화학공학소재연구정보센터
Journal of Colloid and Interface Science, Vol.175, No.2, 520-521, 1995
Nature of Surfactant Solloids (Aggregates on Solids)
Visualization of the shape and size of surfactant aggregates on solids (solloids) has been attempted several times in the literature from experimental and theoretical studies where the validity of different models has been debated, Even though there is a general agreement regarding the nature of ionic surfactant solloids on ionic solids, the picture is not clear for nonionic surfactants on ionic solids, In this letter, we show that the solloidal character of nonionic surfactant aggregates on ionic solids is quite different from the surfactant aggregates in solution, We also bring evidence to substantiate that these solloids are formed by anchoring the ethylene oxide chains on the solid surface and by the lateral overlapping of hydrocarbon chains, the aggregate structure tending close to a monolayer.