Table 3. IFT and Interfacial Pressure of Sea Water/Crude Oil Interface With Different Concentrations of AIPy-IL and IPy-IL in Seawater at 25 °C.

	concentration
demulsifier	(mg.L–1)	mM	IFT (mN/m)	Ω (mN m–1)	time (second)
IPy-IL	0	0	33.5	0	0
	100	0.132	25.5	8.0	600
	250	0.330	14.3	19.2	420
	500	0.660	13.2	10.3	1800
AIPy-IL	0	0	33.5	0
	100	0.098	15.3	18.2	210
	250	0.244	5.8	27.7	300
	500	0.488	2.3	31.2	1200