Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Cationic and Nonionic Surfactant Micelles in a Halogen-Free Carboxylic Acid-Based Deep Eutectic Solvent

Bathke, Elly K. LU ; Prévost, Sylvain ; Herranz-Trillo, Fátima LU ; Sarkar, Subramee LU ; Deeming, Laura LU ; Kakadiya, Ronak LU orcid ; Kroon, Maggie LU ; Bowron, Daniel T. and Edler, Karen J. LU orcid (2025) In Langmuir 41(20). p.12489-12498
Abstract
In recent years, it has been shown that deep eutectic solvents (DES) and
similar mixtures solvate and allow for self-assembly of surfactants,
serving as potential “green” alternatives as solvents for, for example,
templating nanomaterials or drug delivery applications. Which
surfactants are soluble and how they self-assemble depends strongly on
the mixture components and their molar ratio. Here, we present the
surfactant behavior in halogen-free citric acid: glycerol-based systems
and show how a change in the molar ratio can affect the micellization of
cationic surfactants. We also study micellization of nonionic ethylene
oxide surfactants, which are insoluble in the most common hydrophilic ... (More)
In recent years, it has been shown that deep eutectic solvents (DES) and
similar mixtures solvate and allow for self-assembly of surfactants,
serving as potential “green” alternatives as solvents for, for example,
templating nanomaterials or drug delivery applications. Which
surfactants are soluble and how they self-assemble depends strongly on
the mixture components and their molar ratio. Here, we present the
surfactant behavior in halogen-free citric acid: glycerol-based systems
and show how a change in the molar ratio can affect the micellization of
cationic surfactants. We also study micellization of nonionic ethylene
oxide surfactants, which are insoluble in the most common hydrophilic
choline chloride-based DES, such as choline chloride: urea and choline
chloride: glycerol, in the absence of water. We find that the cationic C12TANO3 and C16TANO3
form spherical micelles with significantly higher intermicellar
interactions than in comparable choline chloride-based DES, indicating
that less charge screening due to the solvent components takes place.
The nonionic Brij L23 (main component C12EO23) is also found to form spherical micelles in 1:2 citric acid: glycerol, while the nonionic Brij L4 (main component C12EO4) forms less clearly structured phases at similar concentrations. (Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Langmuir
volume
41
issue
20
pages
12489 - 12498
publisher
The American Chemical Society (ACS)
external identifiers
  • pmid:40358590
  • scopus:105005354429
ISSN
0743-7463
DOI
10.1021/acs.langmuir.4c05370
language
English
LU publication?
yes
id
6bbe4d74-feed-486a-9ee9-f59848f68ee8
date added to LUP
2025-05-15 12:55:02
date last changed
2025-10-14 11:07:24
@article{6bbe4d74-feed-486a-9ee9-f59848f68ee8,
  abstract     = {{In recent years, it has been shown that deep eutectic solvents (DES) and<br>
 similar mixtures solvate and allow for self-assembly of surfactants, <br>
serving as potential “green” alternatives as solvents for, for example, <br>
templating nanomaterials or drug delivery applications. Which <br>
surfactants are soluble and how they self-assemble depends strongly on <br>
the mixture components and their molar ratio. Here, we present the <br>
surfactant behavior in halogen-free citric acid: glycerol-based systems <br>
and show how a change in the molar ratio can affect the micellization of<br>
 cationic surfactants. We also study micellization of nonionic ethylene <br>
oxide surfactants, which are insoluble in the most common hydrophilic <br>
choline chloride-based DES, such as choline chloride: urea and choline <br>
chloride: glycerol, in the absence of water. We find that the cationic C<sub>12</sub>TANO<sub>3</sub> and C<sub>16</sub>TANO<sub>3</sub><br>
 form spherical micelles with significantly higher intermicellar <br>
interactions than in comparable choline chloride-based DES, indicating <br>
that less charge screening due to the solvent components takes place. <br>
The nonionic Brij L23 (main component C<sub>12</sub>EO<sub>23</sub>) is also found to form spherical micelles in 1:2 citric acid: glycerol, while the nonionic Brij L4 (main component C<sub>12</sub>EO<sub>4</sub>) forms less clearly structured phases at similar concentrations.}},
  author       = {{Bathke, Elly K. and Prévost, Sylvain and Herranz-Trillo, Fátima and Sarkar, Subramee and Deeming, Laura and Kakadiya, Ronak and Kroon, Maggie and Bowron, Daniel T. and Edler, Karen J.}},
  issn         = {{0743-7463}},
  language     = {{eng}},
  number       = {{20}},
  pages        = {{12489--12498}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Langmuir}},
  title        = {{Cationic and Nonionic Surfactant Micelles in a Halogen-Free Carboxylic Acid-Based Deep Eutectic Solvent}},
  url          = {{http://dx.doi.org/10.1021/acs.langmuir.4c05370}},
  doi          = {{10.1021/acs.langmuir.4c05370}},
  volume       = {{41}},
  year         = {{2025}},
}