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Title: Controlling block copolymer phase behavior using ionic surfactant

Abstract

The phase behavior of poly(ethylene oxide)-poly(propylene oxide-poly(ethylene oxide) PEO-PPO-PEO triblock copolymer [P85 (EO{sub 26}PO{sub 39}EO{sub 26})] in presence of anionic surfactant sodium dodecyl sulfate (SDS) in aqueous solution as a function of temperature has been studied using dynamic light scattering (DLS) and small-angle neutron scattering (SANS). The measurements have been carried out for fixed concentrations (1 wt%) of block copolymer and surfactants. Each of the individual components (block copolymer and surfactant) and the nanoparticle–surfactant mixed system have been examined at varying temperature. The block copolymer P85 forms spherical micelles at room temperature whereas shows sphere-to-rod like micelle transition at higher temperatures. On the other hand, SDS surfactant forms ellipsoidal micelles over a wide temperature range. Interestingly, it is found that phase behavior of mixed micellar system (P85 + SDS) as a function of temperature is drastically different from that of P85, giving the control over the temperature-dependent phase behavior of block copolymers.

Authors:
;  [1]
  1. Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India E-mail: debes.phys@gmail.com (India)
Publication Date:
OSTI Identifier:
22606251
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1731; Journal Issue: 1; Conference: DAE solid state physics symposium 2015, Uttar Pradesh (India), 21-25 Dec 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AQUEOUS SOLUTIONS; COPOLYMERS; ETHYLENE; LIGHT SCATTERING; MICELLAR SYSTEMS; NANOPARTICLES; NEUTRON DIFFRACTION; NEUTRONS; OXIDES; PLASMA SWITCHES; POLYETHYLENE GLYCOLS; PROPYLENE; SMALL ANGLE SCATTERING; SODIUM; SPHERICAL CONFIGURATION; SULFATES; SURFACTANTS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K

Citation Formats

Ray, D., and Aswal, V. K. Controlling block copolymer phase behavior using ionic surfactant. United States: N. p., 2016. Web. doi:10.1063/1.4947646.
Ray, D., & Aswal, V. K. Controlling block copolymer phase behavior using ionic surfactant. United States. https://doi.org/10.1063/1.4947646
Ray, D., and Aswal, V. K. Mon . "Controlling block copolymer phase behavior using ionic surfactant". United States. https://doi.org/10.1063/1.4947646.
@article{osti_22606251,
title = {Controlling block copolymer phase behavior using ionic surfactant},
author = {Ray, D. and Aswal, V. K.},
abstractNote = {The phase behavior of poly(ethylene oxide)-poly(propylene oxide-poly(ethylene oxide) PEO-PPO-PEO triblock copolymer [P85 (EO{sub 26}PO{sub 39}EO{sub 26})] in presence of anionic surfactant sodium dodecyl sulfate (SDS) in aqueous solution as a function of temperature has been studied using dynamic light scattering (DLS) and small-angle neutron scattering (SANS). The measurements have been carried out for fixed concentrations (1 wt%) of block copolymer and surfactants. Each of the individual components (block copolymer and surfactant) and the nanoparticle–surfactant mixed system have been examined at varying temperature. The block copolymer P85 forms spherical micelles at room temperature whereas shows sphere-to-rod like micelle transition at higher temperatures. On the other hand, SDS surfactant forms ellipsoidal micelles over a wide temperature range. Interestingly, it is found that phase behavior of mixed micellar system (P85 + SDS) as a function of temperature is drastically different from that of P85, giving the control over the temperature-dependent phase behavior of block copolymers.},
doi = {10.1063/1.4947646},
url = {https://www.osti.gov/biblio/22606251}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1731,
place = {United States},
year = {2016},
month = {5}
}