Improved kinetic description of fast relaxation of cylindrical micelles

Adzhemyan, L. Ts.; Eroshkin, Yu. A.; Щекин, А. К.; Babintsev, I. A.

doi:10.1016/j.physa.2018.11.057

Cited by 8 publications

(2 citation statements)

References 24 publications

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“…Theoretically, E sc was estimated using a potential of mean force [53], which was applied to simulations using the coarse grained dissipative particle dynamics (DPD) method [55]. In principle, the knowledge of the scission energy E sc is important also for kinetic models of relaxation of wormlike micelles [56,57] and for the rheological modelling of viscoelastic solutions containing giant micelles [32].…”

Section: Introductionmentioning

confidence: 99%

Analytical modeling of micelle growth. 2. Molecular thermodynamics of mixed aggregates and scission energy in wormlike micelles

Danov

Kralchevsky

Stoyanov

et al. 2019

Journal of Colloid and Interface Science

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HypothesesQuantitative molecular-thermodynamic theory of the growth of giant wormlike micelles in mixed nonionic surfactant solutions can be developed on the basis of a generalized model, which includes the classical "phase separation" and "mass action" models as special cases. The generalized model describes spherocylindrical micelles, which are simultaneously multicomponent and polydisperse in size. Theory The model is based on explicit analytical expressions for the four components of the free energy of mixed nonionic micelles: interfacial-tension, headgroup-steric, chain-conformation components and free energy of mixing. The radii of the cylindrical part and the spherical endcaps, as well as the chemical composition of the endcaps, are determined by minimization of the free energy. Findings In the case of multicomponent micelles, an additional term appears in the expression for the micelle growth parameter (scission free energy), which takes into account the fact that the micelle endcaps and cylindrical part have different compositions. The model accurately predicts the mean mass aggregation number of wormlike micelles in mixed nonionic surfactant solutions without using any adjustable parameters. The endcaps are enriched in the surfactant with smaller packing parameter that is better accommodated in regions of higher mean surface curvature. The model can be further extended to mixed solutions of nonionic, ionic and zwitterionic surfactants used in personal-care and house-hold detergency.

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Section: Introductionmentioning

confidence: 99%

Analytical modeling of micelle growth. 2. Molecular thermodynamics of mixed aggregates and scission energy in wormlike micelles

Danov

Kralchevsky

Stoyanov

et al. 2019

Journal of Colloid and Interface Science

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“…Some years ago, a new method of production of rod-like and belt-like metal oxide structures (TiO 2 , V 2 O 5 ) was suggested involving intensive stirring of salted water with initially more or less equiaxially shaped oxide powder particles at elevated or even at room temperatures [ 1 , 2 ]. This new method connected the problem of anisotropic nucleation, growth, and ripening [ 3 , 4 , 5 , 6 ] with the problem of phase and structural transformations in open driven systems [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. In order to develop a theoretical interpretation of these interconnected phenomena, the first very simplified models were advanced recently in [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Anisotropic Nucleation, Growth and Ripening under Stirring—A Phenomenological Model

Гусак

Huriev

Schmelzer

2020

Entropy

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The anisotropic formation of elongated metal-oxide aggregates in water under intensive stirring is analyzed. It is treated in terms of anisotropic ballistically mediated aggregation kinetics in open systems. The basic kinetic equations describing the stages of homogeneous nucleation, independent growth, and ripening of the aggregates are formulated for the open system under the external influence with the stirring intensity as the main parameter governing the process. The most significant elongation of the aggregates is shown to evolve at the ripening stage.

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Analytical description of molecular mechanism of fast relaxation of spherical micelles with the extended Becker–Döring differential equation

Adzhemyan

Eroshkin

Babintsev

et al. 2019

Journal of Molecular Liquids

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Improved kinetic description of fast relaxation of cylindrical micelles

Cited by 8 publications

References 24 publications

Analytical modeling of micelle growth. 2. Molecular thermodynamics of mixed aggregates and scission energy in wormlike micelles

Analytical modeling of micelle growth. 2. Molecular thermodynamics of mixed aggregates and scission energy in wormlike micelles

Anisotropic Nucleation, Growth and Ripening under Stirring—A Phenomenological Model

Analytical description of molecular mechanism of fast relaxation of spherical micelles with the extended Becker–Döring differential equation

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