Coaxial liquid jet spinning structural color fiber membrane and preparation method thereof

The invention discloses a coaxial liquid jet spinning structural color fiber membrane and a preparation method thereof.The structural color fiber membrane is obtained through coaxial liquid jet spinning formed by a shell layer solution and a core layer solution, the shell layer solution is SiO2 microsphere dispersion liquid, the core layer solution is PEO polymer solution, the polymer solution is refined into fibers under traction and stretching of high-speed air flow, and the fibers are formed through spinning. The microsphere dispersion liquid is attached to the fiber in the process, and the microspheres are induced to be self-assembled under the action of capillary force generated by volatilization of a solvent in the microsphere dispersion liquid and are orderly arranged on the surface of the fiber. Coaxial liquid jet spinning is adopted, when shell microsphere dispersion liquid is pulled and stretched by high-speed airflow, the interface of inner and outer layer solutions generates strong shear stress, a