title: Mussel-inspired hydrophobic coatings for water-repellent textiles and oil removal.
abstract: A series of catechol derivatives with a different number of linear alkyl chain substituents, and different length, have been shown to polymerize in the presence of aqueous ammonia and air, yielding hydrophobic coatings that present the ability to provide robust and efficient water repellency on weaved textiles, including hydrophilic cotton. The polymerization strategy presented exemplifies an alternative route to established melanin- and polydopamine-like functional coatings, affording designs in which all catechol (adhesive) moieties support specific functional side chains for maximization of the desired (hydrophobic) functionality. The coatings obtained proved effective in the transformation of polyester and cotton weaves, as well as filter paper, into reusable water-repellent, oil-absorbent materials capable of retaining roughly double their weight in model compounds (n-tetradecane and olive oil), as well as of separating water/oil mixtures by simple filtration.
authors.affiliation: Fundació Privada Ascamm, Parc Tecnològic del Vallès , Avenida Universitat Autònoma 23, E-08290 Cerdanyola del Vallès, Spain.
authors.forename: Beatríz
authors.initials: B
authors.lastname: García
authors.forename: Javier
authors.initials: J
authors.lastname: Saiz-Poseu
authors.forename: Roser
authors.initials: R
authors.lastname: Gras-Charles
authors.forename: Jordi
authors.initials: J
authors.lastname: Hernando
authors.forename: Ramon
authors.initials: R
authors.lastname: Alibés
authors.forename: Fernando
authors.initials: F
authors.lastname: Novio
authors.forename: Josep
authors.initials: J
authors.lastname: Sedó
authors.forename: Félix
authors.initials: F
authors.lastname: Busqué
authors.forename: Daniel
authors.initials: D
authors.lastname: Ruiz-Molina
mesh_terms: D065966:Absorption, Physicochemical; D000818:Animals; D049872:Bivalvia / Q000737:chemistry*; D002396:Catechols / Q000138:chemical synthesis / Q000737:chemistry; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D008970:Molecular Weight; D009821:Oils / Q000302:isolation & purification*; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry; D012996:Solutions; D013784:Textiles; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification
chemical_list: D002396:Catechols; D020099:Coated Materials, Biocompatible; D009821:Oils; D011108:Polymers; D012996:Solutions; D014874:Water Pollutants, Chemical; D014867:Water
keywords: catechol; coating; hydrophobic; mussel-inspired; pollutant removal; textile