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  • Title: Rheological and rheo-SALS investigation of the multi-lamellar vesicle formation in the C12E3/D2O system.
    Author: Gentile L, Rossi CO, Olsson U.
    Journal: J Colloid Interface Sci; 2012 Feb 01; 367(1):537-9. PubMed ID: 22104279.
    Abstract:
    Usually in nonionic surfactant aqueous systems of the C(n)E(m) type, a lamellar phase occurs over a wide temperature and concentration range. For some C(n)E(m) surfactants, multi-lamellar vesicle (MLV) formation has been observed when the lamellar phase is subjected to shear flow. This communication reports the shear flow behavior at different shear rate values of a C(n)E(m) (where "n" is 12 and "m" is 3) aqueous system at 34 °C. The typical transient viscosity behavior of the shear-induced MLV formation in C(12)E(3)/D(2)O at 50 wt% of surfactant has been observed. The MLV formation is confirmed by time-resolved rheo-small angle light scattering (SALS) experiments. The experimental data show an intermediate structure that has been attributed to a multi-lamellar cylinders (MLCs).
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