TY - JOUR

T1 - Diffusion of Alkyltriphenylphosphonium Bromides in Aqueous Micellar Solutions

AU - Movchan, T. G.

AU - Rusanov, A. I.

AU - Plotnikova, E. V.

AU - Soboleva, I. V.

N1 - Movchan, T.G., Rusanov, A.I., Plotnikova, E.V. et al. Diffusion of Alkyltriphenylphosphonium Bromides in Aqueous Micellar Solutions. Colloid J 80, 290–297 (2018). https://doi.org/10.1134/S1061933X18030109

PY - 2018/6

Y1 - 2018/6

N2 - Dynamic light scattering, conductometry, and capillary viscometry have been used to study aqueous micellar solutions of dodecyl-, tetradecyl-, and hexadecyltriphenylphosphonium bromides in a wide range of concentrations covering the first and second critical micelle concentrations (CMC1 and CMC2). It has been shown that the concentration curves for the diffusion coefficients of the ionic surfactants increase above CMC1 and, then, pass through a maximum. As the alkyl chain length increases, the slopes of the concentration curves within the range of the linear growth in the diffusion coefficient rise, the height of the maximum increases, and its position shifts toward lower concentrations. The obtained results have been explained in terms of a theory previously developed for ideal micellar systems. It has been shown that the mobility factor plays the predominant role in the range of the linear increase in the diffusion coefficient and the effect of the viscosity of a micellar surfactant solution is enhanced with a rise in its concentration.

AB - Dynamic light scattering, conductometry, and capillary viscometry have been used to study aqueous micellar solutions of dodecyl-, tetradecyl-, and hexadecyltriphenylphosphonium bromides in a wide range of concentrations covering the first and second critical micelle concentrations (CMC1 and CMC2). It has been shown that the concentration curves for the diffusion coefficients of the ionic surfactants increase above CMC1 and, then, pass through a maximum. As the alkyl chain length increases, the slopes of the concentration curves within the range of the linear growth in the diffusion coefficient rise, the height of the maximum increases, and its position shifts toward lower concentrations. The obtained results have been explained in terms of a theory previously developed for ideal micellar systems. It has been shown that the mobility factor plays the predominant role in the range of the linear increase in the diffusion coefficient and the effect of the viscosity of a micellar surfactant solution is enhanced with a rise in its concentration.

UR - http://www.scopus.com/inward/record.url?scp=85048059143&partnerID=8YFLogxK

U2 - 10.1134/S1061933X18030109

DO - 10.1134/S1061933X18030109

M3 - Article

AN - SCOPUS:85048059143

VL - 80

SP - 290

EP - 297

JO - Colloid Journal

JF - Colloid Journal

SN - 1061-933X

IS - 3

ER -