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Mixed micellar solutions of an oleo-furan sulfonate surfactant with anionic and non-ionic surfactants

Deeming, Laura LU ; Leaman, Niamh R. LU ; Honecker, Dirk ; Chen, Yao ; Ma, Kun and Edler, Karen J. LU orcid (2025) In Journal of Colloid and Interface Science 699(2).
Abstract

Small angle neutron scattering (SANS) has been employed to examine the self-assembly behaviour of sodium 5-tetradecyl furan-2-sulfonate (STFS), an emerging anionic surfactant, in bulk dilute solutions. STFS was also studied in binary and ternary mixtures with a common non-ionic (hexaethylene glycol monododecyl ether, C12E6) and anionic (sodium dodecyl sulfate, SDS) surfactant to explore the shape, size and composition of the mixed systems in dilute solution. SANS confirmed that STFS alone formed prolate ellipsoidal micelles and transitioned to small polydisperse spherical core-shell micelles of 55 ± 5 Å diameter for mixed systems. Anionic/non-ionic STFS/C12E6 mixtures exhibited strong... (More)

Small angle neutron scattering (SANS) has been employed to examine the self-assembly behaviour of sodium 5-tetradecyl furan-2-sulfonate (STFS), an emerging anionic surfactant, in bulk dilute solutions. STFS was also studied in binary and ternary mixtures with a common non-ionic (hexaethylene glycol monododecyl ether, C12E6) and anionic (sodium dodecyl sulfate, SDS) surfactant to explore the shape, size and composition of the mixed systems in dilute solution. SANS confirmed that STFS alone formed prolate ellipsoidal micelles and transitioned to small polydisperse spherical core-shell micelles of 55 ± 5 Å diameter for mixed systems. Anionic/non-ionic STFS/C12E6 mixtures exhibited strong synergistic interactions, with a significant reduction in critical micelle concentration (CMC) and preferential incorporation of C12E6 into the micelle compared to bulk solution molar ratios. In contrast, STFS/SDS mixtures showed weaker synergism, with minimal SDS incorporation attributed to electrostatic repulsions. Ternary systems displayed intermediate behaviour, with STFS and C12E6 dominating micelle formation while SDS remained mostly excluded. At higher concentrations (10, 20 mM) in SANS measurements the STFS/C12E6 tended towards more bulk solution molar ratio mixing behaviour whilst SDS stayed minimally incorporated into the micelle, regardless of concentration.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Colloid and Interface Science
volume
699
issue
2
article number
138201
publisher
Academic Press
external identifiers
  • scopus:105009292953
  • pmid:40580562
ISSN
0021-9797
DOI
10.1016/j.jcis.2025.138201
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2025 The Authors
id
71e15239-def6-4ee6-9396-a2b9e72872d1
date added to LUP
2025-07-08 16:52:42
date last changed
2025-08-12 12:34:26
@article{71e15239-def6-4ee6-9396-a2b9e72872d1,
  abstract     = {{<p>Small angle neutron scattering (SANS) has been employed to examine the self-assembly behaviour of sodium 5-tetradecyl furan-2-sulfonate (STFS), an emerging anionic surfactant, in bulk dilute solutions. STFS was also studied in binary and ternary mixtures with a common non-ionic (hexaethylene glycol monododecyl ether, C<sub>12</sub>E<sub>6</sub>) and anionic (sodium dodecyl sulfate, SDS) surfactant to explore the shape, size and composition of the mixed systems in dilute solution. SANS confirmed that STFS alone formed prolate ellipsoidal micelles and transitioned to small polydisperse spherical core-shell micelles of 55 ± 5 Å diameter for mixed systems. Anionic/non-ionic STFS/C<sub>12</sub>E<sub>6</sub> mixtures exhibited strong synergistic interactions, with a significant reduction in critical micelle concentration (CMC) and preferential incorporation of C<sub>12</sub>E<sub>6</sub> into the micelle compared to bulk solution molar ratios. In contrast, STFS/SDS mixtures showed weaker synergism, with minimal SDS incorporation attributed to electrostatic repulsions. Ternary systems displayed intermediate behaviour, with STFS and C<sub>12</sub>E<sub>6</sub> dominating micelle formation while SDS remained mostly excluded. At higher concentrations (10, 20 mM) in SANS measurements the STFS/C<sub>12</sub>E<sub>6</sub> tended towards more bulk solution molar ratio mixing behaviour whilst SDS stayed minimally incorporated into the micelle, regardless of concentration.</p>}},
  author       = {{Deeming, Laura and Leaman, Niamh R. and Honecker, Dirk and Chen, Yao and Ma, Kun and Edler, Karen J.}},
  issn         = {{0021-9797}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{Academic Press}},
  series       = {{Journal of Colloid and Interface Science}},
  title        = {{Mixed micellar solutions of an oleo-furan sulfonate surfactant with anionic and non-ionic surfactants}},
  url          = {{http://dx.doi.org/10.1016/j.jcis.2025.138201}},
  doi          = {{10.1016/j.jcis.2025.138201}},
  volume       = {{699}},
  year         = {{2025}},
}