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Polyoxypropylene-polyoxyethylene tocopheryl ethers: a series of novel amphiphiles from tocopherol for functional cosmetics / Young-Dae Kim in IFSCC MAGAZINE, Vol. 4, N° 4 (10-11-12/2001)
[article]
Titre : Polyoxypropylene-polyoxyethylene tocopheryl ethers: a series of novel amphiphiles from tocopherol for functional cosmetics Type de document : texte imprimé Auteurs : Young-Dae Kim, Auteur ; Bong Rae Cho, Auteur ; Kyoung-Chan Park, Auteur Année de publication : 2001 Article en page(s) : p. 269-276 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Polyoxypropylene-polyoxyethylene tocopheryl ether' Amphiphiles 'Functional cosmetics' Anti-oxidant Melanin Erythema Emulsion Vesicle 'Liquid crystal' Index. décimale : 668.5 Parfums et cosmétiques Résumé : A series of novel non-ionic compounds, polyoxypropylene-polyoxyethylene tocopheryl ethers [POP(n)-POE(m)TEs], was synthesized by a two-step alkoxylation reaction with ethylene oxide and propylene oxide of tocopherol. The resulting molecules have been demonstrated to have potential use in functional cosmetics. Both 1H-NMR and FT-IR as well as elemental analysis methods were used to characterize the structure. By virtue of an in-vitro peroxide value study using evening primrose oil, some POP(n)-POE(m)TEs demonstrated better anti-oxidative activity than DL- α-tocopherol. In-vivo human skin protection tests showed that pre- and post-application of some POP(n)-POE(m)TEs significantly decreased the melanin pigment formation and erythema development on UVB-irradiated human skin thus indicating that some POP(n)-POE(m)TEs have significant potential for in-vivo anti-oxidative activity and/or anti-inflammation effects. Systematic safety studies demonstrate that POP(n)-POE(m)TEs to be safe for use in personal care applications. The test results of technological and practical applications for functional cosmetics showed that some POP(n)-POE(m)TEs make stable emulsion as well as liquid crystal bilayer vesicles. Some POP-n)-POE(m)TEs were shown to make very fine emulsions with long-term stability at 40°C even in very low viscosity emulsions. The formation of liquid crystals in low viscosity emulsions was confirmed by polarized light microscopy. Transmission electron microscopy (TEM) for uranyl acetate stained solutions of POP(n)-POE(m)TEs confirmed the property of vesicle formation. These results indicate that POP(n)-POE(m)TEs offer an alternative approach in improving product property versus conventional cosmetic surfactants in terms of safety, stability, and chemical and biological effect for functional cosmetics. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10688
in IFSCC MAGAZINE > Vol. 4, N° 4 (10-11-12/2001) . - p. 269-276[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003873 - Périodique Bibliothèque principale Documentaires Disponible Reversible performance of dodecyl tetramethyl guanidine solution induced by CO2 trigger / Y. Qin in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 46, N° 5/2009 (09-10/2009)
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Titre : Reversible performance of dodecyl tetramethyl guanidine solution induced by CO2 trigger Type de document : texte imprimé Auteurs : Y. Qin, Auteur ; H. Yang, Auteur ; J. Ji, Auteur ; S. Yao, Auteur ; Y. Kong, Auteur ; Y. Wang, Auteur Année de publication : 2009 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composés amphiphiles
Dioxyde de carbone
Emulsions
Mousse (chimie)
SurfactantsTags : Surfactants amphiphiles Dioxyde carbone Emulsion inverse Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Dodecyl tetramethyl guanidine (DTMG) were synthesized and characterized, and its reversible performance was studied. The results showed that DTMG could form bicarbonate ionic adduct after exposed to CO2, so it could be used as CO2 switchable surfactants. By bubbling CO2 through DTMG solution or heating COZ saturated DTMG solution, the alkali and surface active properties of solution was changed reversibly. Emulsion and foam stabilized by DTMG could be controlled between stable and unstable state by CO2. In addition, the state of DTMG solution was easy to be distinguished by naked eye through a simple indicator, phenolphthalein. Pink indicated it was inactive, and colorless indicated it was active. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6250
in TENSIDE, SURFACTANTS, DETERGENTS > Vol. 46, N° 5/2009 (09-10/2009)[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011608 - Périodique Bibliothèque principale Documentaires Disponible Basics, ingredients, detergents, product safety and sustainability / Hermann G. Hauthal in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 45, N° 1/2008 (01-02/2008)
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Titre : Basics, ingredients, detergents, product safety and sustainability : Third european detergents conference report Type de document : texte imprimé Auteurs : Hermann G. Hauthal, Auteur Année de publication : 2008 Article en page(s) : p. 30-42 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption
Détergents
Micelles
Mousse (chimie)Tags : Nanotransporters Adsorption Foam Block copolymers micelle Natural amphiphiles Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : The Third European Detergents Conference embedded in the 54th SEPAWA Congress took place in the Congress Centrum Würzburg, Bavaria, from October 10th - 12th 2007. About 140 attendees from more than 20 countries visited this event - this was am increase od 5.6% compared to 2006 En ligne : https://drive.google.com/file/d/12sXqwNrWd3M69eQsX1T_nNXBf3cDMY_U/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3054
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Code-barres Cote Support Localisation Section Disponibilité 009761 - Périodique Bibliothèque principale Documentaires Disponible