Phase behaviour of surfactants and its effect / Zeba H. Abbas in PERSONAL CARE EUROPE, Vol. 4, N° 3 (09/2011)  

[article]  inPERSONAL CARE EUROPE > Vol. 4, N° 3 (09/2011) . - p. 53-57 Titre : Phase behaviour of surfactants and its effect Type de document : texte imprimé Auteurs : Zeba H. Abbas, Auteur ; Syed H. Abbas, Auteur Année de publication : 2011 Article en page(s) : p. 53-57 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acides gras Cosmétiques Savon Surfactants Index. décimale : 668.5 Parfums et cosmétiques Résumé : Contemporary knowledge regarding the structural behaviour of soaps and surfactants is indebted to the research work conducted during the second and the third quarters of the last century by McBain, Luzzati, Lloyd, Rosevear etc. Most of the recent research work has been carried out by using pure model systems, which are very far from the real complex systems used in product formulations. However, these model studies are unable to predict the actual product properties. The objective of this article is to describe the application of some of the structural knowledge of the phase behaviour of soaps and surfactants in understanding the mechanism of formulations, processes and product attributes. This article covers the mechanism and the practical application of the main liquid and solid phases. In addition to processing conditions, other parameters such as carbon chains, functional groups and level of moisture have a large impact on the formation of these phases. Furthermore, it is important to know the significance of Krafft Point in understanding the structural aspects of soaps and surfactants. Therefore, any physicochemical change affecting the Krafft Point has a profound effect on the formation of different phases which in turn affects the product properties. Surfactants play a very important role in our day-to-day life. From morning until evening we come across a lot of products which contain surfactants at different levels. Toothpaste, bar soaps, shampoos, liquid soaps, shower gels, dish wash, fabric washing powders, fabric washing liquids, floor cleaners, car wash etc. are some of the products where surfactants are used for foaming and cleansing purposes. Creams, lotions, hair treatment, conditioners and other skin care products contain surfactants as emulsifiers to keep the product stable. Liquid fertilisers, insecticides, some medicines and food products also need surfactants as stabilisers. All these products are available in different forms such as solids, gels, liquids or pastes. Different forms of products require surfactants with different physicochemical properties, suitable for the particular product. These physicochemical properties are highly affected by the molecular structure of the surfactants. Note de contenu : - Molecular structure - Phase behaviour of surfactants - Liquid from of products - Dissolution behaviour of products with differents - Phase bar forms - Solid soap phase : Phase omega, beta and delta - Natural fatty acids - Fatty alcohols - Ethyxylated fatty acids En ligne : https://drive.google.com/file/d/1Ppr7ZEDBbB2VwDkbhv0QAWzw8hdAw87N/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12844 [article]

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