Abstract:The synthesis and characterization of emulsion possessing core-shell structure and containing short-chain fluorinated acrylate were studied in this paper. A series of emulsion possessing core-shell structure and containing fluorinated acrylate copolymer in shell was synthesized via a multi- stepped seed emulsion polymerization, and meanwhile, by using the copolymer of methyl meth acrylate(MMA) with butyl acrylate(BA) as the core and the copolymer of 2-(perfluorinated hexyl)ethyl methacrylate ( FMA6) with acrylate linking various length of n-alkyl chain (n=4, 8, 12, 16 and 18, respectively)as the shell. The effects of both the content of the fluorinated monomers and the length of n-alkyl chain of acrylate in the shell on oil and waterproof performances were especially investigated, based on a systematical optimization of process conditions. The obtained products were then characterized and analyzed. The results showed that the emulsion with w(FMA6)=8.5% and methyl hexadecyl methacrylate rich in shell could make the latex film possessing the best hydrophobic and oleophobic performance. The contact angle of the film with water was 124.67°and methylene diiodide was 112.76°. The characterization results of FTIR, TEM and DSC/TGA indicated that the prepared emulsion containing fluorinated acrylate copolymers showed the typical core-shell structure. The synthesized polymer emulsion has two glass transition temperatures(Tg1=-18.87℃and Tg2=32.08℃), indicating their decomposition temperature increased by 20℃.Thereout, the latex film made by short-chain fluorinated acrylate emulsion displayed excellent oil and waterproof performances, and thermal stability .