000			01638nab a2200205 4500
005			20260520000927.0
008			260224s2011 xxu
245	0	0	_aAtomic Force Microscopy (AFM) investigation on the surfactant wettability alteration mechanism of aged mica mineral surfaces
260			_a _b _cene./feb. 2011
270			_a01/04/2011 ; 01/04/2011
300			_a6 p. ; 183-188
520			_aTranscripción del resumen del autor. In this study, the mica samples aged in crude oil were treated by two types of surfactants: Triton X-100 and C16TAB, to find the mechanisms of wettability alteration. The contact angle measurements were conducted stepwise to check the wettability alteration of the mica surfaces. Atomic force microscopy (AFM) topographies and phase images were obtained and used to investigate the effects of aging in crude oil and surfactant treatment of the mica surface. The results show that the solution of Triton X-100/brine changes the wettability of the mica surface aged in crude oil to water-wet; however, the solution of C16TAB/brine alters the aged mica surface to more oil-wet conditions. Fractal measurement was used to check the AFM images for quantitative assessment of the surface roughness for wettability alteration investigation. Two different mechanisms proposed here are the surface cleaning and the surfactant adsorption for Triton X-100 and C16TAB, respectively.
581			_a1
773	0		_tEnergy & fuels _g25
942			_cARTICULO
100	1		_aSeiedi, Omolbanin _945021
100	1		_aRahbar, Marziyeh _945022
100	1		_aNabipour, Moein _945023
999			_c174391 _d174391