gélatineux lorsqu'il est refroidi). Sous forme déshydratée, par contre, la gélatine n'a pas de point de fusion et devient friable ou brûle quand elle est chauffée à trop haute températureLa rhéologie de la gélatine se caractérise par un comportement viscoélastique, et des contraintes trop élevées ou appliquées trop rapidement peuvent entraîner une rupture fragile (fracturation) ou ductile6. Le caractère plutôt élastique/fragile ou plutôt visqueux/ductile dépend de la concentration en gélatine de la solution aqueuse et de la température, ainsi que de la durée de la mise sous contrainteLes acides aminés constituant la gélatine sont : la glycine (21 %), la proline (12 %), l'hydroxyproline (12 %), l'acide glutamique (10 %), l'alanine (9 %), l'arginine (8 %), l'acide aspartique (6 %), la lysine (4 %), la sérine (4 %), la leucine (3 %), la valine, la phénylalanine et la thréonine (2 %), l'isoleucine et l'hydroxylysine (1 %), la méthionine et l'histidine (< 1 %) et la tyrosine (< 0,5 %). Ces valeurs sont variables (surtout pour les constituants minoritaires) et dépendent de la source de matériaux bruts et de la technique de préparation. La gélatine est constituée à environ 98-99 % (en poids sec) de protéines et contient 18 acides aminés dont huit des neuf acides aminés essentiels à l'Homme. Elle n'a qu'une relative valeur nutritionnelle du fait de l'absence de tryptophane et de son déficit en isoleucine, thréonine et méthionine; elle possède également un taux inhabituellement élevé d'acides aminés non essentiels, la glycine et la proline (qui sont produits par le corps humain). (Wikipedia)
Matériaux hybrides
Nontissés
Recyclage (déchets, etc.)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The disposal of solid wastes, such as trimmings and splits generated in various manufacturing processes in a tannery is a serious challenge to the hides and leather industries. Most of these wastes are transported out of processing plants for landfills, not only incurring the expense of transportation but also creating environmental issues. Our effort to address these new challenges is to develop new uses and novel biobased products from solid wastes to improve prospective markets for the hides and leather industries. We hypothesize collagen fiber networks derived from un-tanned hides can be utilized to prepare high performance green composites and air filters, of which both have a great market potential. Collagen fiber networks were obtained from split hides that have been processed to remove the noncollagenous materials through the hair removal, liming, and bating steps. Previous research was devoted to understand the effects of dehydration on the resultant fiber networks and the effects of processing steps such as bating, pickling, and crosslinking treatments on the morphology and physical properties of the fiber networks derived from un-tanned hides, which will be the starting material for constructing air filters and green composites. This study focuses on preparations of nonwoven and green composites derived from fiber networks. Nonwoven sheets were prepared using paper-making technology. They were then used as reinforced components to make composites that use gelatin as the matrix. Mechanical properties were evaluated for the resultant composites ; results showed that the fiber sizes and gelatin content have significant effects on the properties of resultant nonwoven and composites. Note de contenu : - EXPERIMENTAL : Materials and procedures - Composites - Mechanical property evaluations - Acoustic emission (AE) - Microscopic observations
- RESULTS AND DISCUSSION : Mechanical properties of nonwovens - Gelatin properties - Mechanical properties of composites - Acoustic emission studiesEn ligne : https://drive.google.com/file/d/1eJaI00lsxcZaY4dP31q5BPYJILggf2pp/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20441
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Code-barres Cote Support Localisation Section Disponibilité 15975 - Périodique Bibliothèque principale Documentaires Disponible Production of high carbon ferrochromium alloy from footwear leather waste ash through a carbothermic reduction in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 11 (11/2012)
[article]
Titre : Production of high carbon ferrochromium alloy from footwear leather waste ash through a carbothermic reduction Type de document : texte imprimé Année de publication : 2012 Article en page(s) : p. 375-383 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alliage fer-chrome
Carbone
Chrome -- Recyclage
Combustion
Cuirs et peaux -- Déchets -- Recyclage
Energie
Incinération
Oxydes de chrome
ThermodynamiqueIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The majority of hazardous solid waste generated in “Rio Grande do Sul” State, Brazil, is produced from footwear leather industry. Thermal treatment leather waste is considered as a good alternative to deal with this problem, by generating energy. It is also possible to recover chromium from the ash generated during incineration. The aim of this work is to evaluate high carbon ferrochromium alloy production from leather waste ash, through computational and laboratory analysis. Computational thermodynamics was used to simulate ash Cr2O3 carbothermic reduction and to determine composition of the laboratory alloys. Several runs were done using a laboratory furnace at 1600oC to get ferrochromium alloys from the ashes. Different kinds of analyses were done to determine alloys and slags compositions. It was demonstrated that it is possible to use the chromium from leather waste ash for a production of high carbon ferrochromium alloy through carbothermic reduction at 1600oC. The results obtained showed a new opportunity for hazardous solid waste management of the leather industry, in the context of energy generation from combustion of leather waste. The computational thermodynamics simulations presented good agreement with experimental results. Note de contenu : - METHODOLOGY : Materials - Experimental procedure and apparatus - Thermodynamic simulations
- RESULTS AND DISCUSSION : Equipment reproducibility - Chromium - Phosphorus - Sulphur - Silica - Carbon - Other elements - ConversionEn ligne : https://drive.google.com/file/d/1KUS1CjDnYl6rTS_ZbsygJpyL71JCQYd_/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16521
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Code-barres Cote Support Localisation Section Disponibilité 14323 - Périodique Bibliothèque principale Documentaires Disponible Protein retanning and filling agent from vinyl monomer graft modification of chrome shavings hydrolysate / Ma Jianzhong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 1 (01-02/2004)
PermalinkPyrolysis of chromed leather waste shavings in fluidized bed / Taysnara Simioni in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 10 (10/2014)
PermalinkRaw skin wastes - used to prepare a flocculant for the treatment of black liquor for papermaking / Chi Yuanlong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 5 (09-10/2011)
PermalinkReaction of gelatin and chitosan with water soluble carbodiimides / Maryann M. Taylor in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 2 (02/2017)
PermalinkRecovery and characterization of protein hydrolysate from chrome shavings by microbial degradation / C. Shanthi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 6 (06/2013)
PermalinkRecovery and utilisation of waste products from the leather industry / Benias Nyamunda / Saarbrücken [Germany] : Lambert Academic Publishing (2013)
PermalinkRecovery of collagen from phosphonium tanned leather shavings and application as formaldehyde scavenger in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 9 (09/2009)
PermalinkRecycling of raw materials (collagen protein) in the leather industry -high value added application of leather solid waste / Li Chengtao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 5 (09-10/2017)
PermalinkRegenerating leather waste for flexible pressure sensing applications / Jie Lei in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 1 (Année 2019)
PermalinkResearch on the composite and functional characteristics of leather fiber mixed with nitrile rubber / Guo Jun in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)
PermalinkResearch on the trend of development, existing problems and countermeasures of chinese leather industry / Fang Su in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 4 (07-08/2021)
PermalinkResearch progress on resource utilization of leather solid waste / Yanchun Li in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 1 (Année 2019)
PermalinkResource utilisation of solid leather waste : Part 2. A review / Shyamoli Shaw in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 4 (07-08/2022)
PermalinkResource utilisation of solid leather waste - Part I / Shyamoli Shaw in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 3 (05-06/2022)
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