Synthesis and properties of core-shell fluorosilicone-containing acrylate latexes

The core-shell silicon-containing fluorinated acrylate latex was obtained via semi-continuous seed emulsion polymerization in which butyl acrylate (BA) served as the core, methyl methylacrylate (MMA), methyl dodecafluorinacrylate (DFHMA in commercial name), 3-methacryloxypropyltrimethoxysilane (MPTMS) and methyltrimethoxysilane (MTMS) (BA/MMA/DFHMA MPTMS/MTMS) served as the shell of copolymer. FTIR, SEM-EDX, and DSC were used not only to analyze the properties of the latexes and films, but also to investigate the effect of DFHMA and MPTMS/MTMS content on the latexes and films. TEM was employed for characterizing the morphology structure and the particle size of the core-shell latex. The results indicate that the copolymers presented uniform spherical core-shell partials with 20-30 nm in diameter, the content of F and Si element on the surface of films have a great effect on the characteristics of the films, and when m(DFHMA)/m(MPTMS + MTMS) = 3/1, the film shows much more favorable characteristics both in latex and in film.