title: Covalent Fluorination Strategies for the Surface Modification of Polydienes.
abstract: Nonreactive additives are widely applied to enhance polymer properties but can leach out of the material over time. In this work, two essentially different fluorinated additives bearing a triazolinedione moiety are synthesized and grafted on several polydiene backbones (acrylonitrile-butadiene-styrene, styrene-butadiene, and styrene-isoprene-styrene (SIS) copolymers), either by dip-coating or by reaction in solution. The resulting polymers are analyzed by contact angle goniometry, size exclusion chromatography, and NMR, infrared, and X-ray photoelectron spectroscopy. Independent of the modification procedure, the fluorophilic perfluoroalkyl additive is found at the material surface, thereby yielding a more hydrophobic surface. For SIS thermoplastic elastomers, for example, contact angles up to 125° can be obtained.
authors.affiliation: Department of Organic and Macromolecular Chemistry, Polymer Chemistry Research Group and Laboratory for Organic Synthesis, Ghent University, Krijgslaan 281 S4, B-9000, Ghent, Belgium.
authors.forename: Kevin
authors.initials: K
authors.lastname: De Bruycker
authors.affiliation: Department of Organic and Macromolecular Chemistry, Polymer Chemistry Research Group and Laboratory for Organic Synthesis, Ghent University, Krijgslaan 281 S4, B-9000, Ghent, Belgium.
authors.forename: Maarten
authors.initials: M
authors.lastname: Delahaye
authors.affiliation: Department of Applied Physics, Research Unit Plasma Technology (RUPT), Ghent University, Sint-Pietersnieuwstraat 41 B4, B-9000, Ghent, Belgium.
authors.forename: Pieter
authors.initials: P
authors.lastname: Cools
authors.affiliation: Department of Organic and Macromolecular Chemistry, Polymer Chemistry Research Group and Laboratory for Organic Synthesis, Ghent University, Krijgslaan 281 S4, B-9000, Ghent, Belgium.
authors.forename: Johan
authors.initials: J
authors.lastname: Winne
authors.affiliation: Department of Organic and Macromolecular Chemistry, Polymer Chemistry Research Group and Laboratory for Organic Synthesis, Ghent University, Krijgslaan 281 S4, B-9000, Ghent, Belgium.
authors.forename: Filip E Du
authors.initials: FED
authors.lastname: Prez
mesh_terms: D000181:Acrylonitrile; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D054879:Halogenation; D056951:Photoelectron Spectroscopy; D011108:Polymers; D020058:Styrene; D013499:Surface Properties
chemical_list: D011108:Polymers; D020058:Styrene; D000181:Acrylonitrile
keywords: TAD chemistry; additives; fluorination; functionalization of polymers; wetting properties