Dépouillements

The leather trades' engineers of Massachusetts : Vaughn Machine Co. 1892-1904 Vaughn-Rood Machine Co. 1903-1905 / Trevor Lyons in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 6 (11-12/2018)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 6 (11-12/2018) . - p. 273-282 Titre : The leather trades' engineers of Massachusetts : Vaughn Machine Co. 1892-1904 Vaughn-Rood Machine Co. 1903-1905 Type de document : texte imprimé Auteurs : Trevor Lyons, Auteur Année de publication : 2018 Article en page(s) : p. 273-282 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Appareils et matériels -- Histoire Tannage -- Appareils et matériels Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The rise of a specific rival to the Vaughn Machine Co. is considered along with major changes in management at the internationally important leather trade engineer, based in Peabody, Massachusetts (MA), United States. By emphasising the essential role of George C. Vaughn in tanning machinery development, it establishes why a new contender - the Vaughn-Rood Machine Co., became a major challenger. It also reflects on the interesting account of how wrangles in the US Courts resulted in the transfer of patents and machinery designs, from the Vaughn Machine Co., to the Turner Tanning Machinery Co. Survival of the old established Vaughn business demanded a change from leather trade machinery into the expanding automotive sector. For a time this seemed to fill the void for the engineering concern. Demise however, soon followed. Subsequent to the brief history of the Vaughn-Rood Machine Co., the paper concludes with the agreed takeover of this business, also by the Turner Tanning Machine Co., and some of the later entreprises pursued by George C. Vaughn. Note de contenu : - Competition and rivalry - Continued growth then a setback at Vaughn Machine Co. - A new president of the Vaughn Machine Co. - Progress at turner tanning machinery Co. - A new leather trade engineer - the Vaughn-Rood Machine Co. - Vaughn Machine Co. - 'The standard of the world' - Turner succeeds in the courts - New markets for the Vaughn Machine Co. - The Vaughn Machine Co. becomes the corwin manufacturing Co. - Consolidation En ligne : https://drive.google.com/file/d/1CgtWjeWmAsc0YCfreLKgpBSA6nSpeQDl/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31311 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
20391	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Mechanism of vegetable extracts on preventing the oxidation of chrome(III) / Ma Xingyuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 6 (11-12/2018)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 6 (11-12/2018) . - p. 283-288 Titre : Mechanism of vegetable extracts on preventing the oxidation of chrome(III) Type de document : texte imprimé Auteurs : Ma Xingyuan, Auteur ; Yu Congzheng, Auteur ; Wang Rui, Auteur ; Ma Xiaopeng, Auteur Année de publication : 2018 Article en page(s) : p. 283-288 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antioxydants Chrome trivalent Evaluation Hydrolyse Ligands Phénoliques, Acides Un acide-phénol (ou acide phénolique) est un composé organique possédant au moins une fonction carboxylique et un hydroxyle phénolique. La pratique courante en phytochimie consiste à réserver ce terme aux dérivés de l’acide benzoïque et de l’acide cinnamique. Les acides hydroxybenzoïques dérivent par hydroxylation de l’acide benzoïque avec une structure de base de type C6-C1. Ces hydroxyles phénoliques OH peuvent ensuite être méthylés. Exemples : l'acide gallique, élément constitutif des tanins hydroxylables et l'acide vanillique dont l'aldéhyde, la vanilline, est bien connue comme l'arôme naturel de vanille. Les dérivés de l'acide cinnamique, les acides hydroxycinnamiques ont une structure de base de type C6-C3. Ils appartiennent à la grande famille des phénylpropanoïdes. Les hydroxyles phénoliques OH de ces dérivés peuvent aussi être méthylés (-O-CH3). Exemples : l'acide paracoumarique, dont les lactones, les coumarines, sont largement distribuées dans tout le règne végétal, l'acide caféique, très large représentation chez les végétaux, souvent sous forme de l'acide chlorogénique (ester avec l'acide quinique), comme dans le grain de café, la pomme ou sous forme d'acide 1,3-dicaféylquinique (cynarine) dans l'artichaut et d'acide rosmarinique dans le romarin et le thé de Java (orthosiphon), l'acide férulique et l'acide sinapique. Dans les plantes, ces acides-phénols sont souvent sous forme d'esters d'alcools aliphatiques ou d'esters de l'acide quinique, de l'acide rosmarinique ou de glycosides. Tanins végétaux Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : To explore the mechanism whereby hydrosable tannins and the monomers hydrolysed from hydrosable tannins in preventing Cr(III) from oxidising into Cr(VI), we selected Valonia, Tara, plus monomers including gallic acid and ellagic acid as test samples to evaluate their complexing