Homogeneous Silver Nanoparticle Loaded Polydopamine/Polyethyleneimine-Coated Bacterial Cellulose Nanofibers for Wound Dressing

The research paper discusses the development of a homogeneous silver nanoparticle (AgNP)-loaded polydopamine/polyethyleneimine (PDA/PEI) coated bacterial cellulose (BC) antibacterial dressing. The BC dressing, due to its inherent properties like 3D nanonetwork structure, gas permeability, water absorbency, and biocompatibility, is an ideal candidate for dressing materials. However, it lacks intrinsic bactericidal performance. To overcome this, the researchers loaded it with antimicrobial agents. The PDA/PEI coating, approximately 4 nm thick, was uniformly attached to the BC fibers, improving its mechanical properties and stability in strongly acidic and alkaline environments. The dressing also demonstrated excellent antibacterial activities and acceptable cytocompatibility, making it suitable for treating infected wounds.