A kind of modified cellulose and its application

Abstract

The invention discloses a modified cellulose and its application. Wherein the modified cellulose is prepared through the following steps: oxidizing the cellulose into 2,3-dicarboxy cellulose, and under the action of heating and dehydrating agent, combining the 2,3-dicarboxy cellulose with (4 ‑vinylphenyl‑4'‑methylenecarboxyphenyl) iodonium-terminated polyvinylpyrrolidone undergoes condensation reaction to obtain modified cellulose. The modified cellulose involved in the invention is applied to fabric washing, color absorption and anti-dyeing, and can effectively resist microorganisms.

Description

technical field [0001] The invention belongs to the field of textile engineering, and in particular relates to a modified cellulose and its application. Background technique [0002] During the washing process of the fabrics that people wear daily, the dyes on the surface of the fabrics will fall off and enter the washing solution. With the agitation of the washing operation, they will transfer to the surface of other fabrics that are washed at the same time, causing the cross-color phenomenon that we see with the naked eye. [0003] At present, the industry has developed a color-absorbing sheet with an anti-cross-color function to avoid the phenomenon of cross-color fabrics when they are mixed and washed. Chinese patent application CN103132276A discloses a viscose fiber non-woven fabric modified with 2,3-epoxypropyltrimethylammonium chloride; A non-woven fabric composed of fibers; Chinese patent application CN107474178 A discloses an acrylate copolymer containing cationic ...

AI Technical Summary

Problems solved by technology

The core idea of ​​the above-mentioned patent application is to load charged ionic groups on a water-insoluble substrate, and adsorb free dye molecules with opposite charges to the substrate through electrostatic adsorption, so that the dye molecules cannot continue to wash. Free movement during the process, so that the above-mentioned cross-color phenomenon cannot be caused

[0004] However, the color-absorbing sheet based on this idea has two serious defects: the first, in the actual washing process, the distance between fabrics is very small, and even often the surfaces between fabrics are tightly attached, while The electrostatic adsorption attached to the above ideas is a passive adsorption method. It acts like a filter. The adsorption can only pass through the dye molecules of the color-absorbing film, but cannot effectively adsorb the dye molecules far away from the color-absorbing film. ; Therefore, the dyes that come off from the fabric are often cross dyed on the closer fabric before being absorbed by the color absorbing sheet

When the color-absorbing sheet absorbs the surfactant instead of the target dye, the color-absorbing ability of the color-absorbing sheet will decrease, reducing its anti-cross-color effect

In addition, the color-absorbing sheet absorbs the surfactant, resulting in a decrease in the concentration of the effective substance of the detergent, which will also reduce the decontamination effect of the detergent.

Third, the existing color-absorbing fiber dissolves and absorbs the dye scavenger on the non-woven fabric, which is a kind of physical adsorption. In the process of production, packaging, and use, the dye scavenger is part of the friction loss, which affects the product effect.

[0005] The anti-cross-color materials currently on the market can only prevent the effect of cross-color, and the effect is single. Therefore, it is necessary to prepare an anti-color cross-link material that can better prevent cross-color and has a better antibacterial effect at the same time.

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