Temperature and concentration effects on decyltrimethylammonium micelles in water

Karen Edler, Daniel T Bowron

Research output: Contribution to journalArticle

Abstract

Wide-angle neutron scattering experiments combined with Empirical Potential Structural Refinement modelling have been used to study the detailed structure of decyltrimethylammonium bromide (C10TAB) micelles at two different temperatures; 25 and 50 C and two concentrations; 0.4 M and 0.8 M in water. At higher temperature the micelles become smaller, and fewer counterions bind to the micelle surfaces, however the headgroup positions are more ordered, possibly due to crowding in the smaller micelles. At higher concentration the models suggest the micelles become elongated, although the aggregations numbers are smaller than those at the lower concentration. The smaller micelles found in 0.8 M solutions have more hydrated headgroups and lower counterion binding than the ellipsoidal micelles found in 0.4 M C10TAB solutions.
Original languageEnglish
Number of pages10
JournalMolecular Physics
Early online date13 Aug 2019
DOIs
Publication statusE-pub ahead of print - 13 Aug 2019

Keywords

  • micelles
  • struction
  • ion binding
  • wide-angle scattering
  • Empirical potential structure refinement

Cite this

Temperature and concentration effects on decyltrimethylammonium micelles in water. / Edler, Karen; Bowron, Daniel T.

In: Molecular Physics, 13.08.2019.

Research output: Contribution to journalArticle

@article{13ef3cc1e2324a7f9ae867b66d7d6818,
title = "Temperature and concentration effects on decyltrimethylammonium micelles in water",
abstract = "Wide-angle neutron scattering experiments combined with Empirical Potential Structural Refinement modelling have been used to study the detailed structure of decyltrimethylammonium bromide (C10TAB) micelles at two different temperatures; 25 and 50 C and two concentrations; 0.4 M and 0.8 M in water. At higher temperature the micelles become smaller, and fewer counterions bind to the micelle surfaces, however the headgroup positions are more ordered, possibly due to crowding in the smaller micelles. At higher concentration the models suggest the micelles become elongated, although the aggregations numbers are smaller than those at the lower concentration. The smaller micelles found in 0.8 M solutions have more hydrated headgroups and lower counterion binding than the ellipsoidal micelles found in 0.4 M C10TAB solutions.",
keywords = "micelles, struction, ion binding, wide-angle scattering, Empirical potential structure refinement",
author = "Karen Edler and Bowron, {Daniel T}",
year = "2019",
month = "8",
day = "13",
doi = "10.1080/00268976.2019.1649490",
language = "English",
journal = "Molecular Physics",
issn = "0026-8976",
publisher = "Taylor and Francis",

}

TY - JOUR

T1 - Temperature and concentration effects on decyltrimethylammonium micelles in water

AU - Edler, Karen

AU - Bowron, Daniel T

PY - 2019/8/13

Y1 - 2019/8/13

N2 - Wide-angle neutron scattering experiments combined with Empirical Potential Structural Refinement modelling have been used to study the detailed structure of decyltrimethylammonium bromide (C10TAB) micelles at two different temperatures; 25 and 50 C and two concentrations; 0.4 M and 0.8 M in water. At higher temperature the micelles become smaller, and fewer counterions bind to the micelle surfaces, however the headgroup positions are more ordered, possibly due to crowding in the smaller micelles. At higher concentration the models suggest the micelles become elongated, although the aggregations numbers are smaller than those at the lower concentration. The smaller micelles found in 0.8 M solutions have more hydrated headgroups and lower counterion binding than the ellipsoidal micelles found in 0.4 M C10TAB solutions.

AB - Wide-angle neutron scattering experiments combined with Empirical Potential Structural Refinement modelling have been used to study the detailed structure of decyltrimethylammonium bromide (C10TAB) micelles at two different temperatures; 25 and 50 C and two concentrations; 0.4 M and 0.8 M in water. At higher temperature the micelles become smaller, and fewer counterions bind to the micelle surfaces, however the headgroup positions are more ordered, possibly due to crowding in the smaller micelles. At higher concentration the models suggest the micelles become elongated, although the aggregations numbers are smaller than those at the lower concentration. The smaller micelles found in 0.8 M solutions have more hydrated headgroups and lower counterion binding than the ellipsoidal micelles found in 0.4 M C10TAB solutions.

KW - micelles

KW - struction

KW - ion binding

KW - wide-angle scattering

KW - Empirical potential structure refinement

U2 - 10.1080/00268976.2019.1649490

DO - 10.1080/00268976.2019.1649490

M3 - Article

JO - Molecular Physics

JF - Molecular Physics

SN - 0026-8976

ER -