A statistical model for mixed non-ionic-ionic amphiphile solutions with a vanishing miscibility loop and anomalous small-angle scattering

A. Meroni; A. Pimpinelli; L. Reatto

doi:10.1016/0009-2614(87)87231-7

A statistical model for mixed non-ionic-ionic amphiphile solutions with a vanishing miscibility loop and anomalous small-angle scattering

A. Meroni, A. Pimpinelli, L. Reatto

Houston Methodist

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

7 Scopus citations

Abstract

A model recently developed for non-ionic globular micelles is tested by adding a screened electrostatic contribution to the intermicellar interaction. This models solutions of mixed non-ionic-ionic amphiphiles. The closed solubility loop shrinks until it disappears above a charge per micelle value of Q_c With the parameters appropriate for C₁₂E₈, Qc is of the order of 1.5-3 electronic charges. This is similar to the value measured in SDS-C₁₂E₆ mixed micelles. We predict an anomalous small-angle scattering with a divergence of the structure factor at a finite wavevector.

Original language	English (US)
Pages (from-to)	137-142
Number of pages	6
Journal	Chemical Physics Letters
Volume	135
Issue number	1-2
DOIs	https://doi.org/10.1016/0009-2614(87)87231-7
State	Published - Mar 27 1987

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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abstract = "A model recently developed for non-ionic globular micelles is tested by adding a screened electrostatic contribution to the intermicellar interaction. This models solutions of mixed non-ionic-ionic amphiphiles. The closed solubility loop shrinks until it disappears above a charge per micelle value of Qc With the parameters appropriate for C12E8, Qc is of the order of 1.5-3 electronic charges. This is similar to the value measured in SDS-C12E6 mixed micelles. We predict an anomalous small-angle scattering with a divergence of the structure factor at a finite wavevector.",

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AU - Meroni, A.

AU - Pimpinelli, A.

AU - Reatto, L.

PY - 1987/3/27

Y1 - 1987/3/27

N2 - A model recently developed for non-ionic globular micelles is tested by adding a screened electrostatic contribution to the intermicellar interaction. This models solutions of mixed non-ionic-ionic amphiphiles. The closed solubility loop shrinks until it disappears above a charge per micelle value of Qc With the parameters appropriate for C12E8, Qc is of the order of 1.5-3 electronic charges. This is similar to the value measured in SDS-C12E6 mixed micelles. We predict an anomalous small-angle scattering with a divergence of the structure factor at a finite wavevector.

AB - A model recently developed for non-ionic globular micelles is tested by adding a screened electrostatic contribution to the intermicellar interaction. This models solutions of mixed non-ionic-ionic amphiphiles. The closed solubility loop shrinks until it disappears above a charge per micelle value of Qc With the parameters appropriate for C12E8, Qc is of the order of 1.5-3 electronic charges. This is similar to the value measured in SDS-C12E6 mixed micelles. We predict an anomalous small-angle scattering with a divergence of the structure factor at a finite wavevector.

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A statistical model for mixed non-ionic-ionic amphiphile solutions with a vanishing miscibility loop and anomalous small-angle scattering

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