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Effect of specific additives on the degree of sulfonation and its influence on leather fatliquoring / R. Janardhanan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 9 (09/2012)
[article]
Titre : Effect of specific additives on the degree of sulfonation and its influence on leather fatliquoring Type de document : texte imprimé Auteurs : R. Janardhanan, Auteur ; V. Vijayabaskar, Auteur ; B. S. R. Reddy, Auteur Année de publication : 2012 Article en page(s) : p. 279-285 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Additifs
Catalyse par transfert de phase
Cuirs et peaux
Emulsifiants
Mouillage (chimie des surfaces)
Potentiel zeta
Produits de nourriture du cuir
Sulfonation
Sulfosuccinates
Surfactants
Tension superficielleIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Sulfosuccinate type anionic surfactants are classical ingredients for industrial applications. They are of great interest because of their excellent surfactant properties. Fatliquors prepared from sulfosuccinates have been effectively utilized in the leather industry, where the degree of sulfonation of the surfactant plays a crucial role in deciding performance. This paper reports on the study of factors such as the addition of phase transfer catalyst, non-ionic wetting emulsifier and co-solvent on the degree of sulfonation. Emusification power, zeta potential, surface tension and particle size were measured. Reaction conditions were optimized, based on the results. Fatliquors were prepared using different sulfosuccinates and applied on leather. The properties of resultant leathers were studied qualitatively and quantitatively, and SEM studies were carried out for the treated leathers. This work provides a basis for the development of better fatliquoring agents. Note de contenu : - MATERIALS AND METHODS : Materials - Control batch - Experiment 1 (E1 - Addition 5% phase transfer catalyst) - Experiment 2 (E2 - Addition 5% non-ionic emulsifier) - Experiment 3 (E3 - Addition 5% co-solvent) - Application on leather - Characterisation methods
- PROPERTIES OF RESULTANT LEATHER
- SEM STUDIES
- DISCUSSION : Sulfonate content of the surfactants - Effect of co-solvent - Effect of emulsifier - Effect of phase transfer catalyst - Properties of sulfosuccinates - Properties of resultant leathersEn ligne : https://drive.google.com/file/d/1fV7HN44YCVqzM67LrDl2HHYBnbANX-r3/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16058
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Code-barres Cote Support Localisation Section Disponibilité 14267 - Périodique Bibliothèque principale Documentaires Disponible 14209 - Périodique Bibliothèque principale Documentaires Disponible Efficiency and versatility of new natural emulsifier / Juanshu Shen in PERSONAL CARE EUROPE, Vol. 9, N° 2 (04/2016)
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Titre : Efficiency and versatility of new natural emulsifier Type de document : texte imprimé Auteurs : Juanshu Shen, Auteur Année de publication : 2016 Article en page(s) : p. 117-120 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie écologique
Cristaux liquides
Emulsifiants
Emulsions -- Emploi en cosmétologie
Formulation (Génie chimique)
Glycolipides
Peau -- Soins et hygiène
Produits hydratantsIndex. décimale : 668.5 Parfums et cosmétiques Résumé : Oil-in-water (0/W) emulsions are the most common formulation type in cosmetics as it is an ideal medium to transport ail types of active ingredients (hydrophilic and lipophilic). It facilitates the formulation of a wide range of texture with varied sensory properties. The emulsifier in the heart of the emulsion plays a key role in this system. Its primary role is to ensure what is called 'good emulsifying power', i.e. the ability to finely disperse oil droplets in water and keep them stable. Depending on ils structure and its rheological properties, the emulsifier also plays an important sensorial role.
In the current context of sustainable development and economics, more and more consumers are looking for multifunctional products : two-in-one, three-in-one, and sometimes even more versatility. Similarly, cosmetics manufacturers are looking for 'multifaceted' ingredients, able to perform several tasks in order to diminish the number of ingredients in their formulas. The manufacturing process is thus streamlined and consumes less energy.
Today, emulsifiers offering simply good emulsifying power are considered 'basic' emulsifiers. Expectations are high and consumers and manufacturers want versatility.
