Interactions between a nonionic surfactant and hydrophobically modified 2-hydroxyethyl cellulose

Article Abstract:

Interaction between the nonionic surfactant Tergitol 15-S-7 and hydrophobically modified 2-hydroxyethyl cellulose (HMHEC) was studied rheologically in a semidilute regime of HMHEC. The steady-state shear measurements show that there exist crossovers between viscosity-shear rate curves of HMHEC solutions with and without surfactant added, whereas it was not observed in the HEC-surfactant systems.

All Other Basic Organic Chemical Manufacturing, Industrial Organic Chemicals, Surface active agents, Surface Active Agent Manufacturing, Nonionic Surfactants, Ethyl Cellulose, Viscosity, Cellulose ethers

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Polymer-nanoparticle complexes: From dilute solution to solid state

Article Abstract:

The formation and the structural properties of "supermicellar" aggregates made from mineral nanoparticles and polyelectrolyte-neutral block copolymers in aqueous solutions are reported. It was found that the hybrid aggregates have typical sizes in the range of 100 nm and exhibit a remarkable colloidal stability with respect to ionic strength and concentration variations.

Analysis, Solid state chemistry, Structure, Aqueous solution reactions, Nanoparticles

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