Surface structure and dynamics of block and graft copolymers having fluorinated poly(ethylene oxide) chain ends
The surface compositions of poly(styrene-b-ethylene oxide) and poly(styrene-g-ethylene oxide) films were found to be largely determined by the nature of the poly(ethylene oxide) (PEO) chain ends. Angle-dependent X-ray photoelectron spectroscopy revealed that polystyrene (PS) dominated the surfaces of the copolymers having PEO chain ends terminated by hydroxyl groups (SEO). Also, the PEO content de