Reliable aggregation numbers are obtained for polyelectrolyte bound cationic micelles using fluorescence quenching with a cationic surfactant quencher

Article Abstract:

Surfactant quenchers with properties similar to the cationic surfactant dodecyltrimethylammonium bromide offer significant advantages over the more conventional quenchers. It is a benefit that the quencher and the surfactant are similar in their interactions with each other and with the polyelectrolyte.

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Mixed solutions of surfactant and hydrophobically modified polymer. Controlling viscosity with micellar size

Article Abstract:

A higher viscosity may be regained by changing the stoichiometry between polymer hydrophobic tails and mixed micelles. This was gleaned from a study of the viscosity of mixtures of a hydrophobically modified cellulose polymer and surfactants in aqueous solution and the effect of concentration of mixed micelles. Specifically, it was found that a high viscosity is recoverable by increasing the surfactant aggregation number in the mixed micelles. The increase can be achieved either by adding a screening electrolyte or an oppositely charged surfactant to solutions with the hydrophobically modified polymer and an ionic surfactant.

Polymers, Viscosity, Micelles

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Aggregation behavior of cationic fluorosurfactants in water and salt solutions. A cryoTEM survey

Article Abstract:

A new study investigates the aggregation behavior of cationic fluorosurfactants in aqueous solution using cryo-transmission electron microscopy.

Cell aggregation, Chemistry, Physical and theoretical, Physical chemistry, Fluorides

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