Solvent-resistant hydrophilic stereocomplex polylactic acid oil-water separation membrane and preparation method thereof

The invention belongs to the technical field of oil-water separation materials, and discloses a solvent-resistant hydrophilic stereocomplex polylactic acid oil-water separation membrane and a preparation method thereof. The preparation method specifically comprises the following steps: polymerizing biodegradable poly-L-lactic acid (PLLA) and poly-D-lactic acid (PDLA) through a solution method, then carrying out electrostatic spinning to obtain a stereocomplex polylactic acid (sc-PLA) nanofiber membrane, and carrying out phase separation treatment on the sc-PLA membrane by using cellulose diacetate (CDA) and silicon dioxide (SiO2). The solvent-resistant hydrophilic sc-PLA membrane material prepared by the invention has the characteristics of multiple pores, high specific surface area and nanoscale diameter; meanwhile, the hydrophilic sc-PLA film has excellent mechanical performance and good solvent stability, and the modified sc-PLA film can be completely biodegraded and is an environment-friendly material. 本发