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Title: Complexation of Pluronic L62 (EO6 )–(PO 34 )–(EO6 )/aerosol-OT (sodium bis(2-ethylhexyl)sulfosuccinate) in aqueous solutions investigated by small angle neutron scattering

Abstract

Herein, 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.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [3]
  1. Georgia Inst. of Technology, Atlanta, GA (United States)
  2. Georgia Inst. of Technology, Atlanta, GA (United States); Univ. of Barcelona (Spain); ICREA-Institució Catalana de Recerca i Estudis Avançats, Barcelona (Spain)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Neutron Science Research Center, KAERI (Republic of Korea); Chon Buk National Univ. (Republic of Korea)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
OSTI Identifier:
1633139
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Physical Chemistry Chemical Physics. PCCP
Additional Journal Information:
Journal Volume: 22; Journal Issue: 22; Journal ID: ISSN 1463-9076
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Zhou, Boyang, Fernandez-Nieves, Alberto, Chen, Wei-Ren, Kim, Tae-Hwan, and Do, Changwoo. Complexation of Pluronic L62 (EO6 )–(PO 34 )–(EO6 )/aerosol-OT (sodium bis(2-ethylhexyl)sulfosuccinate) in aqueous solutions investigated by small angle neutron scattering. United States: N. p., 2020. Web. https://doi.org/10.1039/d0cp00603c.
Zhou, Boyang, Fernandez-Nieves, Alberto, Chen, Wei-Ren, Kim, Tae-Hwan, & Do, Changwoo. Complexation of Pluronic L62 (EO6 )–(PO 34 )–(EO6 )/aerosol-OT (sodium bis(2-ethylhexyl)sulfosuccinate) in aqueous solutions investigated by small angle neutron scattering. United States. https://doi.org/10.1039/d0cp00603c
Zhou, Boyang, Fernandez-Nieves, Alberto, Chen, Wei-Ren, Kim, Tae-Hwan, and Do, Changwoo. Thu . "Complexation of Pluronic L62 (EO6 )–(PO 34 )–(EO6 )/aerosol-OT (sodium bis(2-ethylhexyl)sulfosuccinate) in aqueous solutions investigated by small angle neutron scattering". United States. https://doi.org/10.1039/d0cp00603c. https://www.osti.gov/servlets/purl/1633139.
@article{osti_1633139,
title = {Complexation of Pluronic L62 (EO6 )–(PO 34 )–(EO6 )/aerosol-OT (sodium bis(2-ethylhexyl)sulfosuccinate) in aqueous solutions investigated by small angle neutron scattering},
author = {Zhou, Boyang and Fernandez-Nieves, Alberto and Chen, Wei-Ren and Kim, Tae-Hwan and Do, Changwoo},
abstractNote = {Herein, 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.},
doi = {10.1039/d0cp00603c},
journal = {Physical Chemistry Chemical Physics. PCCP},
number = 22,
volume = 22,
place = {United States},
year = {2020},
month = {5}
}

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