Preparation of Fluorinated Polymer Nanofibers by Polymerization-Induced Liquid-Crystal-Driven Self-assembly
Fluorinated polymers have been widely used in various fields due to their low surface energy,photoelectric properties and biocompatibility.In this paper,poly[2-(dimethylamino)ethyl methacrylate]-b-poly[2-(perfluorooctyl ethyl methacrylate)](PDMAEMAm-b-PFMAn)nanofibers were prepared by photo-initiated polymerization at 50℃.Different from ordinary nanofibers,the surface of the obtained nanofibers has unique bumps and undulations similar to pearl necklaces.The assembly process of pearl-necklace-like nanofibers was revealed through dynamics.The effects of the reaction temperature,the solvent composition,and the polymerization degree of macromolecular chain transfer agent on pearl-necklace-like nanofibers were investigated.The results show that the formation of fluorinated pearl-necklace-like nanofibers based on liquid crystals is related to the equilibrium relationships among the liquid-crystal driving force,the nuclear surface tension,and the interfacial energy between hydrophilic and hydrophobic solvents.
NanofiberFluorinated PolymerPolymerization-Induced Liquid-Crystal-Driven Self-assemblyLiquid-Crystal Driving Force
万方数据
维普
