Results 41 to 50 of about 22,477 (312)

Constitutive modeling of dilute wormlike micelle solutions: shear-induced structure and transient dynamics [PDF]

open access: yesJNNFM 295, 104606 (2021), 2021
We present a reformulation of the 'reactive rod model' (RRM) of Dutta and Graham [Dutta, Sarit and Graham, Michael D., JNNFM 251 (2018)], a constitutive model for describing the behavior of dilute wormlike micelle solutions. The RRM treats wormlike micelle solutions as dilute suspensions of rigid Brownian rods undergoing reversible scission and growth ...
arxiv   +1 more source

Micellar and Surface Properties of Cationic-Cationic Binary Surfactant Mixtures: Synergistic Interactions and Solubility Enhancement of Anthracene

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
The micellar and surface behaviors of decylammonium chloride (DACl) in presence of L-alanine hydrochloride decylester (L-ADE) and L-alanine hydrochloride dodecylester (L-ADDE) at various mole fractions were investigated by conductivity and surface ...
Elif Berna Olutas
doaj   +1 more source

The surface adsorption, aggregate structure and antibacterial activity of Gemini quaternary ammonium surfactants with carboxylic counterions [PDF]

open access: yesRoyal Society Open Science, 2019
A group of Gemini quaternary ammonium surfactants with the formula CnH2n+1CONH(CH2)2N+(CH3)2(CH2)2N+(CH3)2(CH2)2 NHCOCnH2n+1 · 2Y (n = 11, 13 and 15, Y = HCOO−, CH3COO− and CH3CHOHCOO−) have been synthesized by a counterion conversion process and ...
Xiqin Zhou   +6 more
doaj   +1 more source

Colloid-chemical properties of surfactant–nitric acid–water systems

open access: yesChimica Techno Acta, 2023
The behavior of the surfactants Tween 80, SaS and alkyl betaine in aqueous and nitric acid environments as promising additives for nitrate leaching of hard-to-process ore concentrates of non-ferrous metals was studied.
Lev Danilin   +3 more
doaj   +1 more source

Structure formation in binary mixtures of surfactants: vesicle opening-up to bicelles and octopus-like micelles [PDF]

open access: yesSoft Matter 8, 8926-8935 (2012), 2012
Micelle formation in binary mixtures of surfactants is studied using a coarse-grained molecular simulation. When a vesicle composed of lipid and detergent types of molecules is ruptured, a disk-shaped micelle, the bicelle, is typically formed. It is found that cup-shaped vesicles and bicelles connected with worm-like micelles are also formed depending ...
arxiv   +1 more source

Self-consistent field theory for obligatory coassembly [PDF]

open access: yes, 2008
We present a first-order model for obligatory coassembly of block copolymers via an associative driving force in a nonselective solvent, making use of the classical self-consistent field (SCF) theory.
Leermakers, F.A.M., Voets, I.K.
core   +2 more sources

Study of Micellar Behavior of Crown Ether and Tetraethylammonium Bromide in Aqueous Media

open access: yesE-Journal of Chemistry, 2010
Conductivity measurements have been carried out to study the micellar behavior of tetraethylammonium bromide in presence of 15-crown-5 in aqueous media. The measurements were carried out at 298.15 K as a function of surfactant concentration with varying ...
R. D. Singh, Rajni Garg
doaj   +1 more source

Vitamin D drug formulation: from active substance to therapeutic effects

open access: yesЛечащий Врач, 2022
The literature review presents current data on the origin and sources of industrial production of vitamin D, and describes the features of metabolism, biological and pharmacological properties of various vitamin D vitamers.
A. S. Dukhanin
doaj   +1 more source

Aerosol-OT surfactant forms stable reverse micelles in aploar solvent in the absence of water [PDF]

open access: yesJournal of Physical Chemistry B, 2019, 2018
Normal micelle aggregates of amphiphilic surfactant in aqueous solvent are formed by a process of entropically driven self-assembly. The self-assembly of reverse micelles from amphiphilic surfactant in non-polar solvent in the presence of water is considered to be an enthalpically driven process.
arxiv   +1 more source

Voltammetric determination of the critical micellar concentration of surfactants by using a boron doped diamond anode [PDF]

open access: yes, 2010
The electrochemistry of three surfactants has been studied by voltammetry at boron doped diamond (BDD) electrode in sodium sulphate solutions. The electrochemical behaviour of these surfactants is characterized by an oxidation signal (peak or wave ...
Groenen Serrano, Karine   +2 more
core   +1 more source

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