Biodegradable antibacterial fiber and preparation method thereof

Abstract

The invention discloses a preparation method of a biodegradable antibacterial fiber. The preparation method comprises the following steps: (1) weighing dried matrix resin particles, an essential oil antibacterial agent and a lubricant; (2) fully mixing matrix resin, the antibacterial agent and the lubricant by using a high-speed mixer, adding the mixed raw materials into a screw extruder, extruding, cooling in an air bath, and curing into filaments; (3) feeding the cured filaments into a granulator, cutting the filaments into master batches, and drying the master batches in a vacuum drying oven for 12-24 hours; (4) feeding the dried master batches into an extruder, performing high-temperature extrusion through a screw to form a uniform melt, conveying the metered melt to a spinning assembly, spraying the melt from a spinning nozzle, enabling the melt to pass through an air bath with a certain height, entering a coagulating bath containing an antibacterial agent, performing curing forming, winding to obtain pre-oriented fibers, and stretching to obtain the biodegradable antibacterial fiber which is subjected to tensile deformation. The method is simple and efficient, and the prepared fiber has a long-acting, lasting and stable antibacterial effect.

Description

technical field [0001] The invention relates to the field of textile composite materials, in particular to a biodegradable antibacterial fiber and a preparation method thereof. Background technique [0002] Antibacterial fibers have high application value in the preparation of functional antibacterial textiles, functional medical dressings and other fields. Antibacterial fiber materials refer to a class of new functional materials with high performance and high added value developed on the basis of nanofibers, which combine the advantages of both fiber materials and antibacterial materials. Ordinary fiber itself does not have antibacterial ability. Antibacterial fiber can effectively inhibit or kill harmful pathogenic factors such as bacteria, viruses, and fungi from multiplying inside the fiber, thereby reducing the risk of cross-infection and secondary infection of fiber materials on the human body. [0003] Biodegradable materials refer to the degradation caused by the a...

AI Technical Summary

Problems solved by technology

Composite spinning is a composite fiber with a special structure prepared by spinning the spinning stock solution containing antibacterial ingredients and other spinning stock solutions without antibacterial ingredients through a spinneret with a special distribution function, such as skin-core structural fibers, side-by-side structural fibers , inlaid structural fibers, fractal structural fibers, hollow multi-core structural fibers, etc. This method uses less antibacterial agents and has excellent washing resistance, but its weaving process is more complicated and the production cost is high; The solution, paint or resin of the components, the fabric is treated by dipping, padding or coating, and then baked at high temperature or other means, so that the effective antibacterial component is finally fixed on the fiber and endowed with an antibacterial effect. , this method is simple to process and has good antibacterial effect, but its friction resistance and washing resistance are poor, and the antibacterial effect is generally durable; The fiber with antibacterial effect is prepared by melt spinning. The antibacterial fiber prepared by this method not only contains antibacterial components on the surface, but also distributes the antibacterial agent evenly inside the fiber, and can achieve long-lasting, long-lasting and stable through slow outward penetration. Antibacterial effect, is a relatively excellent antibacterial fiber preparation method

[0005] At present, there is no report on the preparation of biodegradable antibacterial fibers by the combination of blend spinning method and finishing method

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