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VROC® it!

LIVE Webinar: Monitoring Self Assembly in Complex Fluids with Viscosity

Amphiphilic molecules, which contain both hydrophilic and hydrophobic domains, can self-assemble in aqueous solutions. One of the most common structures formed is the spherical micelle where the hydrophobic groups reside in the core to be shielded from exposure to water. A variety of common molecules form spherical micelles including surfactants, multi-block polymers, and certain types of proteins. Since viscosity is a sensitive indicator of the fluid microstructure, it is a useful tool to characterize various aspects of micelle formation.Surfactants & critical micelle concentration (CMC) - DataPhysics Instruments

Please join us on August 31st as we discuss the use of our fully automated VROC® initium one plus viscometer to characterize the self-assembly of both surfactant and milk protein formulations. The focus will be on the benefits of concentration dependent viscosity measurements and the information that can be extracted. For the surfactant solutions, viscosity will be presented as an alternative method to surface tension for identification of the critical micelle concentration or CMC. A full intrinsic viscosity or dilute concentration series analysis of sodium caseinate will be reviewed. We will also illustrate how the intrinsic viscosity parameter can be combined with the protein molecular weight to estimate the hydrodynamic radius and volume fraction of the sodium caseinate micelles.


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