Effects of chemical structures of para-halobenzoates on micelle nanostructure, drag reduction and rheological behaviors of dilute CTAC solutions

The p-fluoro system also showed only small zeta-potential reductions at all ratios while the other three showed moderate to large decreases in zeta-potential with increase in ξ, crossing from positive to negative values. The ratios at the crossing points followed the order of the molecular size and hydrophobicity: I, Br and Cl.