Abstract
Density and viscosity of binary systems water-nonionic surfactants poly(ethylen-oxide) alkyl alcohols type, [CnH2n+1(OCH2CH2)mOH, CnEm], have been studied. The partial molar volumes in the dilute solution range and the viscosity B-coefficients were calculated. The nonionic surfactants partial molar volumes were compared with those of ethylene glycol and poly(ethylenglycol) (PEG). The comparison shows that the ethoxy unit volume,\(\bar V^O \) (OCH2CH2), seems to be independent of the particular system. The consequences of this are discussed. A model for interpreting the experimental B values has been proposed. The model treats the macroscopic viscosity as the superimposition of different local effects. The following surfactants have been considered: C5E1, C5E2, C6E1, C6E2, C6E3, C6E4.
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Ambrosone, L., Costantino, L., D'Errico, G. et al. Density and viscosity studies of poly(ethylene-oxide) alkyl alcohols. J Solution Chem 25, 757–772 (1996). https://doi.org/10.1007/BF00973783
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DOI: https://doi.org/10.1007/BF00973783