Research on Surface Properties of Fluorinated Acrylate Copolymer Latex

Stable fluoroacrylate ternary copolymer emulsions were made by miniemulsion polymerization with fluoroacrylate(FA),butylacrylate(BA),methyl methylacrylate(MMA) as the monomers and lauryl sodium sulfate(SDS),fatty alcohol-polyoxyethylene ether(AEO-9)as emulsifier.The relations between fluorinated acrylate polymer emulsion structure and fine emulsion membrane surface properties were discussed,respectively from the three aspects as follows: crystallization、glass transition temperature and blending emulsion polymerization.The fluoropolymer emulsion membrane structure and thermal properties were measured by means of differential scanning calorimeter(DSC)、thermogravimetric analysis(TGA) and X-ray crystal diffraction(XRD) techniques.The surface property of films was studied by Wilhelmy method.The results showed that the crystallization of polymer can strengthen the surface performance of emulsion membrane.The surface free energies of copolymer films decrease with the Tg of copolymer increasing,and the polymer emulsion membranes are less hydrophobic and oleophobic.Usingemulsion blendingmethods tomodify fluorinated acrylate,the blending emulsion film has excellent surface properties with the same ratio of fluoride monomer.