Abstract: The synthesis and characterization of fluorinated acrylate copolymer with core-shell structure was carried out in this paper by the starved semi-continuous seed emulsion polymerization. n-Butyl acrylate(BA) and methyl methacrylate(MMA) served as the non-fluorinated monomers. Trifluoro-ethyl methacrylate(TFEM), hexafluoro-butyl methacrylate(HFBM) and dodecafluoro-heptyl methacrylate(DFHM) served as the fluorinated monomers respectively. The analysis results of FTIR, ¹H NMR, TEM as well as DSC indicated that the prepared fluorinated acrylate copolymers were the typical core-shell structure. DSC, TGA, SEM-BSE and SEM-EDX characterizing results displayed that the core-shell copolymer presented an excellent thermal stability and film properties. Fluorinated monomers with a long or short fluorinated side-chain in the copolymer made trivial influence on the thermal stability. However, the long fluorinated side-chain preferentially migrated to the surface during the film formation and benefited the properties of the fluorinated acrylate copolymer.

Key words: Fluorinated copolymer, Starved semi-continuous seed emulsion polymerization, Coreshell structure, Fluorinated side-chain