The Aqueous Solution And Surface Properties Of Fluorinated Copolymers

In this work, our approach was to design and synthesize different copolymers composed of blocks with different solubility properties. The copolymers were synthesized by Reversible Addition-Fragmentation chain Transfer (RAFT) in cyclohexanone with monomers methylmethacrylater (MM A), methacrylic acid (MAA) and perfluoroalkyl ethyl methylacrylate (FEMA). Different hydrophobic surfaces were prepared by solvent evaporation-phase separation process which was simple and easy operating with different solvents such as toluene, tetrahydrofuran, benzotrifluoride and1,1,2-trifluoro-trichloro-ethane (F113). The surface morphologies and hydrophobicity of as-prepared films were determined by copolymer structures and composition. During the process of film formation, the micelles particles gathered to form a rough surface having a micro-nano structure. And the contact angle of surfaces generated by toluene was152.5°, which was significant for the preparation of the cost-effective, low-pollution superhydrophobic surfaces.Meanwhile, we also studied the micellization behavior of the block copolymer in different selective solvent, such as F113, THF, toluene, benzotrifluoride. The micelle-like aggregates morphologies prepared were determined by copolymer structures and composition, the selective solvents, the concentration of solution and other factors.