Synthesis and surface characterization of an amphiphilic fluorinated copolymer via emulsifier-free emulsion polymerization of RAFT

摘要

The hydrophobic monomer dodecafluoroheptyl methacrylate has been copolymerized with hydrophilic monomer methacrylic acid in aqueous solution without any additional emulsifier used via a two-step polymerization process of RAFT.The FTIR and GPC results indicated that amphiphilic copolymers with a narrow molecular weight distribution and well-defined blocks have been synthesized successfully.And the copolymers are likely to form steady micelles in the emulsion.Indicated by TEM,it is clear that micelles with a diameter of 70-120 nm have been formed.Despite a content of 22 wt% of hydrophilic carboxyl,films formed by casting the emulsion onto the baseplate can be hydrophobic after heating treatment.