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Multilayer Cellular Membranes for Filtration Applications

详细技术说明

Process for producing coextruded, multilayered polymer films that are delaminated or separated to form rectangular nanofibers and fibrous substrates. These nano-fiber structures may be used as fibrou

*Abstract

Process for producing coextruded, multilayered polymer films that are delaminated or separated to form rectangular nanofibers and fibrous substrates. These nano-fiber structures may be used as fibrous substrates, separation membranes, and/or filters. The multilayered polymer films can be formed using solvent-free coextrusion and multiplying processes and provide fibers with higher surface area-to-volume than electrospun fibers with the same cross-sectional area as well as separation membranes and filters with enhanced surface area and mechanical properties compared commercially available separation membranes and filters. The resulting materials possess very tightly controlled pore size of less than a micron and a permeability, mechanical strength, puncture strength, tensile strength, wettability, and thermal capabilities that can bereadily tailored for specific applications. In some embodiments, the nanofiber separation membrane can advantageously have enhanced mechanical properties and reduced pore size and thicknesses compared to conventional nonwoven separators. The thickness and pore structure controls the mechanical properties of the separator.

国家/地区

美国