Jump to main content
Jump to site search


The N-allyl substituted effect on wormlike micelles and salt tolerance of a C22-tailed cationic surfactant

Abstract

Wormlike micelles (WLMs) have been observed in a wide variety of cationic surfactants. Here we developed WLMs based on an N-allyl substituted cationic surfactant with unsaturated C22-tail, N-Erucamidopropyl-N,N-dimethyl-N-allyl-ammonium bromide (EDAA), and compared with UC22AMPM at same concentration. The viscoelasticity, aggregate microstructure and salt tolerance of EDAA solutions were investigated by rheology, surface tension and Cryo-TEM measurements. It was found that EDAA exhibited a higher viscosity and high salt tolerance. Upon increasing the concentration of NaCl, the viscosity of wormlike micelles in the solutions continuously increased and reached ~1.10×106mP∙s at 200 mM. Further increasing the NaCl concentration to 2000 mM, the viscosity remained at ~106mP∙s without any reduction. But the viscosity of UC22AMPM solutions has showed a volcano change with the increase of NaCl concentration. This drastic variation in rheological behavior is attributed to the presence of N-allyl substituent. Besides, the EDAA also show some advantages such as low overlapping concentration(~2.2 mM) and stable viscosity over the whole pH range.

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 Jul 2017, accepted on 09 Sep 2017 and first published on 11 Sep 2017


Article type: Paper
DOI: 10.1039/C7SM01322A
Citation: Soft Matter, 2017, Accepted Manuscript
  •   Request permissions

    The N-allyl substituted effect on wormlike micelles and salt tolerance of a C22-tailed cationic surfactant

    P. Wang, W. Kang, H. Yang, Y. Zhao, X. Yin, Z. Zhu and X. Zhang, Soft Matter, 2017, Accepted Manuscript , DOI: 10.1039/C7SM01322A

Search articles by author

Spotlight

Advertisements