Preparation of fluorine-containing (meth) acrylate copolymer latex by AGET-ATRP

The emulsion generated by electron transfer atom transfer radical polymerization (AGET-ATRP) of methyl methacrylate (MMA), butyl laureate (BA) and 2, 2, 3, 4, 4, 4-hexafluorobutylacrylate (HFBA) was carried out with ethyl 2-bromoisobutyrate (EBiB) as an initiator and CuBr2/2.2′-bipyridyl (bpy) as an catalyst system, and ascorbic acid used as reducing agents in emulsion. The molecular weight and structure composition of the copolymer were characterized by gel permeation in chromatography(GPC), Fourier transform infrared spectrum(FT-IR) and 1H nuclear magnetic resonance spectrum (1H-NMR) techniques, and researched by dynamics. The research shows that below 75°C, EBiB/CuBr2/AsAc catalysis deoxidization system can effectively control emulsion AGET-ATRP reaction of (MMA-co-BA-co-HFBA). Target product accord with the AGET-ATRP mechanism, molecular structure of synthesized copolymer and process of polymerization can be controlled, distribution of molecular weight is narrow (PDI=1.27~1.47). The excellent water and oil repellency of the copolymer film without coemulsifiers influence were preserved while the amount of fluorinated compounds required in the polymer is reduced considerably.