Synthesis and characterization of core-shell fluoroacrylate copolymer latex

摘要

Core-shell fluoroacrylate copolymer latex was synthesized via semi-continuous seed emulsion polymerization. Ethyl acrylate (EA) was used for the core, and methyl methacrylate (MMA), butyl acrylate (BA), methacrylate acid (MAA), and hexafluorobutyl methacrylate (HFBM) was used to constitute the shell. The yielded latex was analyzed by Fourier transform infrared (FTIR). The particle size and structure were determined by particle size distribution (PSD) and differential scanning calorimeter (DSC), respectively. The results showed that latex particle had core-shell structure, and fluorine have been introduced into copolymer. Zeta potential of the latex and contact angles of the cast film indicated that emulsion stability and film hydrophobicity increased with the content of the fluoroacrylate monomer. Fluorine tended to locate on surface of cast film of the copolymer latex, which resulted in that hydrophobicity of one side was higher than the other side.