Janus Nanofiber Membranes with Photothermal‐Enhanced Biofluid Drainage and Sterilization for Diabetic Wounds

Abstract Diabetic wounds are difficult to heal, and the key to wound healing is exudate management and effective disinfection. Inspired by the asymmetric wettability of Janus‐structured lotus leaves, herein the study has presented the design of a biomimetic asymmetric Janus membrane that integrates unidirectional biofluid drainage and photothermal‐enhanced evaporation/sterilization capabilities for accelerating diabetic wound healing. This Janus membrane is prepared by electrospinning polyacrylonitrile (PAN) nanofiber membrane containing polydopamine (PDA) on the surface of polypropylene (PP) nonwoven membrane. Such PP/PAN x%PDA Janus membrane enables antigravity “pumping” of the water from the hydrophobic PP…

• NN
  National Natural Science Foundation of China

  Award: 51972026;52161145406
• SA
  Science and Technology Commission of Shanghai Municipality

  Award: 20DZ2254900
• NK
  National Key Research and Development Program of China

  Award: 2021YFA1201304
• FR
  Fundamental Research Funds for the Central Universities

  Award: 2232023D‐03