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675 : Technologie du cuir et de la fourrure |
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Preparation of leather-based free-standing electrode and its electrochemical performance / Fei Ma in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 2 (03-04/2021)
[article]
Titre : Preparation of leather-based free-standing electrode and its electrochemical performance Type de document : texte imprimé Auteurs : Fei Ma, Auteur ; Ding Shaolan, Auteur ; Ren Huijun, Auteur ; Ren Jun, Auteur ; Liang Jianfang, Auteur ; yue Wang, Auteur ; Yinghua Ma, Auteur Année de publication : 2021 Article en page(s) : p. 95-104 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Carbone
Cuir
Electrochimie
Electrodes
Energie -- Stockage
Plaques (ingénierie)
Surfaces -- AnalyseIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Based on the high proportion of nitrogen content and natural pore structure of leather, this paper uses discarded leather as a raw material to prepare a nitrogen-doped leather-based free-standing carbon sheet by a high-temperature carbonisation-air activation method. The porous carbon sheets are prepared with a relatively high surface area, and there are some partial micropores and mesopores in the well-interconnected macropores. The results show that the carbon sheets reveal a lower internai resistance in the 6mol L-1 KOH electrolyte used as a supercapacitor electrode. When the current density is 0.5A.g-1, ALCS-300 (Activated Leather Carbon Slices) obtains a specific capacitance of 136.5F.g-1. In addition, it has excellent cycle stability. After 5000 cycles at a current density of 1A.g-1, the specific capacity retention rate is 94.5%. Since it eliminates the need to add any chemical reagents and is low in cost during the carbonisation-activation (air) process, it does not require additional adhesives, conductive agents and current collectors during electrode assembly, which can further simplify the assembly process, so it provides a good alternative to carbon electrodes for energy storage device. Note de contenu : - EXPERIMENTAL PROCEDURES : Experimental materials and reagents - Preparation of N-doped leather-based carbon sheets - Material characterisation - Electrochemical test
- RESULTS AND DISCUSSION : Structure and morphological analyses of leather-based free-standing carbon sheets - Analyses of specific surface area and pore structure of leather-based free-standing carbon sheets - XRD analyses of leather-based free-standing carbon sheet - Raman spectroscopy analyses of leather-based free-standing carbon sheets - X-ray photoelectron spectroscopy analyses of leather-based free-standing carbon sheets - Exploration of the formation mechanism of the pore structures of the leather-based free-standing carbon sheet - Analyses of the electrochemical properties of leather-based freestanding carbon sheets
- Table 1 :Specific surface areas and pore volumes of LCS-900 and ALCS-300
- Table 2 : Elemental analyses of LCS-900 and ALCS-300 samplesEn ligne : https://drive.google.com/file/d/1f3dvuwDee2tn_pizU7434rfxdozGg7aQ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35548
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 105, N° 2 (03-04/2021) . - p. 95-104[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22651 - Périodique Bibliothèque principale Documentaires Disponible Preparation of lignosulfonate reduced chrome tanning agent and its tanning effect / Peng Zhou in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 4 (07-08/2011)
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Titre : Preparation of lignosulfonate reduced chrome tanning agent and its tanning effect Type de document : texte imprimé Auteurs : Peng Zhou, Auteur ; Xuepin Liao, Auteur ; Bi Shi, Auteur Année de publication : 2011 Article en page(s) : p. 158-164 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chrome hexavalent
Lignosulfonate
Réduction (chimie)
Tannage au chrome
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Lignosulfate (LGS) is a major by-product of pulping industry, generated in a huge amount each year. In this research, LGS was used as a reducing agent to reduce Cr (VI) to Cr (III) so that the LGS reduced chrome tanning agent (Cr-LGS) was prepared. It was found that the optimal mass ration of LGS, dichromate and concentrated sulphuric acid was 0.7:1.0:1.0 for the preparation reaction. The LGS was degraded during the reaction while some functional groups, such as carboxyl, were derived. These structural changes in LGS made the Cr-LGS exhibit a satisfactory self-making effect and thus possess good alkali resistance. Tanning experiments indicated that Cr-LGS achieved a high shrinkage temperature for wet-blue (Ts=118°C, Cr2O3 offer=1.5 %). Compared with the leather tanned by commercial chrome tanning agent, the Cr-LGS tanned leather exhibited greater tensile and tear strengths with improved fullness and tightness. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Methods - Characterization of Cr-LGS - Tanning trials and evaluation of wet-blue leather - Scanning electron microscope analysis - Strength determination of crust leather.
