Adsorption of nonionic surfactant mixtures at the hydrophilic solid-solution interface.
The adsorption of the mixed nonionic surfactants, monododecyl triethylene glycol (C2EO3) and monododecyl octaethylene glycol (C12EO8), at the hydrophilic silica-solution interface has been studied by specular neutron reflectivity. The adsorption at the solid-solution interface is compared with that previously measured at the air-solution interface. The marked differences that are observed are explained in terms of the different packing constraints or preferred curvature arising from the disparity in the respective headgroup dimensions.
ISIS, Rutherford Appleton Laboratory, CCLRC, Chilton, Didcot, Oxon, UK.
J
J
Penfold
I
I
Tucker
R K
RK
Thomas