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Abstract
A smectic polystyrene–poly(perfluorooctylethyl acrylate) block copolymer was synthesized by atom transfer radical polymerization and blended with a thermoplastic elastomer SEBS in different compositions. The mesophase structure and transition temperatures were investigated by DSC and WAXD. Thin films of the block copolymer and the blends exhibited large contact angles with both water and n-hexadecane, which resulted in low solid surface tensions. XPS findings at different photoemission angles confirmed the effective surface segregation of the mesogenic chains of the fluorinated polymer block.
Notes
a Glass transition and melting temperatures of the ethylene-co-butylene block of SEBS.
b Isotropization temperature of the fluorinated block of the block copolymer.
c Glass transition temperature of the polystyrene block of the block copolymer.
a Contact angles measured with water, n-hexadecane, and ethylene glycol.
b
Calculated with the Owens–Wendt–Kaelble method: γSd dispersion component, polar component.
a Calculated on the basis of the known degrees of polymerization n and m.
