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Computer modelling of a type-1 collagen fibril in water. 1. model development and validation / Lorenz Siggel in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CI, N° 5 (05/2006)
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Titre : Computer modelling of a type-1 collagen fibril in water. 1. model development and validation Type de document : texte imprimé Auteurs : Lorenz Siggel, Auteur ; Ferenc Molnar, Auteur Année de publication : 2006 Article en page(s) : p. 179-191 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Type-1 collagen is the principle component of hides used to produce leather. The amino acid sequence for calf skin type-1 collagen is known, as well as the macroscopic structure as seen in electron micrographs. However, little is known about the intermediate scale or atomistic level. With our work we have established a state-of-the-art molecular model of a collagen fibril that is large enough to mimic parts of the fibrilar system and provide molecular level detail about the changes in structure and properties due to varying pH or the effect of leather chemicals and dyes. This paper covers the construction and validation of the varying models which evolved in the course of the work. The density and swelling behavior as a function of pH, as well as "pickling" with 12% NaCl was qualitatively reproduced. In both experiment and our simulation, swelling occurs at very high and low pH, but not in the neutral system or the acidic system when 12% NaCl is first added ("pickling"). The mobility of water in the systems of varying pH was studied and show that water is surprisingly mobile in the fibril when compared to diffusion in the bulk. The interaction of side chains in collagen with one another at the differing pH's encountered during tanning was also examined. En ligne : https://drive.google.com/file/d/1RFManXFOvhsibQKvpcACdFhMc0tae4sj/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4012
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CI, N° 5 (05/2006) . - p. 179-191[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 004807 - Périodique Bibliothèque principale Documentaires Disponible Corrosion resistance and dielectric properties of an iron oxide filled epoxy coating / N. Kouloumbi in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 69, N° 870 (07/1997)
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Titre : Corrosion resistance and dielectric properties of an iron oxide filled epoxy coating Type de document : texte imprimé Auteurs : N. Kouloumbi, Auteur ; G. M. Tsangaris, Auteur ; C. Vourvahi, Auteur ; Ferenc Molnar, Auteur Année de publication : 1997 Article en page(s) : p. 53-59 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Matériau revêtement' 'Epoxyde résine' 'Matière charge' 'Fer Oxyde' 'Propriété chimique' électrique' diélectrique' Feuil 'Résistance corrosion' 'Peinture anticorrosion' Index. décimale : 667.9 Revêtements et enduits Résumé : Polymeric composites of a bisphenol-A-epoxy resin and iron oxide filler (15% w/w) were deposited on pretreated steel specimens. The applied coatings had a thickness of 80 μm and 220 μm. The modification of the anticorrosive and dielectric characteristics of these coatings, in a corrosive environment (3.5% NaCl), were monitored by potentiodynamic polarization measurements, electrochemical impedance spectroscopy, and dielectric measurements. Corrosion resistance of composite coatings was found to be somewhat higher than that of unfilled epoxy coatings. Coatings containing iron oxide a exhibited capacitive behavior as revealed by dielectric and EIS measurements. This behavior is more pronounced in high thickness composite coatings. Note de contenu : - EXPERIMENTAL : Materials - Sample preparation - Test instrumentation and conditions
- RESULTS AND DISCUSSION : Corrosion current measurements - Impedance measurements - Dielectric permittivity measurements - Ratings of visible damagePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18262
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 69, N° 870 (07/1997) . - p. 53-59[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003539 - Périodique Bibliothèque principale Documentaires Disponible Leather related collagen modeling : the challenges of modeling hierarchical structures / Lorenz Siggel in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CII, N° 10 (10/2007)
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Titre : Leather related collagen modeling : the challenges of modeling hierarchical structures Type de document : texte imprimé Auteurs : Lorenz Siggel, Auteur ; Rosa E. Bulo, Auteur ; Ferenc Molnar, Auteur ; Horst Weiss, Auteur ; Tilman Taeger, Auteur Année de publication : 2007 Article en page(s) : p. 333-336 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure En ligne : https://drive.google.com/file/d/1jSbABonNRBaBjtvNDzhQtTzkJm3bD6IE/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3328
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CII, N° 10 (10/2007) . - p. 333-336[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 008304 - Périodique Bibliothèque principale Documentaires Disponible Looking beneath the surface / Andrà s Baczoni in EUROPEAN COATINGS JOURNAL (ECJ), N° 01/2010 (01/2010)
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Titre : Looking beneath the surface Type de document : texte imprimé Auteurs : Andràs Baczoni, Auteur ; Janos Liszi, Auteur ; Ferenc Molnar, Auteur Année de publication : 2010 Article en page(s) : p. 33-36 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Polarisation (électricité)
Polymères -- Détérioration
Polymères -- Propriétés
Spectroscopie diélectriqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Measurement technology - A thermodielectric spectroscope was designed and built to determine whether changes in polymer properties could be monitored by changes in their dipole orientation polarisation. Significant differences were detected between different types of binder, and between pure binders and paints based upon them. One potential application is in monitoring polymer degradation. En ligne : https://drive.google.com/file/d/1v4NWcBhQms84_5uAG9pCWLAjXlJkQocK/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8253
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 01/2010 (01/2010) . - p. 33-36[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011858 - Périodique Bibliothèque principale Documentaires Disponible