Complexation of Pluronic L62 (EO6)-(PO34)-(EO6)/aerosol-OT (sodium bis(2-ethylhexyl)sulfosuccinate) in aqueous solutions investigated by small angle neutron scattering

Boyang Zhou; Alberto Fernandez-Nieves; Wei Ren Chen; Tae Hwan Kim; Changwoo Do

doi:10.1039/d0cp00603c

Complexation of Pluronic L62 (EO₆)-(PO₃₄)-(EO₆)/aerosol-OT (sodium bis(2-ethylhexyl)sulfosuccinate) in aqueous solutions investigated by small angle neutron scattering

Boyang Zhou, Alberto Fernandez-Nieves, Wei Ren Chen, Tae Hwan Kim, Changwoo Do

SANS & Spin Echo

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Abstract

We investigate the phase behaviours of Pluronic L62 in aqueous solution in the presence of aerosol-OT (AOT) molecules by small angle neutron scattering (SANS). The presence of AOT significantly changes the micellization phenomenon of L62 micelles in aqueous solution, including their critical micelle temperature (CMT), global size, and asphericity. The origin of these observations is attributed to the complexation between the neutral L62 surfactants and the ionic AOT molecules, which additionally provides charge to the mixed micelles: we analyse the data and extract meaningful information using the Ornstein-Zernike integral formalism. As a result, we observe that the co-micellization of L62 and AOT is very stable across a wide temperature range.

Original language	English
Pages (from-to)	12524-12531
Number of pages	8
Journal	Physical Chemistry Chemical Physics
Volume	22
Issue number	22
DOIs	https://doi.org/10.1039/d0cp00603c
State	Published - Jun 14 2020

Funding

† This manuscript has been co-authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). ‡ Electronic supplementary information (ESI) available. See DOI: 10.1039/d0cp00603c The Research at Oak Ridge National Laboratory’s Spallation Neutron Source was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy. We thank MCIU/AEI/FEDER,UE (project PGC2018-097842-B-I00) for support. The Research at Oak Ridge National Laboratory's Spallation Neutron Source was sponsored by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy. We thank MCIU/AEI/FEDER,UE (project PGC2018-097842-B-I00) for support.

Funders	Funder number
Scientific User Facilities Division
U.S. Department of Energy
Albert Ellis Institute
Basic Energy Sciences
Oak Ridge National Laboratory
Ministerio de Ciencia, Innovación y Universidades
European Regional Development Fund	PGC2018-097842-B-I00

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title = "Complexation of Pluronic L62 (EO6)-(PO34)-(EO6)/aerosol-OT (sodium bis(2-ethylhexyl)sulfosuccinate) in aqueous solutions investigated by small angle neutron scattering",

abstract = "We investigate the phase behaviours of Pluronic L62 in aqueous solution in the presence of aerosol-OT (AOT) molecules by small angle neutron scattering (SANS). The presence of AOT significantly changes the micellization phenomenon of L62 micelles in aqueous solution, including their critical micelle temperature (CMT), global size, and asphericity. The origin of these observations is attributed to the complexation between the neutral L62 surfactants and the ionic AOT molecules, which additionally provides charge to the mixed micelles: we analyse the data and extract meaningful information using the Ornstein-Zernike integral formalism. As a result, we observe that the co-micellization of L62 and AOT is very stable across a wide temperature range.",

author = "Boyang Zhou and Alberto Fernandez-Nieves and Chen, {Wei Ren} and Kim, {Tae Hwan} and Changwoo Do",

note = "Publisher Copyright: {\textcopyright} the Owner Societies 2020.",

year = "2020",

month = jun,

day = "14",

doi = "10.1039/d0cp00603c",

language = "English",

volume = "22",

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Complexation of Pluronic L62 (EO₆)-(PO₃₄)-(EO₆)/aerosol-OT (sodium bis(2-ethylhexyl)sulfosuccinate) in aqueous solutions investigated by small angle neutron scattering. / Zhou, Boyang; Fernandez-Nieves, Alberto; Chen, Wei Ren et al.
In: Physical Chemistry Chemical Physics, Vol. 22, No. 22, 14.06.2020, p. 12524-12531.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Complexation of Pluronic L62 (EO6)-(PO34)-(EO6)/aerosol-OT (sodium bis(2-ethylhexyl)sulfosuccinate) in aqueous solutions investigated by small angle neutron scattering

AU - Zhou, Boyang

AU - Fernandez-Nieves, Alberto

AU - Chen, Wei Ren

AU - Kim, Tae Hwan

AU - Do, Changwoo

PY - 2020/6/14

Y1 - 2020/6/14

N2 - We investigate the phase behaviours of Pluronic L62 in aqueous solution in the presence of aerosol-OT (AOT) molecules by small angle neutron scattering (SANS). The presence of AOT significantly changes the micellization phenomenon of L62 micelles in aqueous solution, including their critical micelle temperature (CMT), global size, and asphericity. The origin of these observations is attributed to the complexation between the neutral L62 surfactants and the ionic AOT molecules, which additionally provides charge to the mixed micelles: we analyse the data and extract meaningful information using the Ornstein-Zernike integral formalism. As a result, we observe that the co-micellization of L62 and AOT is very stable across a wide temperature range.

AB - We investigate the phase behaviours of Pluronic L62 in aqueous solution in the presence of aerosol-OT (AOT) molecules by small angle neutron scattering (SANS). The presence of AOT significantly changes the micellization phenomenon of L62 micelles in aqueous solution, including their critical micelle temperature (CMT), global size, and asphericity. The origin of these observations is attributed to the complexation between the neutral L62 surfactants and the ionic AOT molecules, which additionally provides charge to the mixed micelles: we analyse the data and extract meaningful information using the Ornstein-Zernike integral formalism. As a result, we observe that the co-micellization of L62 and AOT is very stable across a wide temperature range.

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Complexation of Pluronic L62 (EO₆)-(PO₃₄)-(EO₆)/aerosol-OT (sodium bis(2-ethylhexyl)sulfosuccinate) in aqueous solutions investigated by small angle neutron scattering

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