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675 : Technologie du cuir et de la fourrure |
Ouvrages de la bibliothèque en indexation 675
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A study on cost accounting in garment leather manufacturing / E. Yigit in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 2 (03-04/2006)
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Titre : A study on cost accounting in garment leather manufacturing Type de document : texte imprimé Auteurs : E. Yigit, Auteur ; B. O. Bitlisli, Auteur ; E. Teker, Auteur ; Bahri Basaran, Auteur ; Huseyin Ata Karavana, Auteur Année de publication : 2006 Article en page(s) : p. 68-72 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Comptabilité analytique
Coût de production
Vêtements en cuirIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this study, actual annual production figures of a tannery processing sheepskins for garments in the Menemen Organized Leather Industrial Region of Izmir, Turkey were examined so as to establish production costs and determine unit costs. A cost distribution table was formed using the actual figures obtained from the tannery and units costs were then determined. It was found that total actual costs comprised 66.1% skins, 19.6% chemical substances, 5.4% labour and 6.03% general production expenses. Note de contenu : - Cost items
- Material costs
- Labour Costs
- General Production Costs
- Distribution of Unit Costs and General Expenses
- Country-wise variations in costs
- Table 1 : Cost distribution (US$)
- Table 2 : Ratios of material expenses
- Table 3 : Ratios of labour expenses
- Table 4 : Ratios of general production expensesEn ligne : https://drive.google.com/file/d/1X4F7w4Hg_OZLCLb2tk_wkSRj-ZehusoG/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39159
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 90, N° 2 (03-04/2006) . - p. 68-72[article]Study on interaction mechanism between neutral salts and collagen by combining experiments with molecular dynamics simulation / Min Gu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 7 (07/2023)
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Titre : Study on interaction mechanism between neutral salts and collagen by combining experiments with molecular dynamics simulation Type de document : texte imprimé Auteurs : Min Gu, Auteur ; Xiaoxia Zhang, Auteur ; Yuanzhi Zhang, Auteur ; Songcheng Xu, Auteur ; Guoying Li, Auteur Année de publication : 2023 Article en page(s) : p. 271-281 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chlorure de calcium
Chlorure de sodiumLe chlorure de sodium est un composé chimique de formule NaCl. On l'appelle plus communément sel de table ou de cuisine, ou tout simplement sel dans le langage courant. C'est le principal produit dissous dans l'eau de mer ; on l'appelle alors sel marin.
On l'obtient : dans des marais salants par évaporation de l'eau de mer, dans des mines, par extraction du sel gemme (halite) ou en le synthétisant lors de réactions à hautes températures entre du dichlore (Cl2) et du sodium métallique (Na).
Le chlorure de sodium est utilisé dans l'industrie chimique pour produire du chlore, de la soude caustique et de l’hydrogène.
Collagène
Collagène -- Analyse
Dynamique moléculaire
Lumière -- Diffusion
Microscopie à force atomique
Potentiel zeta
Simulation, Méthode de
Solutions (chimie)
Spectroscopie de fluorescence
Sulfate de sodiumLe sulfate de sodium est un composé chimique courant formé d'un ion sulfate et de deux ions sodium. Lorsqu'il est anhydre, il prend l'apparence d'un solide cristallin blanc de formule chimique Na2SO4. La forme déca-hydratée, Na2SO4·10H2O, est connue sous le nom de sel de Glauber ou mirabilite. Parmi un grand nombre d'usages différents, les principales utilisations du sulfate de sodium concernent la fabrication des détergents et dans le procédé de Kraft de traitement de la pâte à papier. La moitié environ de la production mondiale provient de l'extraction de la forme naturelle décahydratée, et l'autre moitié de productions secondaires dans des procédés de l'industrie chimique.Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The effect of salt on the collagen of hide/skin is of great significance in leather-making. However, the interaction between neutral salts and collagen has not been clear, since the microscopic interaction is hard to be observed directly from the macro level of hide/skin collagen. In this study, the collagen solutions in the typical neutral salts (NaCl, CaCl2, and Na2SO4) systems were used to explore the interaction mechanism between neutral salts and collagen via combining experiments with molecular dynamics (MD) simulation. The results of fluorescence measurements of pyrene, dynamic light scattering, atomic force microscopy, and isoelectric point suggested that the variation of the interaction between different neutral salts and collagen was accompanied with the changes in physicochemical properties of collagen. MD simulation further revealed more detailed information on the interaction mechanism between neutral salts and collagen at the molecular level. The computational results of non-bond energy of the collagen-salt model boxes indicated that the electrostatic interactions of different salts with collagen molecules had the order of CaCl2> Na2SO4> NaCl. The analyses of the visualized conformation and the radial distribution functions showed that CaCl2 with Ca2+ as contributing ion tended to form intramolecular salt bridges with collagen, while Na2SO4 with SO42-as contributing ion more likely formed salt bridges between collagen molecules in the shape of agglomerates. In contrast, NaCl with Cl-as contributing ion was scattered around the collagen models, and its effect on collagen was much smaller. The study elaborated the interaction mechanism of typical neutral salts and collagen to be helpful for further understanding and improving the use of neutral salts in many steps involved in leather production. Note de contenu : - MATERIALS AND METHODS : Materials - Preparation of collagen solutions with salts - Measurments of pyrene fluorescence spectra - Measurements of dynamic light scattering - Atomic force microscope measurements - Measurements of zeta potential - Construction of collagen model and simulation boxes - Molecular dynamics simulation
