▎ 摘　　要

NOVELTY - Electrospun polymer nanofibrous membrane having a high filtration efficiency comprises polyvinylidene fluoride, one or more Tecophilic (RTM: thermoplastic polyurethanes), or a blend of polyvinylidene fluoride and one or more Tecophilic (RTM: thermoplastic polyurethanes), where the membrane is treated with one or more anti-pathogenic agents. USE - Electrospun polymer nanofibrous membrane having a high filtration efficiency. ADVANTAGE - The electrospun polymer nanofibrous membrane provides high filtering efficiency and excellent porosity. The membrane may be treated with one or more antimicrobial or antiviral agents from the group consisting of graphene, nanoparticles, nanocomposites, multivalent metallic ions, and medicinal or other extracts from natural products. The treatment may preferably be a coating of one or more antiviral agents on the surface of the membrane. The membrane may additionally or alternatively be impregnated with one or more metal-organic frameworks (MOFs). The MOFs may provide filtration of chemical warfare agents (CWAs) and other toxic chemical agents and, may also provide additional or alternate filtration of small particulates and pathogens. The membrane may preferably have a high filtering efficiency. The porosity of the membrane may preferably be sufficient to provide breathability characteristics suitable for use as a facemask or respirator. The electrospun is suitable for use in making facemasks and respirators that are highly resistant to infectious pathogens and/or other small particulates and have a filtering efficiency of at least 95-99.5%, maybe capable of intercepting and exterminating infectious pathogens on its surfaces.