The adsorption-desorption phenomena of surfactants were studied by measuring differential capacity-potential curves in a static solution and differential capacity-time curves in a flowing solution. The surfactants investigated were Aerosol OT, cetylpyridinium chloride, Hyamin 1622, tetrabutylammonium bromide, Triton X-100 and trioctylphosphineoxide. The differential capacity-potential and diffe...

OBJECTIVES To test the short term clinical effectiveness of commercially available 0.07%.cetylpyridinium chloride mouth rinse in patients undergoing fixed orthodontic treatment as compared to a placebo mouth rinse and patients using toothbrush and toothpaste. METHOD Forty-five subjects for this double blind study were assigned randomly into three groups of 15 each. Gingival inflammation, plaq...

A selective and sensitive derivative photometric method has been developed for the determination of trace amounts of Zn2+ with 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol in the presence of cetylpyridinium chloride, a cationic surfactant. The molar-absorption coefficient and analytical sensitivity of the 1:2 complex at 554 nm are 1.19 x 10(5) L mol(-1) cm(-1) and 0.56 ng mL(-1), respectively....

Previous observations of the nontransient oscillations of rising bubbles and falling spheres in wormlike micellar fluids were limited to a single surfactant system. We present an extensive survey of rising bubbles in another system, an aqueous solution of cetylpyridinium chloride and sodium salicylate, with and without NaCl, across a range of concentrations and temperatures. Two different types...

We present a study of the structural and thermomechanical properties of lyotropic phase in the quasi ternary system made of Cetylpyridinium chloride (CPCl)/hexanol/salt water (0.9 % by mass) with and without cobalt microparticles. Phase transition temperatures of the structural sequence isotropic L 1/nematic calamitic Nc ,/hexagonal H have been determined by differential scanning microcalorimet...

Aim: The antimicrobial cetylpyridinium chloride (CPC) is used in the management of denture stomatitis-associated oral candidiasis as an alternative therapy well for hygiene. Cetylpyridinium survives cavity long periods at low doses, which fluctuates due to dynamics cavity. In this study, it was aimed evaluate impact different sub-therapeutic CPC concentrations (1/100, 1/200) time (0.,5., 2., 24...

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 ent...