Traditional Chinese medicine composite antiviral multifunctional degradable polylactic acid fiber and preparation method thereof

Abstract

The invention belongs to the field of functional fiber materials, and discloses a traditional Chinese medicine composite antiviral multifunctional degradable polylactic acid fiber and a preparation method thereof. The preparation method comprises the following steps of fermenting a starch fermentation raw material to extract lactic acid, performing dehydration condensation to obtain a lactic acid prepolymer, adding the lactic acid prepolymer, functional nanoparticles and a catalyst into an extruder, performing melt mixing polycondensation to obtain functional polylactic acid, and performing spinning molding to obtain a product. The functional nanoparticles are obtained by adsorbing traditional Chinese medicine antiviral components by an inorganic nano powder material subjected to surface modification by porous silicon dioxide and a silane coupling agent. Functional modification of the polylactic acid fiber and upstream fiber polymerization are effectively coupled, so that the process steps are remarkably simplified, the production energy consumption is reduced, and better mixing and dispersing effects and stability are achieved. Meanwhile, an inorganic antibacterial health-care function and a traditional Chinese medicine antiviral function are integrated into the same particle, so that the antibacterial, antiviral and health-care functions can be played at the same time. The obtained functional fiber has the advantages of environmental protection, degradability and cyclic regeneration.

Description

technical field [0001] The invention belongs to the field of functional fiber materials, and in particular relates to a traditional Chinese medicine composite anti-virus multifunctional degradable polylactic acid fiber and a preparation method thereof. Background technique [0002] Polylactic acid fiber is made from starch-containing agricultural products such as corn, wheat, and sugar beet. After fermentation to generate lactic acid, it is made by polycondensation and melt spinning. . Polylactic acid fiber is a kind of synthetic fiber whose raw material can be planted, is easy to plant, and the waste can be degraded naturally in nature. It can be decomposed into carbon dioxide and water by microorganisms in soil or seawater. When burned, it will not emit poisonous gas and cause pollution. It is a sustainable ecological fiber. The fabric has good handle and drapability, anti-ultraviolet radiation, low flammability and excellent processing performance. It is suitable for var...

AI Technical Summary

Problems solved by technology

The problems of this process are: 1. The polymer fiber material first needs to be polymerized, separated, and processed into fiber slices, and then the fiber slices and functional nanoparticles are melt-mixed and extruded. The fiber slices have undergone two molding processes, which significantly increases process steps and energy consumption

2. It is difficult to mix and disperse the formed fiber slices evenly in the process of melting and mixing with functional nanoparticles, so that the effect of functional nanoparticles cannot be effectively exerted

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