Presence or absence of counterion specificity in the interaction of alkylammonium surfactants with alkylacrylamide gels

Article Abstract:

Patterns in the interaction of cationic surfactants with nonionic polymer gels, which were inferred from a study, are confirmed by measurements of a series of alkylammonium surfactants with different counterions with a series of alkyl acrylamide gels of increasing hydrophobicity. Two swelling patterns were observed and the binding studies confirmed that the amount of surfactant bound depends on the counterion in cases where saturation binding is not reached but not in cases where saturation binding is reached.

Surface active agents, Surface Active Agent Manufacturing, Polymers, Binding energy, Chemical properties

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Investigation of the segregative phase separation induced by addition of polystyrene to AOT oil-continuous microemulsions

Article Abstract:

The effects of different molecular weight polystyrenes (PS) on the phase behavior of sodium 1,4-bis(2-ethylhexyl) sulfosuccinate (AOT)/water/cyclohexane oil-continuous microemulsions are investigated. The polymer-particle segregation in this well-defined system is studied where both polymer size, particle size, and hence size ratio could be controlled and where polymer-solvent interactions could be varied across the theta temperature.

Plastics Material and Resin Manufacturing, Miscellaneous Plastics Products, NEC, Unsupported Plastics Profile Shape Manufacturing, Plastics materials and resins, Polystyrene, Styrene Resins, Polystyrene Resins NEC, Plastic Compounding, Plastic compounds

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Size, concentration, and solvency effects on the viscosifying behavior of PEO-PS-PEO triblock copolymers in AOT oil-continuous microemulsions

Article Abstract:

The effect of changing the block lengths of triblock copolymers of poly(ethylene oxide)-polystyrene-poly-(ethylene oxide) (PEO-PS-PEO) on the relative viscosity of AOT oil-continuos microemulsions, with cyclohexane as the oil, was investigated. The viscosity behavior of the PEO-PS-PEO microemulsion system is explained.

Cyclic crudes and intermediates, Cyclic Crude and Intermediate Manufacturing, Cyclohexane, Analysis, Chemistry, Physical and theoretical, Physical chemistry, Copolymers

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