Novel composite nanofiber membrane as well as preparation method and application thereof

Abstract

The invention relates to a nanofiber membrane and particularly relates to a novel composite nanofiber membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) dissolving any one of polyvinyl alcohol, polylactic acid and regenerated silk fibroin in an organic solvent to prepare a spinning solution with the mass fraction of 5-20 percent; (2) adding polyphenol substances to the spinning solution, and uniformly stirring to obtain a mixed spinning solution which accounts for 1-7 percent of the total mass of the polyphenol substances and the organic solvent, wherein the polyphenol substances are one or more of vegetable tannin, apple polyphenol and grape polyphenol; (3) carrying out ultrasonic treatment on the mixed spinning solution for 1-600 minutes; and (4) carrying out electrostatic spinning on the mixed spinning solution and collecting to obtain the required composite nanofiber membrane. After subjected to electrostatic spinning, the composite nanofiber membrane is smooth in surface, continuous and uniform, has the diameter of between 100nm and 800nm and can be applied to the fields of medical dressing, makeup facial masks, tea bags, controlled release of targeted drugs, food preservation and sewage purification.

Description

technical field

[0001] The invention relates to a nanofiber membrane, in particular to a novel composite nanofiber membrane and its preparation method and application. Background technique

[0002] Combining organic small molecular substances with fiber polymer matrix by means of solution blending, melt blending, etc. is a modification method of nanofibers. The patent with the publication number CN101638830 announced a preparation method of a nanofiber membrane on June 15, 2011, using chitin and curcumin as raw materials to make a nanofiber membrane for antibacterial. New raw materials have been found for the production of nanofibrous membranes with new functions, but their functions are single and their uses are limited. In order for nanofibrous membranes to play a more important role in more fields, it is necessary to find more versatile raw materials and develop methods suitable for making them into fibrous membranes. Contents of the invention

[0003] One of the obje...

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