In order to reveal the enhancement mechanism of straight chain alcohols on the physicochemical properties of SL

the influences of alcohols on the aggregation structure of SL were investigated by means of zeta potential measurement

laser particle size analyzer and transmission electron microscope(TEM)

and the influences of alcohols with different carbon chain lengths on the adsorption characteristics of SL were further studied by using electrostatic layer-by-layer self-assembly

atomic force microscope (AFM) and a quartz crystal microbalance with dissipation monitoring(QCM-D).The results indicated that the hydrocarbon chain of alcohols produced hydrophobic interactions with the hydrophobic core of SL

prompting the carboxyl group wrapped inside to be continuously exposed out so as to increase its negative charge and reduce the degree of aggregation in aqueous solutions.The effects of alcohols with longer carbon chains were more obvious.With the addition of alcohols

the adsorption configuration of SL on solid surface changed from rigid and tight to soft and loose.The adsorption configuration of SL without adding alcohols was mushroom-like structure

of which cation- interaction was the main driving force.The adsorption configuration of SL with adding alcohols turned into polymer brushes

in which electrostatic interaction played an important role

and increased the adsorption amount of SL on solid surface sharply

facilitating the adsorption films more uniform and smooth.