title: Highly water repellent but highly adhesive surface with segregation of poly(ethylene oxide) side chains.
abstract: Polymer surfaces were modified using methacrylate terpolymers containing both perfluoroalkyl (Rf) groups and poly(ethylene oxide) (PEO) as side chains in the same molecule. The structure and properties of the modified surfaces were evaluated using X-ray photoelectron spectroscopy and by measuring the dynamic contact angles and 90° peel strength. It was found that not only Rf groups but also PEO side chains were segregated on the surface being against the order of the surface free energy. The terpolymer modified surface is hydrophobic in air because Rf groups are predominant, but it becomes hydrophilic in water because the surface is covered with PEO side chains. This response to the environment is rapid and reversible. The modified surface showed high water repellency because of the surface Rf groups and high adhesive strength because of the side chains.
authors.affiliation: Department of Chemical Science and Engineering, Graduate School of Engineering, Kobe University , Rokko, Nada, Kobe 657-8501, Japan.
authors.forename: Kaya
authors.initials: K
authors.lastname: Tokuda
authors.forename: Motoko
authors.initials: M
authors.lastname: Kawasaki
authors.forename: Masaru
authors.initials: M
authors.lastname: Kotera
authors.forename: Takashi
authors.initials: T
authors.lastname: Nishino
mesh_terms: D000269:Adhesives / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D018625:Microscopy, Atomic Force; D056951:Photoelectron Spectroscopy; D011092:Polyethylene Glycols / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D000269:Adhesives; D014867:Water; D011092:Polyethylene Glycols