Influence of tetraethoxylated nonylphenol on the properties of dodecaethoxylated nonylphenol micelles in aqueous mediumстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Properties of the mixed micelles of tetraethoxylated nonylphenol and dodecaethoxylated nonylphenol (NP12) in water are studied by spectrophotometry, dynamic and static light scattering methods. Data on the composition, aggregation numbers (N), sizes (Rh), and hydration (n(OE)) of mixed and individual micelles of NP12 are obtained. Two NP12 concentration regions are disclosed where mixed micelles of various compositions but with the close values of N, Rh, and n(OE) are present. It is established that the sizes and aggregation numbers of mixed micelles are noticeably larger than those of individual micelles. Features of the mixing of two studied surfactants in a micellar state are analyzed in terms of the theory of phase separation.