Prof. Ronald G. Larson

Univ. of Michigan, Dept. of Chemical Engineering, USA

Multi-Scale Modeling of the Structure and Viscoelastic Properties of Thread-like Micellar Solutions

Abstract

 Surfactant molecules self-assemble in water into a variety of aggregate structures, including long, entangled thread-like micelles. The complex dependencies of micellar structures on various types and concentrations of surfactant, salt, and additives (for instance, perfumes), make such solutions difficult to characterize and design for applications.  We use multi-scale modeling at atomistic, and coarse-grained molecular modeling, as well as a micelle-scale simulation to connect rheological properties to molecular composition. Recent application of our simulation model to commercial surfactant solutions prepared by Procter and Gamble shows good accuracy of our estimations and practical use in understating the effects of salt and additives on micellar properties.



Date: 1/9/2016
Time:11:00 (coffee & cookies will be served at 10:45)
Place:FORTH Seminar Room 1