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Surface Tension of Micellar Block Copolymer Films
이희주,Zhang Jiang,Jung-Ran Lim,이주한,Xiaolong Li,김현정 한국물리학회 2010 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.57 No.6
Surface tensions of micellar block copolymers of poly(styrene-b-dimethylsiloxane) (PS-b-PDMS) films are obtained by X-ray diffuse scattering. PS-b-PDMS films on Si substrates with the thicknesses from 36 to 588 nm were investigated at temperatures of 30 - 215 ℃. The surface tension reflects the concentration of PDMS micelles which are preferably located at the surface. The molar fraction of PDMS micelles near the surface is estimated by using angle-resolved X-ray photoelectron spectroscopy.