Topological Dynamics of Micelles Formed by Geometrically Varied Surfactants

Adrian Sanchez-Fernandez, Johan Larsson, Anna E. Leung, Peter Holmqvist, Orsolya Czakkel, Tommy Nylander, Stefan Ulvenlund, Marie Wahlgren

Research output: Contribution to journalArticlepeer-review


The molecular architecture of sugar-based surfactants strongly affects their self-assembled structure, i.e., the type of micelles they form, which in turn controls both the dynamics and rheological properties of the system. Here, we report the segmental and mesoscopic structure and dynamics of a series of C16 maltosides with differences in the anomeric configuration and degree of tail unsaturation. Neutron spin-echo measurements showed that the segmental dynamics can be modeled as a one-dimensional array of segments where the dynamics increase with inefficient monomer packing. The network dynamics as characterized by dynamic light scattering show different relaxation modes that can be associated with the micelle structure. Hindered dynamics are observed for arrested networks of worm-like micelles, connected to their shear-thinning rheology, while nonentangled diffusing rods relate to Newtonian rheological behavior. While the design of novel surfactants with controlled properties poses a challenge for synthetic chemistry, we demonstrate how simple variations in the monomer structure can significantly influence the behavior of surfactants.

Original languageEnglish
Pages (from-to)10075-10080
Number of pages6
Issue number33
Publication statusPublished - 2022

Subject classification (UKÄ)

  • Physical Chemistry


Dive into the research topics of 'Topological Dynamics of Micelles Formed by Geometrically Varied Surfactants'. Together they form a unique fingerprint.

Cite this