4 results about "Electrospun nanofiber" patented technology

This invention belongs to the field of environmental engineering materials technology and discloses a method for preparing an antibiotic-encapsulated nanofiber membrane biocarrier for the domestication of specific microbial populations. The aim is to achieve the domestication and control of specific microbial populations through the combination of antibiotic encapsulation and nanofiber membranes. This antibiotic-encapsulated nanofiber membrane biocarrier utilizes the high specific surface area and good permeability of the porous, expanded structure of emulsion electrospun nanofiber membranes to effectively immobilize antibiotics and achieve precise regulation of microbial populations through a slow release mechanism. Simultaneously, the microstructure of the nanofiber membrane provides a suitable growth environment for microorganisms, promoting the proliferation and domestication of specific populations. This invention not only improves the efficiency of microbial population domestication but also reduces the amount of antibiotics used, resulting in both environmental and economic benefits. The preparation process of this carrier is simple and convenient, suitable for wastewater treatment, bio-fermentation, and other fields, and has broad application prospects.

The application provides a nanofiber-based aerogel and a preparation method and application thereof, relates to the technical field of aerogels, and the preparation method of the nanofiber-based aerogel comprises the following steps: electrospinning a polymer-containing spinning solution to obtain a nanofiber membrane; performing mechanical dispersion treatment on the nanofiber membrane to obtain a nanofiber suspension; and after mixing the nanofiber suspension with a functional nanomaterial, performing solidification to obtain the nanofiber-based aerogel. The electrospun nanofiber is peeled off, cut and then reassembled into a three-dimensional porous block (i.e. an aerogel), which not only retains the advantages of a high specific surface area and connected pores of the nanofiber membrane, but also significantly reduces water flow resistance by constructing a three-dimensional network, and meanwhile, the heat insulation performance is enhanced. The structure can more effectively realize fast water supply and low heat loss, reduce the accumulation of salt on the surface of the material, and thus improve the stability and efficiency of interfacial water evaporation.

This invention belongs to the field of nanomaterials, and particularly relates to an electrospun nanofiber membrane, its preparation method, and its applications. The electrospun nanofiber membrane provided by this invention is prepared by electrospinning a spinning solution containing polyurethane, polyvinylpyrrolidone, and Tb(BA)3phen. By optimizing the composition of the electrospinning solution, especially by doping with the functional material Tb(BA)3phen, this invention enables the membrane material to acquire a large number of triboelectric charge trapping sites, reducing charge dissipation and increasing the accumulation of triboelectric charge; simultaneously, it endows the membrane material with good flexibility, stretchability, and hydrophobicity. The electrospun nanofiber membrane provided by this invention combines excellent flexibility and high triboelectric output performance, showing promising application prospects in the field of triboelectric nanogenerators.

Embodiments include a filter material including an electrospun nanofiber membrane and an active nanomaterial agent incorporated into the electrospun nanofiber membrane, wherein the electrospun nanofiber membrane filters disease-causing agents and the wherein the active nanomaterial agent degrades disease-causing agents. Embodiments further include a face mask and / or respirator including a filter material, wherein the filter material includes an electrospun nanofiber membrane and an active nanomaterial agent incorporated into the electrospun nanofiber membrane, wherein the electrospun nanofiber membrane filters disease-causing agents and the wherein the active nanomaterial agent degrades disease-causing agents.