-RESULTS AND DISCUSSION : Effect of mass ratio of LGS/dichromate on property of tanning liquor - The change of LGS structure after reaction and its effect on tanning properties - General evaluation of wet-blue leather - Mechanical properties of crust leather.En ligne : https://drive.google.com/file/d/1hcN-Gfz-oLaWfVVfKn7yfbz4IPYv3V-O/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11859
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Code-barres Cote Support Localisation Section Disponibilité 013212 - Périodique Bibliothèque principale Documentaires Disponible Preparation of maleic acid modified peanut shell adsorbent and its adsorption performance for Cr(VI) / Zeng Chunhui in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 6 (11-12/2022)
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Titre : Preparation of maleic acid modified peanut shell adsorbent and its adsorption performance for Cr(VI) Type de document : texte imprimé Auteurs : Zeng Chunhui, Auteur ; Zhang Ye, Auteur ; Feng Hanjun, Auteur ; Qi Lu, Auteur Année de publication : 2022 Article en page(s) : p. 246-251 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorbants et adsorbants
Caractérisation
Chrome hexavalent
Coque d'arachideIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Peanut shell adsorbents prepared by microwave pretreatment and maleic acid modification technology, were used to study the adsorption properties for Cr(VI). Meanwhile, structural characterisation, optimisation of adsorption conditions, isotherm adsorption and adsorption kinetics were critically investigated through experiments and detection techniques. XRD analysis showed that the crystallinity of peanut shells decreased significantly after microwave pretreatment. FTIR analysis testified that carboxyl groups and ester groups were successfully introduced into the structure of maleic acid modified peanut shells (MMPS). The results of orthogonal test and single factor experiments indicated that pH value had the greatest effect on Cr(VI) adsorption process. Moreover, the Cr(VI) adsorption rate (CrAR) reached the maximum value of 99.3 % under the optimal condition (MMPS dosage: 6g, adsorption time: 45 minutes, pH3, adsorption temperature: 80°C, Cr(VI) initial concentration: 30mg/L), which was much higher than that of unmodified peanut shells. The adsorption behaviour conformed to quasi-second-order kinetic equation and Langmuir isothermal adsorption model, and the adsorption was dominated by monolayer. Note de contenu : - EXPERIMENTAL PROCEDURES : Raw materials and instruments - Pretreatement of peanut shells - Preparation of maleic acid modified peanut shell (MMPS) adsorbent - Adsorption tests of Cr(VI) by MMPS - Adsorption kinetics test - Isothermal adsorption test - Characterisation
- RESULTS AND DISCUSSION : XRD analysis - FTIR analysis - Orthogonal experiment results - Influence of pH on Cr(VI) adsorption - Adsorption kinetic model and analysis - Isothermal adsorption model and analysis
- Table 1 : Results and analysis processing of orthogonal experiments
- Table 2 : Kinetic parameters for the adsorption of MMPS on CR(VI)
- Table 3 : Adsorption isothermal parameters of Langmuir and Freundlich modelsEn ligne : https://drive.google.com/file/d/1SjwOX76ma1rIRt9NGce2YIYwaFI6iJGB/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38516
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 106, N° 6 (11-12/2022) . - p. 246-251[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23756 - Périodique Bibliothèque principale Documentaires Disponible Preparation of nanocomposites containing montmorillonite and SiO2 particle for leather tanning agent / Yan Bao in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 12 (12/2012)
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Titre : Preparation of nanocomposites containing montmorillonite and SiO2 particle for leather tanning agent Type de document : texte imprimé Auteurs : Yan Bao, Auteur Année de publication : 2012 Article en page(s) : p. 429-434 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chlorure d'ammonium
Chrome trivalent -- Absorption
Copolymérisation
Diffractométrie de rayons X
Dioxyde de silicium
Fourier, Spectroscopie infrarouge à transformée de
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.
