A traditional Chinese medicine compound anti-virus multifunctional degradable polylactic acid fiber and its preparation method

Abstract

The invention belongs to the field of functional fiber materials, and discloses a traditional Chinese medicine composite anti-virus multifunctional degradable polylactic acid fiber and a preparation method thereof. The starch fermentation raw material is fermented and extracted to obtain lactic acid, and then dehydrated and condensed to obtain a lactic acid prepolymer, and then added to an extruder with functional nanoparticles and a catalyst to melt, mix and polycondense to obtain functional polylactic acid, which is then spun and formed to obtain a product. The functional nanoparticles are obtained by absorbing the antiviral components of traditional Chinese medicine by adopting porous silicon dioxide and inorganic nanometer powder materials surface-modified by a silane coupling agent. The invention effectively couples the functional modification of the polylactic acid fiber with the upstream fiber polymerization, significantly simplifies the process steps and reduces production energy consumption, and has better mixing and dispersing effect and stability. At the same time, the inorganic antibacterial health function and the antiviral function of traditional Chinese medicine are integrated into the same particle, which can simultaneously exert antibacterial, antiviral and health care functions. The obtained functional fiber has the advantages of environmental protection, degradability and recycling.

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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