Toward a Theory of Diffusion of a Nonionic Surfactant with Variable Aggregation Number in a Micellar System

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Toward a Theory of Diffusion of a Nonionic Surfactant with Variable Aggregation Number in a Micellar System. / Rusanov, A. I.

в: Colloid Journal, Том 80, № 1, 02.2018, стр. 81-85.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{96626e09f4f14a1ebb2933f9def62857,

title = "Toward a Theory of Diffusion of a Nonionic Surfactant with Variable Aggregation Number in a Micellar System",

abstract = "Since the aggregation number of micelles always grows with concentration, and, in some cases this dependence is noticeable even for spherical micelles, there is a need to revise the theory of micellization, in which the aggregation number is assumed to be constant. This work reformulates the theory of diffusion of nonionic surfactants in micellar solutions with regard to the variability of the aggregation number. A new formula, which expresses the diffusion coefficient of a surfactant via the diffusion coefficients of monomers and micelles, contains an additional factor capable of increasing the diffusion coefficient with the surfactant concentration. However, this factor is not overly strong, and the “old” part of the formula acts in the opposite direction; as a result, the conventional decrease in the diffusion coefficient of a nonionic surfactant remains prevailing. The analytical consideration has been supplemented with numerical calculations, the results of which are presented in the tables.",

keywords = "diffusion, micelles, NONIONIC SURFACTANTS, Surface active agents, Aggregation numbers, Micellar solution, micellar systems, Numerical calculation, Spherical micelles, Surfactant concentrations, Agglomeration",

author = "Rusanov, {A. I.}",

note = "Rusanov, A.I. Toward a Theory of Diffusion of a Nonionic Surfactant with Variable Aggregation Number in a Micellar System. Colloid J 80, 81–85 (2018). https://doi.org/10.1134/S1061933X1801009X",

year = "2018",

month = feb,

doi = "10.1134/S1061933X1801009X",

language = "English",

volume = "80",

pages = "81--85",

journal = "Colloid Journal",

issn = "1061-933X",

publisher = "Pleiades Publishing",

number = "1",

}

RIS

TY - JOUR

T1 - Toward a Theory of Diffusion of a Nonionic Surfactant with Variable Aggregation Number in a Micellar System

AU - Rusanov, A. I.

N1 - Rusanov, A.I. Toward a Theory of Diffusion of a Nonionic Surfactant with Variable Aggregation Number in a Micellar System. Colloid J 80, 81–85 (2018). https://doi.org/10.1134/S1061933X1801009X

PY - 2018/2

Y1 - 2018/2

N2 - Since the aggregation number of micelles always grows with concentration, and, in some cases this dependence is noticeable even for spherical micelles, there is a need to revise the theory of micellization, in which the aggregation number is assumed to be constant. This work reformulates the theory of diffusion of nonionic surfactants in micellar solutions with regard to the variability of the aggregation number. A new formula, which expresses the diffusion coefficient of a surfactant via the diffusion coefficients of monomers and micelles, contains an additional factor capable of increasing the diffusion coefficient with the surfactant concentration. However, this factor is not overly strong, and the “old” part of the formula acts in the opposite direction; as a result, the conventional decrease in the diffusion coefficient of a nonionic surfactant remains prevailing. The analytical consideration has been supplemented with numerical calculations, the results of which are presented in the tables.

AB - Since the aggregation number of micelles always grows with concentration, and, in some cases this dependence is noticeable even for spherical micelles, there is a need to revise the theory of micellization, in which the aggregation number is assumed to be constant. This work reformulates the theory of diffusion of nonionic surfactants in micellar solutions with regard to the variability of the aggregation number. A new formula, which expresses the diffusion coefficient of a surfactant via the diffusion coefficients of monomers and micelles, contains an additional factor capable of increasing the diffusion coefficient with the surfactant concentration. However, this factor is not overly strong, and the “old” part of the formula acts in the opposite direction; as a result, the conventional decrease in the diffusion coefficient of a nonionic surfactant remains prevailing. The analytical consideration has been supplemented with numerical calculations, the results of which are presented in the tables.

KW - diffusion

KW - micelles

KW - NONIONIC SURFACTANTS

KW - Surface active agents

KW - Aggregation numbers

KW - Micellar solution

KW - micellar systems

KW - Numerical calculation

KW - Spherical micelles

KW - Surfactant concentrations

KW - Agglomeration

UR - http://www.scopus.com/inward/record.url?scp=85042466948&partnerID=8YFLogxK

U2 - 10.1134/S1061933X1801009X

DO - 10.1134/S1061933X1801009X

M3 - Article

AN - SCOPUS:85042466948

VL - 80

SP - 81

EP - 85

JO - Colloid Journal

JF - Colloid Journal

SN - 1061-933X

IS - 1

ER -

ID: 51288204