Poly(fluoroacrylate)s with tunable surface hydrophobicity via radical copolymerization of 2,2,2-trifluoroethyl α-fluoroacrylate and 2-(trifluoromethyl)acrylic acid

摘要: The synthesis of poly(fluoroacrylate)s with tunable wettability and improved adhesion for potential application as functional coatings was achieved via radical copolymerization 2,2,2-trifluoroethyl α-fluoroacrylate (FATRIFE) 2-(trifluoromethyl)acrylic acid (MAF), an adhesion-promoting monomer. These copolymerizations, initiated by tert-butyl peroxypivalate at varying comonomer feed ([FATRIFE]0/[MAF]0) ratios led to a series poly(FATRIFE-co-MAF) copolymers different molar compositions in fair good conversions (32–87%) depending on the MAF content. microstructures synthesized were determined 19F NMR spectroscopy. Even contents higher than 50%, incorporation into lower since does not undergo any homopolymerization under polymerization conditions. reactivity (FATRIFE; MAF) monomer pair also (rFATRIFE = 1.65 ± 0.07 rMAF 0 56 °C) evidencing formation statistical copolymers. Initiation involving highly branched perfluorinated that released ˙CF3 enabled demonstration regioselective attack latter onto CH2 FATRIFE. resulting exhibited various glass transition temperatures (Tgs) their compositions. Tg values increased increasing copolymer. In addition, thermal stability (the temperature 10% weight loss air, Td10%) FATRIFE content copolymer reached 348 °C (for containing 93 mol% FATRIFE). Finally, high both metal substrates hydrophilicity, revealed decrease water contact angle from 107° reference PFATRIFE homopolymer) 81° 42 MAF).