Effect of a hydrotrope on the viscoelastic properties of polymer-like micellar solutions |
| |
| Authors: | José Inés Escalante Daniel Escobar Emma Rebeca Macias Juan Humberto Pérez-López Fernando Bautista Eduardo Mendizábal Jorge E Puig Octavio Manero |
| |
| Institution: | (1) Departamento de Química, Universidad de Guadalajara, Blvd. M. García-Barragán 1451, Col. Olímpica, Guadalajara, Jalisco, 44430, Mexico;(2) Departamento de Física, Universidad de Guadalajara, Blvd. M. García-Barragán 1451, Col. Olímpica, Guadalajara, Jalisco, 44430, Mexico;(3) Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. M. García-Barragán 1451, Col. Olímpica, Guadalajara, Jalisco, 44430, Mexico;(4) Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, A. P. 70-360, D. F. 04510 México, Mexico |
| |
| Abstract: | Low-viscosity micellar aqueous solutions of cetyltrimethylammonium bromide (CTAB) undergo a major change in the presence of
the hydrotrope, potassium 1-phenylmethylsulfate (KPhMS), producing a highly viscoelastic entanglement network of polymer-like
micelles. The system studied here shows typical shear banding flow behavior, which tends to disappear with increasing the
hydrotrope-to-surfactant concentration ratio (C
H / C
S). The linear rheological response was analyzed with the model of Granek–Cates, whereas the nonlinear behavior was reproduced
with the Bautista–Manero–Puig (BMP) model. Both models introduce a kinetic equation to account for the breaking and reformation
of the micelles, and they predict the linear and nonlinear rheological data very well.
This paper was presented at Annual European Rheology Conference (AERC) held in Hersonisos, Crete, Greece, April 27–29, 2006. |
| |
| Keywords: | Hydrotrope Complex fluids Cox– Merz rule Shear-banding flow Viscoelasticity |
| 本文献已被 SpringerLink 等数据库收录！ |
|
