Phase and rheological behavior of a gemini cationic surfactant aqueous system

摘要: The phase behavior of aqueous system a gemini-type cationic surfactant, N,N′-dodecyl-2-hydroxyl-N,N,N′,N′-tetramethyl diammonium dichloride (simply written as 12-3(OH)-12(2Cl)), has been investigated by various complementary methods. A micellar solution region, hexagonal liquid crystal region and two transition regions in the diagram are confirmed SAXS polarizing microscopy. Over concentration range, 10–40 (wt%) 12-3(OH)-12(2Cl), viscoelastic properties 12-3(OH)-12(2Cl) solutions at different temperatures have determined using steady state frequency sweep rheological measurements. results from FF-TEM study good agreement with predictions shear dynamic rheology which large difference between 12-3(OH)-12(2Br) same conditions might be mainly attributed to role intermolecular hydrogen bonding occurred hydroxyl substituted spacers chloride counter ion crystallization water molecule.