- RESULTS AND DISCUSSION : Pyrene fluorescence spectra analysis - Dynamic Light Scattering (DLS) analysis - Atomic Force macroscopic (AFM) images - Zeta potential analysis - Non-bond energy analysis in different salt systems - Interactions between collagen and salts by conformation analysis - Radial distribution function analysis
- Table 1 : The I1/I3 Ratio values of pyrene in 0.5 mg/mL collagen solutions containing 0–200 mM salts (NaCl, CaCl2 and Na2SO4) and the CAC values of collagen in 0 mM and 80 mM salts
- Table 2 : Non-bond energies (kcal/mol) of collagen model in [pure col] system and different salt systemsDOI : https://doi.org/10.34314/jalca.v118i7.7855 En ligne : https://drive.google.com/file/d/1F9oD_1lM1fCPfmu-6WzHTCWXnEWjEzmt/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39661
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVIII, N° 7 (07/2023) . - p. 271-281[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24133 - Périodique Bibliothèque principale Documentaires Disponible Study on moisture permeability and microscopic analysis of two kinds of coated thin sheep leather / Zhong Anhua in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 5 (09-10/2022)
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Titre : Study on moisture permeability and microscopic analysis of two kinds of coated thin sheep leather Type de document : texte imprimé Auteurs : Zhong Anhua, Auteur ; Fang Songchun, Auteur ; Huang Zhuo, Auteur Année de publication : 2022 Article en page(s) : p. 215-217 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : acrylique, Acide L'acide acrylique ou acide acroléïque ou acide prop-2-énoïque est un composé organique de formule brute C3H4O2 et de formule semi-développée CH2=CHCOOH. C'est un acide carboxylique et un alcène vinylique, et se présente comme un liquide incolore à l'odeur âcre.
L'acide acrylique et ses esters, les acrylates, sont utilisés dans la fabrication de matières plastiques, dans les peintures acryliques et dans divers autres polyacryliques qui ont de multiples usages.
Cuirs et peaux -- Analyse
Cuirs et peaux de moutons
Humidité
Microscopie
Perméabilité
PolyuréthanesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : This paper focuses on the differences in moisture permeability of two types of coated thin sheep leather. Based on the macroscopic experimental data, the changes of moisture permeability of two kinds of coated thin sheep leather with time were analysed. Combined with molecular dynamics simulation, the reasons for the difference of moisture permeability between the two kinds of leather are analysed from the microscopic point of view : It was found that at 40°C, 1CGD bound to acrylic acid had a smaller inter atomic distance (Dis), larger Radial Distribution Function (RDF) and more hydrogen bonds than polyurethane, resulting in greater intermolecular forces, smaller molecular gaps and less moisture permeability. Note de contenu : - EXPERIMENTAL INSTRUMENTS AND MATERIALS
- MOLECULAR DYNAMICS SIMULATION : Design of simulation experiment - Relevant parameters and their calculation
- RESULTS AND DISCUSSION : Change in moisture permeability over time for two coatings of thin sheep leather - Analysis of Dis - Analysis of RDF - Analysis of hydrogen bondsEn ligne : https://drive.google.com/file/d/1HqbAR3rIVaDhUh-S3imkp_p7vCkHcZBi/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38196
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 106, N° 5 (09-10/2022) . - p. 215-217[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23641 - Périodique Bibliothèque principale Documentaires Disponible Study on a new gypsum retarder from finished leather waste / Minggao Deng in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 3 (05-06/2022)
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Titre : Study on a new gypsum retarder from finished leather waste Type de document : texte imprimé Auteurs : Minggao Deng, Auteur ; Xiaoliang Ding, Auteur ; Zhihua Shan, Auteur Année de publication : 2022 Article en page(s) : p. 106-111 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Cuir -- Déchets
Cuirs et peaux -- Détérioration
Déchets industriels -- Elimination
Gypse
HydratationIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The disposal of finished leather waste (FLW) has always been a concern of the tanning industry. In this paper, the finished leather degradation solution (LDS) was obtained from the alkali-heat degradation of FLW at an 84.4% extraction rate. The solid Collagen Degradation Product (CDP) of LDS contains 47.1mg/kg of chromium. When the LDS was used for gypsum retardation, with the dosage of LDS increased, the setting time of gypsum was gradually prolonged. XRD, TG and FTIR analysis indicated that the hydration reaction of gypsum hemihydrate was inhibited after adding LDS. SEM observation showed that the crystal morphology of gypsum dihydrate changed from needle-like to columnar when the 1 mL 25% LDS was introduced. This study not only indicated that LDS obtained from FLW can be a new material for gypsum retardation but also provided a new way to deal with finished leather waste. Note de contenu : - EXPERIMENTAL PROCEDURES : Experimental materials - Preparation of LDS - Characteristisation of LDS - Characterisation of gypsum hydration process - Characterisation of hydrated gypsum
- RESULTS AND DISCUSSION : Basic features of LDS - Analysis of hydratin process - Analysis of hydrated gypsum
- Table : Basic features of LDSEn ligne : https://drive.google.com/file/d/1fGzFnXVeBRes_MBdainllxzuWM_0T3CU/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37753
