Bio-based air purification nanofiber membrane for mask and preparation method

Abstract

The invention belongs to the technical field of medical sanitary materials, and particularly relates to a bio-based air purification nanofiber membrane for a mask and a preparation method. The preparation method comprises the steps of preparing a core layer solution or a shell layer solution from rice hull powder, graphene-nano cerium dioxide composite powder, polyvinyl alcohol and a polygonum cuspidatum root extract as raw materials, and then preparing the nanofiber membrane through coaxial electrostatic spinning, wherein when the shell layer solution is prepared, the polyvinyl alcohol is dissolved in water to prepare an aqueous solution, then the esterified rice hull powder, the graphene-nano cerium dioxide composite powder and the polygonum cuspidatum root extract are dispersed in methanol to prepare a methanol solution, and finally the aqueous solution and the methanol solution are stirred and mixed uniformly; and when the core layer solution is prepared, hexadecyl trimethyl ammonium bromide is dissolved in the methanol firstly, then the rice hull powder is added, and ultrasonic dispersion is conducted to be uniform. The obtained nanofiber membrane has a relatively good air purification effect and can be used for mask manufacturing, and the manufactured mask is good in protection effect, good in use comfort and good in mechanical property.

Description

technical field [0001] The invention belongs to the technical field of medical sanitary materials. More specifically, it relates to a bio-based air-purifying nanofiber membrane for masks and a preparation method thereof. Background technique [0002] With the rapid development of industrialization, global air pollution is becoming more and more serious, and smog is a common pollution phenomenon at present. Studies have shown that the concentration of PM2.5 particles has a non-negligible relationship with the morbidity and mortality of respiratory system and cardiopulmonary diseases. In recent years, people have paid more and more attention to self-protection. Masks are the most common personal hygiene protective equipment. They are powered by human respiration to purify the atmospheric environment to meet the human body's demand for clean air. [0003] For masks, the filtration efficiency of the fiber filter layer determines the use effect of the mask, while the air resist...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to overcome the deficiencies and deficiencies of existing masks made of nanofibers such as protective effect, use comfort and mechanical properties, and to provide a bio-based air-purifying nanofiber film for masks and Preparation

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