Topological Dynamics of Micelles Formed by Geometrically Varied Surfactants.Show others and affiliations
2022 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 38, no 33, p. 10075-10080Article in journal (Refereed) Published
Abstract [en]
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.
Place, publisher, year, edition, pages
American Chemical Society (ACS), 2022. Vol. 38, no 33, p. 10075-10080
National Category
Biomaterials Science
Identifiers
URN: urn:nbn:se:mau:diva-54107DOI: 10.1021/acs.langmuir.2c00230ISI: 000836147000001PubMedID: 35914231Scopus ID: 2-s2.0-85135987856OAI: oai:DiVA.org:mau-54107DiVA, id: diva2:1685419
2022-08-022022-08-022024-02-05Bibliographically approved