Issue 28, 2016

Rheological characterizations and molecular dynamics simulations of self-assembly in an anionic/cationic surfactant mixture

Abstract

The formation of self-assemblies in mixed amino acid-based anionic N-hexadecanoylglutamic acid (HGA) and cationic benzyldimethyl hexadecylammonium chloride (HDBAC) surfactants in aqueous solutions has been characterized. With rheological analysis, the viscoelastic properties of the mixed system are found to be completely dependent on the concentration of HDBAC. Molecular dynamics simulation results suggest that the morphology of self-assembly can be regulated from spherical micelles to wormlike micelles by the addition of HDBAC. The aromatic group of HDBAC adsorption provides a “charge-neutral” function to the micelle corona; the repulsive interactions within the head group of HGA are progressively screened and closely packed. In addition, the dynamic processes and formation mechanisms of self-assembly were analyzed in detail with molecular simulation techniques.

Graphical abstract: Rheological characterizations and molecular dynamics simulations of self-assembly in an anionic/cationic surfactant mixture

Supplementary files

Article information

Article type
Paper
Submitted
30 Mar 2016
Accepted
25 May 2016
First published
26 May 2016

Soft Matter, 2016,12, 6058-6066

Rheological characterizations and molecular dynamics simulations of self-assembly in an anionic/cationic surfactant mixture

Z. Yan, C. Dai, M. Zhao and Y. Sun, Soft Matter, 2016, 12, 6058 DOI: 10.1039/C6SM00759G

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