Studies of synergism/antagonism for lowering dynamic interfacial tensions in surfactant/alkali/acidic oil systems. 1. Synergism/Antagonism in surfactant/model oil systems.

摘要: Experimental studies are conducted in order to elucidate the mechanisms responsible for synergism/antagonism lowering dynamic interfacial tension model oil/surfactant/brine systems. A well-defined oil is selected controlled design of experiments, thus enhancing verification known and unknown mechanisms. The systems examined contain oils two petroleum sulfonate solutions. influence additives phase, such as carboxylic acids with different chain length, n-octadecanol, soluble surfactant SP-60, on equivalent alkane carbon number (EACN) values has been examined. tensions EACN against solutions n(min) have also obtained. We find that antagonism observed when EACN/n(min) value far from unity by adding organic components, while synergism close unity. results present here suggest phase changing partition surfactants aqueous interface.