From Hydrophylicity to Surface Hydrophobicity: Variation of the Wettability of a Material on a Substrate Due to Local Vibrational Effects during Its Interface Synthesis

Abstract

A system of an aqueous solution of a lanthanide salt di-(2-ethylhexyl)phosphoric acid in a diluent (heptane, toluene, carbon tetrachloride) is used to show that the local vibration on the interfacial layer in a system of two immiscible liquids during interfacial synthesis can produce a qualitative change in the wettability of the substrate onto which the material of interfacial formations is transferred. This makes the surface hydrophobic or hydrophilic due to different structuring, as in the lotus leaf effect. By varying the composition of the system, the conditions of the process, and the parameters of the external force field, a material with a given angle of contact (30° to 163°) can be obtained, improving the consumer qualities of its carrier.