A method for rapidly preparing ultrafine porous fibers

Abstract

The invention relates to the field of preparation of superfine fiber materials, and aims at providing a method for rapidly preparing a superfine whole-body porous fiber.The method comprises the steps that ethyecellulose is added into a mixed solvent of ethyl alcohol and water, and stirring is performed at the indoor temperature to obtain a uniform solution; polyvinylpyrrolidone is added into the solution, stirring continues to be performed at the indoor temperature to obtain a transparent spinning solution; the transparent spinning solution is injected into a spinning device for centrifugal spinning, and the superfine whole-body porous fiber is obtained.According to the superfine whole-body porous fiber, the porous characteristic is obvious, and the fiber specific area is larger; no pore forming agent or pore enlarging agent is needed, and residual impurities in the fiber are reduced; the situation that multiple pores are produced or the number of pores is increased through an aftertreatment method is not needed, and the structure and morphology of the fiber are prevented from being damaged.The adopted ethyecellulose raw materials and solvent are easy to obtain, the pressure of adopting synthetic materials is further relieved, and the improvement effect is achieved in the environmental protection aspect; the technological process is simple, and production efficiency is high.

Description

technical field [0001] The invention belongs to the field of preparation of ultrafine fiber materials, and in particular relates to a rapid preparation method of ultrafine whole body porous fibers. Background technique [0002] The special properties endowed by ultrafine fibers, submicron and nanofibers due to the size effect make them have broad application prospects in biomedicine, tissue scaffolds, battery separators, air filtration and sensors, and have attracted attention from various fields. [0003] Although microfibers, submicron and nanofibers have higher specific surface areas, compared with microporous fibers, mesoporous fibers or other porous fibers, the specific surface area is still small. Therefore, it is limited in the fields of catalytic carrier, pollution adsorption, fine filtration, etc., and the effect of fibers with porous structure on cell culture is better than that of fibers with smooth surface. Therefore, the preparation of ultrafine fibers, submicr...

AI Technical Summary

Problems solved by technology

Moreover, the porous fibers prepared by the phase separation method usually only exist on the surface of the fibers, and have little effect on the improvement of the specific surface area of ​​the fibers.

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