Montanov L (C14-22 Alcohols and C12-20 Aikyl Glucoside) is a 100% plant-based, environmentally-friendly glucolipidic emulsifier that offers such versatility. It is manufactured in accordance with the 12 principles of green chemistry and exhibits high-performance emulsifying power, an elegant sensory profile, a comforting and a moisturising effect thanks to its liquid crystals, as well as the ability to create a universal chassis that is customisable and helps reduce the development time-to-market. Globally approved by both chemical and cosmetic regulations, Montanov L is a multifaceted emulsifier of excellence that meets all the market requirements.Note de contenu : - Bio-based structure
- Universal and efficient emulsifying power
- Sensory profile
- Creator of varied textures
- A liquid crystal promoter
- An active emulsifier : immediate and long-term moisturising
- FORMULATION : 1. Melting caramel butter - 2. Time break mistPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26045
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Code-barres Cote Support Localisation Section Disponibilité 17938 - Périodique Bibliothèque principale Documentaires Disponible Electron microscope studies of leather-polymer systems / John R. Barlow in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 57 (Année 1973)
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Titre : Electron microscope studies of leather-polymer systems Type de document : texte imprimé Auteurs : John R. Barlow, Auteur ; R. Reed, Auteur Année de publication : 1973 Article en page(s) : p. 130-136 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Analyse
Cuirs et peaux -- Finition
Dispersions et suspensions
Emulsifiants
Emulsions
Latex
Microscopie électronique en transmission
pH
Polyacryliques
Polymères en émulsion
Polymérisation en émulsion
Tannage au chromeIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Polymeric materials may be applied to the surface of leather, as so-called finishes, to improve the appearance and performance characteristics of the substrate. The polymers used may be natural or synthetic in origin and are applied as solutions in organic solvents or as water-based emulsions. The latter systems are usually formed from acrylic polymers and are produced as spherical particles, dispersed in an aqueous phase, by the technique of emulsion polymerisation.
Transmission electron miroscopy has been used extensively to study the fine structure of leather and to characterise emulsion commonly used in leather finishing. However, with the exception of a single micrograph shown by Kanagy, studies of combined leather-polymer systems have not been carried out using this technique.
This article indicates a method of preparing leather-polymer systems for study in the electron microscope, giving information on the forces of interaction operative between the species present.Note de contenu : Methods : Variation of time of contact between leather fibres and polymer particles - Variation of emulsion type and pH of leather-latex systems
- RESULTS : Variation of time of contact between leather fibres and polymer dispersions - Variation of emulsifier type and pH value of th eleather/latex system
- Fig. 1 : Full-chrome leather fibres plus latex 1. Time of contact in (a) less than 5 sec ; (b) 5 min ; (c) 20 min ; d) complete drying
- Fig. 2 : a) Full chrome leather fibres plus latex 2, complete drying. (b) As (a) but latex 3,5 min drying. IP = individual particle. (c) As (b) but complete drying
- Fig. 3 : Full-chrome leather fibres plus latex 1, with variation of the pH of the dispersion media. Time of contact = 1 min (a) pH 3.0 ; (b) pH 4.5 ; (c) pH 8.0
- Fig. 4 : Full-chrome leather fibres plus commercial anionic latex, with variation of the pH of the dispersion media. Time of contact = 1 min. (a) pH 3.0, lower magnification (scale mark = 2 microns) ; (b) pH 4.5 ; (c) pH 8.0 ; (d) pH 8.0, lower magnificatio (scale mark = 2 microns)
- Fig. 5 : Full-chrome leather fibres plus commercial non-ionic latex, with variation of the pH of the dispersion media. Time of contact = 1 min. (a) pH 3.0 ; (b) pH 4.5 ; (c) pH 8.0
- Table 1 : Properties of the test latices
- Table 2 : Commercial emulsions
- Table 3 : Surface charges on leather fibres and particles of test laticesEn ligne : https://drive.google.com/file/d/1pqlM68oQTC4vttXNpQTexjHKo9lXB1eV/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31691
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 57 (Année 1973) . - p. 130-136[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 008593 - Périodique Archives Documentaires Exclu du prêt Emulium illustro, l'émulsionnant E/H qui n'a pas fini de vous surprendre ! in ADDIACTIVE, N° 118 (2021)
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Titre : Emulium illustro, l'émulsionnant E/H qui n'a pas fini de vous surprendre ! Type de document : texte imprimé Année de publication : 2021 Article en page(s) : p. 22-23 Langues : Français (fre) Catégories : Emulsifiants
Ingrédients cosmétiques
Produits naturelsIndex. décimale : 668.5 Parfums et cosmétiques Résumé : Depuis le lancement d'Emulium Illustro en 2018, nous n'avons cessé de repousser ses limites et d'affiner nos connaissances sur cet ingrédient et sur la formulation des émulsions E/H de manière générale. voici quelques rappels pour formuler vos émulsions E/H. Note de contenu : - La polarité des huiles, un paramètre clé
- Mettre son grain de sel
- Un jeu d'enfant
- Une sensorialité améliorée
- Figure : Analyse sensorielle de trois formules aux applications différentes : un fond de teint, un soin solaire et une crème de soinEn ligne : https://drive.google.com/file/d/10WMKipzUG-od6bUfzJTq57xKkb1LScGT/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36065
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Code-barres Cote Support Localisation Section Disponibilité 22853 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Emulium Mellifera MB prend l'autoroute du soleil Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 18-19 Langues : Français (fre) Catégories : Emulsifiants
Formulation (Génie chimique)
Ingrédients cosmétiques
Produits antisolairesIndex. décimale : 668.5 Parfums et cosmétiques Résumé : Cet émulsionnant aux multiples facettes demande quelques précisions lors de son utilisation et notamment dans les applications solaires. En ligne : https://drive.google.com/file/d/1tf1j-zBa26HyGFkv5D3UcgsXONU8mgRU/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31706
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