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 106, N° 3 (05-06/2022) . - p. 106-111[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23467 - Périodique Bibliothèque principale Documentaires Disponible Study on possibility of oil migration according to fatliquoring agent characteristics / Jae-Hyung Park in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 5 (09-10/2018)
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Titre : Study on possibility of oil migration according to fatliquoring agent characteristics Type de document : texte imprimé Auteurs : Jae-Hyung Park, Auteur ; Young-Woo Kim, Auteur ; Won Ju Kim, Auteur ; In-Kye Paik, Auteur ; Eun-Ji Kim, Auteur ; Hyun-Dae Cho, Auteur ; Hyung-Joon Youn, Auteur ; Han-Do Kim, Auteur ; Eun-Chul Shin, Auteur Année de publication : 2018 Article en page(s) : p. 247-250 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir dans les automobiles
Cuirs et peaux -- Analyse
Cuirs et peaux -- Détérioration
Fourier, Spectroscopie infrarouge à transformée de
Huiles et graisses
Hydrolyse
Produits chimiques -- Migration
Produits de nourriture du cuir
Réflexion totale atténuéeIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The natural leather used for car interior materials is a traditional and high-quality material that can be applied to diverse purposes such as the steering wheel, knob, seat and internal trim. However, continuous friction and sweat from the driver causes the hydrolysis of high-molecular resins and the painted surfaces weakened under the high-temperature conditions of the car interior often lead to slipperiness and increased lustre owning to the migration of the fatliquoring agent. Thus, this study investigated the bonding between the leather and different types of fatliquoring agent, and their influence on oil migration by facilitating ageing (hydrolisis). The results revealed that the silicon- and lecithin-based fatliquoring agents had a significant influence on oil migration owning to the low bonding to the leather under the ageing condition. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials and apparatus - Process of leather manufacturing and measuring of physical properties
- RESULTS AND DISCUSSION : Fat content in leather - Oil migration after hydrolisis - Attenuated total reflection-Fourier transform infrared characterisation of oil migration
- Table 1 : Characteristics of fatliquoring agent
- Table 2 : Process for fatliquoring with chrome-tanned steer hide leather
- Table 3 : Extraction solvents of fat in leather
- Table 4 : Oil contents of leather sample treatment with fatliquoring agent according to extraction solvents
- Table 5 : The results of monitoring of the oil migration on each specimen
- Table 6 : Oil absorption film after oil migration
- Table 7 : Main component of migration oilEn ligne : https://drive.google.com/file/d/1R2nzOqKwZm8GXwa9AsqB8OCMZcyvdHUp/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31108
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 5 (09-10/2018) . - p. 247-250[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20281 - Périodique Bibliothèque principale Documentaires Disponible Study on reutilization of wet-blue leather wastes for the production of regenerated leather composite / Cheng Qian in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 11 (11/2014)
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PermalinkStudy on the crosslinking modification of collagen-based materials by DMTMM in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 5 (05/2023)
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PermalinkStudy on the degreasing of sheep skin using subcritical fluid extraction / Qiao Xia in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 2 (02/2021)
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PermalinkStudy on the degreasing of sheepskin by subcritical CH2Cl2 / Shanshan Yu in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 2 (03-04/2021)
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PermalinkStudy on the dry-cleaning process of mink fur Based on subcritical solvent / Yingxuan Wang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 9 (09/2021)
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PermalinkStudy on the improvement of leather air permeability with WPU adhesive based on gelatin grafting / Ma Di in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 104, N° 4 (07-08/2020)
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PermalinkA study on the reliability on UNI EN ISO 17075 method for the determination of the Cr(VI) content in leather / Alberto Ballardin in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 12 (12/2013)
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PermalinkStudy on the stress-relaxation behaviour of nappa upper pig leather / Keyong Tang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 6 (11-12/2008)
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PermalinkSubstances potentiellement présentes dans les cuirs / Jean-Claude Cannot in CTC ENTREPRISES, (04/2010)
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PermalinkSubstances potentiellement présentes dans divers matériaux / Jean-Claude Cannot in CTC ENTREPRISES, (07-08/2010)
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PermalinkPermalinkSuccessful use of remnant : attractive reversible grain pattern / Murali Sathish in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 1 (01/2017)
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PermalinkSuitability of different oils for chamois leather manufacture / K. V. Sandhya in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CX, N° 7 (07/2015)
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PermalinkSuitability of pore measurement methods for characterizing the hierarchical pore structure of leather / Xiu He in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 2 (02/2019)
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PermalinkSulfitation of animal bone fat for use as a fatliquor / A. M. Ola in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 98, N° 5 (09-10/2014)
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