Adsorption of nonionic surfactant mixtures at the hydrophilic solid-solution interface |
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Authors: | Penfold J Tucker I Thomas R K |
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Affiliation: | ISIS, Rutherford Appleton Laboratory, CCLRC, Chilton, Didcot, Oxon, UK. |
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Abstract: | 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. |
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