Extension of the Inverse “Dry” Micelle Model to Disc-Shaped Aggregates

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Extension of the Inverse “Dry” Micelle Model to Disc-Shaped Aggregates. / Ерошкин, Юрий Андреевич ; Аджемян, Лоран Цолакович ; Щёкин, Александр Кимович.

In: Colloid Journal, Vol. 87, No. 4, 08.2025, p. 492-504.

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

BibTeX

@article{7381bef5a8534348bc3cd83533bed1b4,

title = "Extension of the Inverse “Dry” Micelle Model to Disc-Shaped Aggregates",

abstract = "A molecular thermodynamic model has been considered for the formation and growth of nonionic aggregates of surfactant molecules in a nonpolar solvent in the absence of water. The model implies fluctuating coexistence of micelles having different shapes without activation barriers between them. The work of micelle aggregation has been derived for a solution in heptane using molecular dynamics data. In the considered model, it is assumed that, for any aggregation numbers, the minimal aggregation work depends not only on the aggregation numbers and surfactant monomer concentration, but also on two independent shape parameters characterizing the deviation from the spherical shape of an aggregate. This approach provides a unified description for both disc-shaped and cylindrical micelles.",

keywords = "surfactants, micelles, thermodynamics, aggregative equilibrium, statistical description, aggregative equilibrium, micelles, statistical description, surfactants, thermodynamics",

author = "Ерошкин, {Юрий Андреевич} and Аджемян, {Лоран Цолакович} and Щёкин, {Александр Кимович}",

year = "2025",

month = aug,

doi = "10.1134/s1061933x25600356",

language = "English",

volume = "87",

pages = "492--504",

journal = "Colloid Journal",

issn = "1061-933X",

publisher = "Pleiades Publishing",

number = "4",

}

RIS

TY - JOUR

T1 - Extension of the Inverse “Dry” Micelle Model to Disc-Shaped Aggregates

AU - Ерошкин, Юрий Андреевич

AU - Аджемян, Лоран Цолакович

AU - Щёкин, Александр Кимович

PY - 2025/8

Y1 - 2025/8

N2 - A molecular thermodynamic model has been considered for the formation and growth of nonionic aggregates of surfactant molecules in a nonpolar solvent in the absence of water. The model implies fluctuating coexistence of micelles having different shapes without activation barriers between them. The work of micelle aggregation has been derived for a solution in heptane using molecular dynamics data. In the considered model, it is assumed that, for any aggregation numbers, the minimal aggregation work depends not only on the aggregation numbers and surfactant monomer concentration, but also on two independent shape parameters characterizing the deviation from the spherical shape of an aggregate. This approach provides a unified description for both disc-shaped and cylindrical micelles.

AB - A molecular thermodynamic model has been considered for the formation and growth of nonionic aggregates of surfactant molecules in a nonpolar solvent in the absence of water. The model implies fluctuating coexistence of micelles having different shapes without activation barriers between them. The work of micelle aggregation has been derived for a solution in heptane using molecular dynamics data. In the considered model, it is assumed that, for any aggregation numbers, the minimal aggregation work depends not only on the aggregation numbers and surfactant monomer concentration, but also on two independent shape parameters characterizing the deviation from the spherical shape of an aggregate. This approach provides a unified description for both disc-shaped and cylindrical micelles.

KW - surfactants, micelles, thermodynamics, aggregative equilibrium, statistical description

KW - aggregative equilibrium

KW - micelles

KW - statistical description

KW - surfactants

KW - thermodynamics

UR - https://www.mendeley.com/catalogue/8c4183c2-9b84-3f24-a78a-859139802f7f/

U2 - 10.1134/s1061933x25600356

DO - 10.1134/s1061933x25600356

M3 - Article

VL - 87

SP - 492

EP - 504

JO - Colloid Journal

JF - Colloid Journal

SN - 1061-933X

IS - 4

ER -

ID: 145938687