Abstract
Tunable wettability was studied on series of organo-vermiculites with different layer charge. Reduced-charge vermiculites (RCVts) were fabricated via one-step heating method, which constituted a high-middle charge system. Organo-vermiculites were prepared by four cationic surfactants and characterized by XRD, FT-IR and TG. The results indicated that organo monolayer has been formed between layers and resulted in a water repelling surface. The wettability of the organo-vermiculites was monitored by capillary rise experiments. Among those factors, layer charge took a decisive position in wettability alteration. These facts give an inspiration for regulating wettability of the high charge mineral surface.
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