Synthesis and application of a novel cationic surfactant based on quaternary ammonium salt for leather fatliquoring / Hao Dongyan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 4 (07-08/2019)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 103, N° 4 (07-08/2019) . - p. 183-190 Titre : Synthesis and application of a novel cationic surfactant based on quaternary ammonium salt for leather fatliquoring Type de document : texte imprimé Auteurs : Hao Dongyan, Auteur ; Wang Xuechuan, Auteur ; Li Ji, Auteur ; Sun Siwei, Auteur ; Wang Wanni, Auteur Année de publication : 2019 Article en page(s) : p. 183-190 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorption Alkylammonium quaternaire Caractérisation Composés organiques -- Synthèse Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés physiques Douceur (toucher) Huiles et graisses Huiles et graisses -- Absorption Produits de nourriture du cuir Surfactants Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A fatliquor is an indispensable agent for leather, giving softness, fullness and elasticity. A quaternary ammonium salt cationic surfactant (cetyl-dimethyl-(3-methacrylamide) propyl bromide (DMPC16)) was synthesised from N-(3-dimethylaminopropyl) methacrylamide (DMAPMA) and hexadecane bromide by nucleophilic substitution reaction. The structure and properties of quaternary ammonium cationic surfactant were characterised by FTIR, 1H-NMR, elemental analyser, TGA and surface tension analyser. Further, it was applied in the fatliquoring process of wet-white (Clariant EasyWhiteTan F-90 tanning system to test the physical and mechanical properties, softness, air permeability and absorptivity of the fatliquoring leather. The results showed that quaternary ammonium salt cationic surfactant was successfully prepared, and its surface tension was 31.87mN/m. The application tests showed that the absorption rate of fatliquor reached 97.8%. At the same time, the softness and physical and mechanical properties of the treated leather were improved, including softness increased by 109%, tensile strength increased by 17.2%, tear strength increased by 50.1%, and air permeability increased by 891.21L/(cm2.h). The results showed that quaternary ammonium cationic surfactant had good fatliquoring properties in F-90 tanning system, which can improve the softness, tensile strength and tear strength of leather. Note de contenu : - EXPERIMENTAL SECTION : Materials - Synthesis of quaternary ammonium salt cationic surfactant - Characterisation - RESULTS AND DISCUSSION : FTIR analysis - H-NMR analysis - Elemental analysis - Thermal stability - Surface tension - Application of quaternary ammonium surfactant in fatliquoring of leather - Test results of physical properties of crust leather En ligne : https://drive.google.com/file/d/1vCZfMADC4GQrB8RSaGkdunFUGz6gyGvu/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32798 [article]

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Toxicity values for cationic surfactants / B. Vallés in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 37, N° 5/2000 (09-10/2000)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 37, N° 5/2000 (09-10/2000) . - p. 290-296 Titre : Toxicity values for cationic surfactants : Comparison of EC50/LC50 values obtained from different toxicity bioassays for cationic surfactants in emulsions and microemulsions Type de document : texte imprimé Auteurs : B. Vallés, Auteur ; M. C. Riva, Auteur ; C. Sanpera, Auteur ; M. Canela, Auteur ; E. Griful, Auteur Année de publication : 2000 Article en page(s) : p. 290-296 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adoucissants Alkylammonium quaternaire Animaux -- Effets de la pollution de l'eau Eau -- Aspect de l'environnement Ecotoxicologie Emulsions Microémulsions Plantes aquatiques -- Effets de la pollution de l'eau Surfactants -- Toxicologie Tests de toxicité Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Effluents containing cationic softeners constitute a potential risk for the environment, which is commonly monitored by toxicity bioassays. In this study, EC50/LC50/LC50 for several cationic softeners, in both emulsions and microemulsions, were estimated through bioassays (Photobacterium phosphoreum) and aquatic biota (Chlorella vulgaris, Scenedesmus subspicatus, Selenastrum capricornutum, Daphnia magna and Oncorhynchus mykiss). The results obtained from the different bioassays were compared and their implications for toxicity monitoring were assessed. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3233 [article]

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