Heterogeneous interaction between sulpho-syntans and collagen, part 6 / Z. Korenek in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 76, N° 3 (05-06/1992)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 76, N° 3 (05-06/1992) . - p. 75-82 Titre : Heterogeneous interaction between sulpho-syntans and collagen, part 6 : Influence of reaction conditions and sulpho-syntan oligoelectrolyte molecular parameters Type de document : texte imprimé Auteurs : Z. Korenek, Auteur ; M. Vondruska, Auteur ; J. Mikulik, Auteur ; Z. Vinklàrek, Auteur Année de publication : 1992 Article en page(s) : p. 75-82 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Recently described PELC stoichiometry has been verified for the reaction between collagen fibres (BAT) and oligoelectrolytes (OEL) and its dependence on reaction conditions, structural and molecular parameters of OEL. It has been found that within a certain region of reaction conditions there occurs a stabilization of the chemical composition of the resultant compound for each of the OEL studied which correspond to stoichiometric polyelectrolyte complex of the pendent-pendent type. As has been shown by measuring the shrinkage temperature of tanned BAT samples their hydrothermal stability rises with the increasing level of irreversibly bound OEL up to the point of formation of a stoichiometric PELC ; hydrothermal stability does not change further with increases in bound OEL above this point (stoichiometry). Further, it has been found that, unlike stoichiometry, hydrothermal stability is significantly dependent on the structural and molecular parameters of the OEL. En ligne : https://drive.google.com/file/d/1jfYGfGk3FUNQ-qTmjjnrrrbLaLk0cPCh/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8609 [article]

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Sulpho-syntan tannage technology on line : basic liquor-acid liquor / M. Vondruska in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 78, N° 1 (01-02/1994)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 78, N° 1 (01-02/1994) . - p. 12-15 Titre : Sulpho-syntan tannage technology on line : basic liquor-acid liquor Type de document : texte imprimé Auteurs : M. Vondruska, Auteur ; J. Mikulik, Auteur ; Z. Vinklàrek, Auteur Année de publication : 1994 Article en page(s) : p. 12-15 Note générale : Bibiogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this study the new technology of an ultra-rapid sulpho-syntan tannage consisting of the successive action of a basic and then an acid liquor without pre-tanning, has been experimentally investigated. Results obtained on laboratory models have shown that this technology leads to a significant reduction in the total tanning time needed for properly tanned leathers having a satisfactory hydrothermal stability and a smooth grain. The tanning liquors (both basic and acid) are recycled after simple adjustment of parameters, this is taker as being necessary because of ecological pressures. En ligne : https://drive.google.com/file/d/19nu23bb6JLm3AcaoD8S514MqKbREIZsL/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8394 [article]

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