ability, reducibility, antioxidation ability and impact on preventing Cr(III) from oxidising into Cr(VI) as well as the relationship between their abilities and impact. With total phenolic value taken as a measurement basis, we took the equivalent quantity of every material based on its total phenolic value, and tested the effect on the same amount of Cr(III) and with the Folin-phenol method to total the number of the active phenolic groups, then we inferred the binding ability from the phenolic group activity. The complexation ability was determined by measuring the decrease of the phenolic value during a given interval in a system where we mixed every material with chrome powder and found the reducibility by using the absorbency method of K3Fe(CN)6 reduction, and analysed the antioxidation ability by DPPH. These abilities are major influential elements in preventing Cr(III) from oxidising into Cr(VI). The relationship between parameters was discovered. The main results were : generally speaking, that the complexing ability of these materials, in order from great to small, is in the order : ellagic acid, Tara, Valonia and gallic acid, which accords with their abilities to prevent Cr(III) from oxidation into Cr(VI) to a large extent. The reducibility and antioxidation effect of these materials from large to small is in the order : ellagic acid>gallic acid>Tara>Valonia, and this has a positive affect on preventing Cr(III) from oxidation Cr(VI) to quite a large extent. However, the order of reducibility and antioxidation doesn't accord with the order of ability to prevent Cr(III) from oxidising into Cr(VI). Note de contenu : - EXPERIMENTAL PROCEDURE : Determination of total phenolic value of materials to provide the basis for calculation - Evaluation of complexation - EVALUATION OF REDUCIBILITY : Evaluation of antioxidation - Procedure - Evaluation of ability to prevent Cr(III) from oxidising into Cr(VI) - RESULTS AND DISCUSSIONS : The complexing ability of samples - The reducibility of vegetable extracts containing gallic acid and its derivatives - The antioxidation of vegetable extracts - The prevention effect of vegetable extracts to Cr(VI) oxidation En ligne : https://drive.google.com/file/d/1gTZ-l5j3dEyIXQBdOGz-rWqPNtRYhOpq/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31312 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
20391	-	Périodique	Bibliothèque principale	Documentaires	Disponible

The relationship between the organoleptic properties of leather and the aggregate structure of collagen fibres / Ren Bianli in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 6 (11-12/2018)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 6 (11-12/2018) . - p. 289-292 Titre : The relationship between the organoleptic properties of leather and the aggregate structure of collagen fibres Type de document : texte imprimé Auteurs : Ren Bianli, Auteur ; F. Qi, Auteur ; Chai Yuye, Auteur ; Lan Yunjun, Auteur ; Zou Xianglong, Auteur Année de publication : 2018 Article en page(s) : p. 289-292 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Collagène Cuir -- Structure Cuirs et peaux -- Finition Cuirs et peaux -- Propriétés organoleptiques Cuirs et peaux de moutons Distribution et orientation des fibres Retannage Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Sample of chromed sheep leather were prepared to establish the relationship between the organoleptic properties of leather and its structure after being retanned and oiled. The organoleptic properties and structure of them were characterized by stress-stain analysis, SEM and organoleptic test. The relationship was investigated from the point of fibre mobility. The results show that, when fibre bundles become thin and porosity increases, fibre mobility increases, as does softness, but tightness weakens. With the extent of fibre orientation decreasing, thicknessincreases, and smoothness decreases. Fullness is a special parameter related of leather thickness and fibre mobility. As collagen fibres have better motion capability when there is a decrease in the degree of orientation, fullness improves. Note de contenu : - MATERIALS AND METHODS : Materials - Methods - SEM observation - Extent of orientation of the collagen fibres - Organoleptic test - RESULTS AND DISCUSSION : Effects of AR on the leather's organoleptic properties - Effects of AR on collagen fibres' aggregate structure - Analysis of the relationship between the organoleptic properties and the collagen fibres' aggregate structure En ligne : https://drive.google.com/file/d/1fPHIhuT41jQwtelgmcgLpJ7L_V3uWDW_/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31322 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
20391	-	Périodique	Bibliothèque principale	Documentaires	Disponible

