Abstract

Firoz Kapadia* and Dharmesh Varade

DOI : http://dx.doi.org/10.13005/ojc/300250

The impact of small nonionic hydrophobic molecule, trioxyethylene monododecyl ether (C₁₂EO₃), on the viscoelastic properties of aqueous solutions of cetylpyridinium chloride (CPC) is studied. As the C₁₂EO₃ concentration increases, the viscosity passes through a maximum. Dynamic rheological measurements revealed a comprehensive picture of how C₁₂EO₃ affects the different length scales in the entangled wormlike micelles. Increase in the viscosity can normally be caused by insertion of amphiphilic C₁₂EO₃ molecules into the cationic surfactant (CPC) layer, or micellar swelling, caused by solubilization of very hydrophobic molecules in the micellar core. The partial phase behavior and rheology of this mixed surfactant systems is studied.

Novel Highly; Wormlike; Cetylpyridinium

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