Antibacterial and radiation resistant composite fiber membrane preparing method

Abstract

The invention discloses an antibacterial and radiation resistant composite fiber membrane preparing method, the method comprises the steps of 1, preparation of polymer antibacterial / radiation resistant fiber layer: dissolving polymer A with small molecule solvent, adding antibacterial / radiation resistant dispersion into mixture under stirring, continuing to stir, and preparing antibacterial / radiation resistant nanofibers; 2, preparation of polymer photochromic fiber membrane layer: fully mixing 5-10 parts of mixture with 70-80 parts of polymer B, 0.5-2 parts of antioxidant and 10-15 parts of plasticizer to produce photochromic composite fiber; 3, the fiber layers prepared in steps 1 and 2 are combined to form a membrane. The antibacterial and radiation resistant composite fiber membrane respectively makes antibacterial / radiation resistant fibers and photochromic fiber, the membrane is composited, after the combination of antimicrobial compounds, nano-bamboo charcoal, photochromic complexes and diatomaceous earth / porous carbon, the composite fiber membrane has excellent antibacterial, radiation resistance, formaldehyde scavenging and photochromic properties to meet the needs of multi-functional fiber membrane, and further borden the application.

Description

technical field [0001] The invention relates to the technical field of composite fiber membranes, in particular to a preparation method of an antibacterial and anti-radiation composite fiber membrane. Background technique [0002] Nanofibrous membrane has the advantages of large surface area, high porosity, loose structure, pre-designed composition according to the required function, simulating extracellular matrix, and simple preparation method, and has great application potential in many fields. It has been used in food, medicine, Daily chemicals and other fields have been widely used. In particular, nanofibrous membranes prepared with natural polymers as spinning solutions not only have the above characteristics, but also have excellent biocompatibility, biodegradability and renewability. [0003] The silver-loaded nanoparticle / composite fiber membrane prepared by the prior art has poor biocompatibility, and by-products are produced during the preparation process, which ...

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Problems solved by technology

[0003] The silver-loaded nanoparticle / composite fiber membrane prepared by the prior art has poor biocompatibility, and by-products are produced during the preparation process, causing the structure of the fiber membrane to be destroyed, which limits the application of the antibacterial fiber membrane

Moreover, because nano-silver is granular and the particle size is nano-level, it can only be gathered in specific parts of graphene and cannot be evenly distributed on the surface, thereby affecting the antibacterial effect; on the other hand, nano-silver and graphene cannot be tightly combined (especially When the content of nano-silver particles increases, it is easy to agglomerate), and it is easy to fall off during use, thus affecting the service life and antibacterial effect

At the same time, the existing fiber membranes have a single function, and one fiber membrane cannot meet various needs. Often, the fiber membrane materials with multiple functions are superimposed, but it is difficult to achieve the expected effect.

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