The rheological properties of grain leather broiler rabbits / Piotr Zapletal in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 6 (11-12/2018)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 6 (11-12/2018) . - p. 293-297 Titre : The rheological properties of grain leather broiler rabbits Type de document : texte imprimé Auteurs : Piotr Zapletal, Auteur ; Kaja Bierowiec-Widòrek, Auteur ; Jerzy Balejko, Auteur ; Barbara Czerniejewska-Surma, Auteur ; Andrzej Ochrem, Auteur ; Dorota Maj Année de publication : 2018 Article en page(s) : p. 293-297 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chaussures Cuir pleine fleur Cuirs et peaux -- Propriétés organoleptiques Cuirs et peaux de lapins Gants Rhéologie Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The studies examined the rheological properties of broiler rabbit grain leather gloves and shoes and determined whether they had the requirements defined by the standard. The study material included grain leathers of two groups of hybrid rabbits, 24 pieces each: Groupe I: Belgian Giant Gray x Burgundy (BOS x BU), Groupe II: Belgian Giant Gray x White New Zealand (BOS x BNZ). Broilers rabbit leathers were characterised by high values of strenght parameters in static tests. Leather of BNZ x BOS hybrids processed for both gloves and footwear, had higher values of the tested features. However, they did not differ significantly from the results obtained for BOS x BU leathers. The rheological and organoleptic properties of the rabbit broiler leathers tested proved that they can be used not only for gloves, but also for shoe uppers. Note de contenu : - MATERIALS AND METHODS : Methodology of tanning rabbit hides for gloves and footwear - technological operations (calculated of 100kg of raw hides)- - METHODS OF RHEOLOGICAL RESEARCH - Fig. 1 : Sampling positions for strengthtests in accordance with PN-EN ISO 2418: 2005 - Fig. 2 : Holder for penetration test Ø 10 mm (K. Bierowiec-Widorek) - Table 1 : Assessment of organoleptic and rheological properties of broiler rabbitskins for leather gloves - Table 2 : Assessment or organoleptic and rheological properties of broiler rabbit skins for footwear leathers En ligne : https://drive.google.com/file/d/17SQKfoZrK_80wbXxPIkKaYqfrz_DmF-i/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31323 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
20391	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Synthesis of an amphoteric polymer auxiliary agent and its application to chrome-free leather / Luo Jianxun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 6 (11-12/2018)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 6 (11-12/2018) . - p. 298-303 Titre : Synthesis of an amphoteric polymer auxiliary agent and its application to chrome-free leather Type de document : texte imprimé Auteurs : Luo Jianxun, Auteur ; Feng Yanjuan, Auteur Année de publication : 2018 Article en page(s) : p. 298-303 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorption Colorants Composés amphotériques Copolymères 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 chèvres Formulation (Génie chimique) Oxazolidine Poids moléculaires Polymères -- Analyse Polymères -- Synthèse Produits de nourriture du cuir Tanins végétaux Tannage combiné Le tannage combiné se dit des tannages qui allient deux familles ou genre de tannage pour obtenir un résultat additionnant les qualités complémentaires des tannins mis en Å“uvre par exemple Chrome-Végétal ou Chrome-Synthétique Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In order to reduce the disadvantages of chrome tannage, chrome-free tannage was developped by many technologists and tanneries. However, because of the structures and charge of the tanning materials in the chrome-free tannage, the absorption rate of the chrome-free leather for anionic dyestuffs, re-tanning agents and fatliquors is lower than that of the chrome-tanned leather. Therefore, in order to improve the absorptivity of the chrome-free leather for these products, an amphoteric polymer auxiliary agent was synthesized with methyl-acrylic acid, sodium methylallyl sulfonate and dimethyl diallyl ammonium chloride (DMDAAC) by free radical copolymerization using ammonium persulfate at 80°C for 3 hours. The molar ratio of methyl-acrylic acid, sodium methylallyl sulfonate and dimethyl diallyl ammonium chloride was confirmed to be 1.0/0.3/ 1.0. The structure of the amphoteric polymer auxiliary agent was characterized by FTIR, H-NMR, C-NMR. The charge and properties of the solution of the amphoteric polymer auxiliary agent were characterised. Applied results of the amphoteric polymer auxiliary on the absorption of chrome-free leather for dyestuff and fatliquor, show that it has strong auxiliary absorptive capacity and the absorptive rate of dyestuff and fatliquor is more than 96%. Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of the amphoteric polymer auxiliary agents - Application of series of the copolymers and the selection of the synthetic recipe - Molecular weight of the amphoteric polymer auxiliary agent and its structure determination - Test of isoelectric point (pI) of the amphoteric polymer auxiliary agent - Application and the optimum amount of the amphoteric polymer auxiliary agent on goatskin crust tanned by combination tannages - RESULTS AND DISCUSSION : Analysis of the optimised formulation of the copolymer - Analysis of the molecular weight and the structure optimised formulation of the copolymer and its characteristics - Table 1 : Parameters of orthogonal experiment - Table 2 : Formulation of Lg(3 4 copolymer reaction with methyacrylic acid, dimethyl diallyl ammonium chloride, sodium methylallyl sulfonate - Table 3 : The process of dyeing of the goatskin leather tanned by combination tannages with vegetable tannins and oxazolidine - Table 4 : The process of fatliquor of the goatskin leather tanned by combination tannages with vegetable tannins and oxazolidine - Table 5 : Results of Lg(3 4 copolymer reaction and application - Table 6 : Relation between the band and the relevant group of APAA - Table 7 : Relation between the band and the relevant group of APAA - Table 8 : Relation between the band and the relevant group of APAA - Fig. 1 : The synthesis of the amphoteric polymer auxiliary agent - Fig. 2 : Curve of GPC of APAA - Fig. 3 : IR spectrum of APAA - Fig. 4 : 1H-NMR of APAA - Fig. 5 : 13C-NMR of APAA - Fig. 6 : relation between zeta potential and pH of APAA - Fig. 7 : Relationship of the uptake of dyestuff and absorptive rate of fatliquor during the dyeing and fatliquoring of the goatskin crust tanned by combination tannage with vegetable tannins and aluminium tanning agent and the dosage of APAA - Fig. 8 : Relationship of the uptake of dyestuff and absorptive rate of fatliquor during the dying and fatliquoring of the goatskin crust tanned by combination tannage with vegetable tannins oxazolidine and the dosage of APAA En ligne : https://drive.google.com/file/d/1BiwvJszgvFJ3WgL2uSOk6h_DBCwO-A9M/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31324 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
20391	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Development of reference materials for inorganic elements in leather powder / Qian Wang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 6 (11-12/2018)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 6 (11-12/2018) . - p. 304-311 Titre : Development of reference materials for inorganic elements in leather powder Type de document : texte imprimé Auteurs : Qian Wang, Auteur ; Chao Wei, Auteur ; Liandi Ma, Auteur Année de publication : 2018 Article en page(s) : p. 304-311 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse spectrale Chimie analytique Composés inorganiques Cuirs et peaux -- Analyse Poudre de cuir Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Three reference materials for As, Cd, Co, Cu, Hg, Ni, Pb and Sb - 8 inorganic elements in leather powder were developed with relatively low, middle and high concentrations. The reference materials were prepared by adding an appropriate concentration using industrial process. The concentration range of the three levels is within the +/- 200% of the limited value in the China statute Safety Technical Specifications for Children's Footwear (GB 30585-2014). By using 16 units with duplicate analysis, it was shown that the samples were enough to demonstrate the homogeneity of these candidate reference materials. The statistical results from the stability test, also showed no significant trends in both short-term stability test for one week at 40°C and long-term stability test for 23 months. This set of reference materials, were used for more than two certification methods - including isotope dilution inductively coupled plasma mass spectrometry (ID-ICP-MS), inductively coupled plasma mass spectroscopy (ICP-MS) and inductively coupled plasma optical emission spectroscopy (ICP-OES). The combined relatively standard uncertainties of the reference values were estimated by considering the uncertainties of the analytical methods, homogeneity and stability. The range of the expanded uncertainties of all the elements is from 3% to 5%. The certified reference materials (CRMs) are primarily intended for use in the calibration and validation of procedures for the determination of inorganic elements in leather or similar leather samples. Note de contenu : - Instrumentation - Reagents and standards - Preparation of candidate materials - Homogenity - Stability monitoring - Moisture content correction - Measurement methods for certified values and relative uncertainty - ID-ICP-MS (Cd, Cu, Hg, Ni, Pb, Sb) - ICP-MS (8 elements) - ICP-OES (8 elements) - Determination of standard values - Uncertainty evaluation - Uncertainty (uc) due to characterisation process - The combined standard uncertainty - Expanded uncertainty En ligne : https://drive.google.com/file/d/1iIR1yv69vTVvjgM16Zbw4-JT5X3dSASE/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31336 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
20391	-	Périodique	Bibliothèque principale	Documentaires	Disponible