Preparation of photocatalytic self-cleaning mulberry silk fabrics by using NMMO (N-methylmorpholine N-oxide) aqueous solution

Abstract

The invention provides a method for preparing photocatalytic self-cleaning mulberry silk fabrics by using an NMMO (N-methylmorpholine N-oxide) aqueous solution. The method comprises the following steps: (1) preparing a dissolution solution, adding titanium dioxide nano-particles into the NMMO aqueous solution to obtain a mixture, and violently stirring the mixture to obtain a dissolution solutiondispersed with the titanium dioxide nano-particles; (2) carrying out padding on the mulberry silk fabrics in the dissolution solution obtained in the step (1) for many times; (3) carrying out irradiation on the mulberry silk fabrics subjected to padding by means of infrared rays; (4) dipping the irradiated mulberry silk fabrics in a polyethylene glycol aqueous solution for condensation; then performing washing and drying. The preparation technology disclosed by the invention is simple and feasible, and is low in cost; moreover, strength loss to the mulberry silk fabrics is little, surface performance of mulberry silk fibers is not changed, and the titanium dioxide nano-particles have good fastness on the mulberry silk fabrics; in a preparation process, adhesives are not used, so that the toxicity and the damage are avoided.

Description

technical field [0001] The invention relates to a method for preparing functional fabrics, in particular to a method for preparing photocatalytic self-cleaning silk fabrics by using NMMO aqueous solution. Background technique [0002] Functional fiber materials can be prepared by introducing nanoparticles into textile fibers. At present, there are many preparation methods for introducing nanoparticles into silk fibers, such as: adsorption method, sol-gel method, layer-by-layer assembly method, coating method, feeding method and so on. However, the adsorption method mainly uses the intermolecular van der Waals force and ionic bond force to make the nanoparticles adsorb to the surface of the silk fiber, and the washing fastness is low; the process of the sol-gel method and the layer-by-layer assembly method is long and difficult to control; The coating method is to use adhesives to bond nanoparticles to the surface of silk fibers, which reduces the skin affinity of silk fiber...

AI Technical Summary

Problems solved by technology

However, the adsorption method mainly uses the intermolecular van der Waals force and ionic bond force to make the nanoparticles adsorb to the surface of the silk fiber, and the washing fastness is low; the process of the sol-gel method and the layer-by-layer assembly method is long and difficult to control; The coating method is to use adhesives to bond nanoparticles to the surface of silk fibers, which reduces the skin affinity of silk fibers to the human body; the feeding method is to mix nanoparticles into silkworm food, so that silk fibers are mixed into nanoparticles. The disadvantage is efficiency. very low