title: Rheological and rheo-SALS investigation of the multi-lamellar vesicle formation in the C12E3/D2O system.
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).
authors: Department of Chemistry, University of Calabria, P. Bucci 14C, 87036 Rende, Italy. luigi.gentile@unical.it
authors: Luigi
authors: L
authors: Gentile
authors: Cesare Oliviero
authors: CO
authors: Rossi
authors: Ulf
authors: U
authors: Olsson