Interactions between LAS and nonionic surfactants

Autor:	Ted P. Matson, Nelson F. Borys, Michael F. Cox
Rok vydání:	1985
Předmět:	Surface tension chemistry.chemical_compound Calcium carbonate Chemistry General Chemical Engineering Critical micelle concentration Organic Chemistry Inorganic chemistry Sodium sulfate Hard water Micelle Hydrophile Hydrophobe
Zdroj:	Journal of the American Oil Chemists’ Society. 62:1139-1143
ISSN:	1558-9331 0003-021X
DOI:	10.1007/bf02542310
Popis:	Physicochemical interactions between linear alkylbenzene sulfonate (LAS) and various linear alcohol nonionics (NI) have been investigated. The effect of adding nonionic to LAS on critical micelle concentration (cmc), surface tension, water hardness sensitivity and detergency performance depends on both hydrophobe and hydrophile structure. The addition of low levels of a lauryl range-high EO nonionic surfactant significantly lowers cmc and causes the formation of micelles containing predominantly nonionic molecules. These mixed micelles improve hard water performance by acting as a sink for LAS and free calcium. Nonionic surfactant enhances LAS hard water performance by preventing the loss of LAS via Ca(LAS)2 precipitation, not by its own soil removal capabilities. Nonionic surfactant acts as a micelle promotion agent, while LAS remains responsible for surface and interfacial properties.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b514eb66e0911b5c2318b15d560da979 https://doi.org/10.1007/bf02542310 Zobrazit plný text záznamu Full text from SpringerLink Plný text