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Homogeneous Solutions of Equimolar Mixed Cationic−Anionic Surfactants
Equimolar mixed cationic−anionic surfactants usually form a precipitate at very low concentration. However, we found that aqueous mixtures of alkyltriethylammonium bromide (CnH2n+1N(C2H5)3Br, CnNE)
Effect of Headgroup Size on the Thermodynamic Properties of Micellization of Dodecyltrialkylammonium Bromides
The micellization of dodecyltrimethyl/ethyl/propyl/butylammonium bromide (C12NM, C12NE, C12NP, and C12NB) was investigated by electrical conductivity measurements at different temperatures T. In the
Effect of anionic surfactant molecular structure on bovine serum albumin (BSA) fluorescence
Abstract The interactions of BSA with different anionic surfactants, such as sodium alkyl sulfate (CnSO4Na, n = 8, 10 and 12), sodium alkyl sulfonate (CnSO3Na, n = 8, 10 and 12) and sodium alkyl
Cationic–anionic fluorinated surfactant mixtures based on short fluorocarbon chains as potential aqueous film-forming foam
Abstract A strategy for aqueous film-forming foam (AFFF) using cationic-anionic surfactant mixtures with short fluorocarbon chains (≤C4) in both cationic and anionic surfactants was proposed. The
Interaction between bovine serum albumin and equimolarly mixed cationic-anionic surfactants decyltriethylammonium bromide-sodium decyl sulfonate.
It was shown that the single ionic surfactant C10SO3 or C10NE has obvious interaction with BSA, however, the equimolarly mixed cationic-anionic surfactants C10 NE-C10SO 3 showed very weak interactions with B SA.
Striking differences between alkyl sulfate and alkyl sulfonate when mixed with cationic surfactants
The properties of alkyl sulfate and alkyl sulfonate are similar except for their Krafft points. However, alkyl sulfate and alkyl sulfonate behave quite differently when they are mixed with cationic
Aqueous Two-Phase Systems of the Aqueous Mixtures of Cationic–Anionic Surfactants
Abstract The aqueous mixtures of cationic–anionic surfactants at relatively high concentrations (much higher than CMCs) can separate spontaneously into two immiscible aqueous phases. The formation
Surfactant-induced refolding of lysozyme.
The surfactant-lysozyme interaction was investigated by circular dichroism, fluorescence, UV, dynamic light scattering, surface tension, turbidity measurements and lysozyme activity assay. A new way
Effect of surfactant head group size on polyelectrolyte-surfactant interactions: steady-state and time-resolved fluorescence study.
It is shown that the surfactant head group size has a striking effect on the interaction between surfactants and polyelectrolyte and the interaction is enhanced and stronger than that between C12NP and NaPAA.
Adsorption of cationic–anionic surfactant mixtures on activated carbon
This paper reported the adsorption of cationic–anionic surfactant mixtures, such as octyltriethylammonium bromide/sodium dodecylbenzenesulfonate (OTEAB/SDBS) and dodecylpyridinium chloride/sodium