Synthesis, Characterization and Properties of Amphiphilic Fluorine-Containing Copolymer

摘要

A series of amphiphilic fluorine-containing copolymers PAMDF were synthesized from varying amounts of acrylamide (AM) and diallylamine derivatives (DF) with a fluorinated side chain via solution copolymerization. The diallylamine derivatives monomer was synthesized by reacting perfluorohexyl ethyl acrylate (PFHEA) with diallylamine to introduce fluorinated side-chains and rigid plane structure with strong fluorescence property into the copolymers. The amphiphilic fluorine-containing copolymers were characterized by ~1H NMR, ~(19)F NMR, Elemental analyze and static light scattering measurements. The basic physico-chemical properties of the copolymers in an aqueous medium were investigated by means of surface tension, dynamic laser light scattering and resonance light scattering. The surface tension measurement indicated that the surface activity of the copolymers in aqueous solution increased with increasing the diallylamine derivatives content of amphiphilic copolymers. Dynamic laser light scattering measurement revealed the hydrophobic association behaviour of copolymers in aqueous solutions depended on the copolymer concentration the content of hydrophobic diallylamine derivatives side chains and the addition of salt. The resonance light scattering results demonstrated the critical aggregation concentration of the copolymers was 0.01-0.05 mg mL~(-1) in aqueous solutions.