Montmorillonite
Nanoparticules
Polyacide méthacrylique
Polymérisation
Surfactants
TannageIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Nanocomposites containing montmorillonite (layered silicate clay) and SiO2 particle were prepared via in-situ polymerization. The effect of synthesis conditions, such as surfactant and SiO2 content, on the application properties of nanocomposite were investigated in details. Nanocomposite, which used hexadecyl trimethyl ammonium chloride as the surfactant, had the best application properties. The incorporation of SiO2 was favored for improvement of wet-heat resistance temperature of the leather, in contrast to the nanocomposite without SiO2. Nanocomposite facilitate the absorption of chrome. Fourier transform infrared spectroscopy (FT-IR) spectrum demonstrated that methacrylic acid was polymerized in the montmorillonite inter-lamellar and nano-SiO2 was completely copolymerized with methacrylic acid monomers. X-ray diffraction (XRD) results suggested that montmorillonite layers were exfoliated during the polymerization process. Note de contenu : - EXPERIMENTAL : Materials - Preparation, characterization and application of PMAA/MMT/SiO2 nanocomposites
- RESULTS AND DISCUSSION : The mechanism of PMAA/MMT/SiO2 nanocomposite - Effect of surfactants - Effect of SiO2 contents - The application properties of PMAA/MMT/SiO2 nanocomposite - The structure of nanocompositeEn ligne : https://drive.google.com/file/d/1ldRPzC5tEuoFerjhqpR1tHYKVNlerhJv/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16751
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Code-barres Cote Support Localisation Section Disponibilité 14407 - Périodique Bibliothèque principale Documentaires Disponible Preparation 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)
[article]
Titre : Preparation of a new itaconate based amphoteric surfactant for fatliquor applications Type de document : texte imprimé Auteurs : R. Janardhanan, Auteur ; V. Vijayabaskar, Auteur ; B. S. R. Reddy, Auteur Année de publication : 2012 Article en page(s) : p. 231-242 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Produits de nourriture du cuir
Surfactants
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Amphoteric surfactant based fatliquors are outstanding performers in the leather industry because of their excellent surfactant properties, low toxicity, good biodegradability, excellent resistance to hard water, antistatic properties, good emulsification, dispersion and compatibility with other agents. This paper reports on the preparation of a new amphoteric surfactant, diethylamino-lauryl itaconate (DEALI) through the synthesis of lauryl itaconate (LI) based anionic polymerisable surfactant (“Surfmer”). DEALI and LI were characterized by FT-IR and 1H NMR spectra. Properties of both DEALI and LI such as surface tension at different concentrations, critical micelle concentration, contact angle, surface energy, emulsification power, zeta potential and particle sizes were measured. The Isoelectric Point (IEP) of DEALI was determined. The amphoteric surfactant (DEALI) and the anionic surfactant (LI) were formulated as fatliquors and applied on wet blue cow leather, against each other. Fatliquor imparted properties on the leather were measured qualitatively and quantitatively. Scanning Electron Microscopic studies of the resultant leather was carried out and found to have better performance due to deeper penetration of the amphoteric surfactant. This work provides a lead for the development of new and better fatliquoring agents. Note de contenu : - EXPERIMENTAL : Materials - Experimental methods - Characterization methods
- RESULTS AND DISCUSSION : Analytical characterization of surfactants - FTIR characterization - H NMR characterization - Surfactants properties - Analytical characterization of fatliquors - Resultant leather propertiesEn ligne : https://drive.google.com/file/d/1mabHNvYRigD57XdwwziOvbimjetqqoN2/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15643
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Code-barres Cote Support Localisation Section Disponibilité 14063 - Périodique Bibliothèque principale Documentaires Disponible Preparation of organosilicone modified palm oil fatliquor / Chen Wang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 5 (05/2011)
PermalinkPreparation of oxidised polyvinyl alcohol using hydrogen peroxide and its application for collagen modification / Baohua Liu in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 1 (01-02/2019)
PermalinkPreparation of oxidized poly(2-hydroxyethyl acrylate) with multiple aldehyde groups by TEMPO-mediated oxidation for gelatin crosslinking / Baohua Liu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 5 (05/2019)
PermalinkPreparation of wool keratin and application as formaldehyde scavenger for leather products / Zeng Chunhui in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 4 (07-08/2017)
PermalinkLa préparation des peaux de moutons à laine pour l'habillement et d'autres utilisations / B. Martinelli in REVUE TECHNIQUE DES INDUSTRIES DU CUIR, Vol. LXVI (Année 1974)
PermalinkPreparations of nonwoven and green composites from collagen fibrous networks in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 2 (02/2014)
PermalinkPermalinkLe présent et l'avenir des colles polyuréthanes dans l'industrie de la chaussure / A. Navai in TECHNICUIR, N° 7 (09/1971)
PermalinkLa préservation à court terme des peaux / Desmond R. Cooper in REVUE TECHNIQUE DES INDUSTRIES DU CUIR, Vol. LXVI (Année 1974)
PermalinkPreservation of bovine hide using less salt with low concentration of antiseptic, Part I : effectiveness of developed formulations / Majher I. Sarker in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 1 (01/2018)
PermalinkPreservation of bovine hide using less salt with low concentration of antiseptic, Part II : Impact of developed formulations on leather quality and the environment / Majher I. Sarker in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 10 (10/2018)
PermalinkPreservation of cattle hides with potassium chloride / David G. Bailey in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXX, N° 1 (01/1995)
PermalinkPreservation of cattlehides with electron beam irradiation / David G. Bailey in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXIV (Année 1989)
PermalinkPreservation 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)
PermalinkPreservation of hides with sulfite. I. Concentration and application effects on small-scale experiments with cattlehides / William J. Hopkins in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXX (Année 1975)
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