A kind of antibacterial regenerated cellulose fiber and preparation method thereof

Abstract

The invention discloses an antibacterial regenerated cellulose fiber and a preparation method thereof, and the antibacterial cellulose fiber contains 0.5 ~ 10wt% of chitosan quaternary ammonium salt, the preparation method comprises the following steps: (1) preparing the chitosan quaternary ammonium salt with deionized water and sodium hydroxide into an antibacterial solution; (2) using cellulose pulp as a raw material to prepare spinning viscose; (3) adding the antibacterial solution to a viscose solution of any step from the yellowing step to before spinning, with the adding amount of the chitosan quaternary ammonium salt being 0.5 ~ 10% of the weight of alpha cellulose in the viscose solution, to obtain an antibacterial spinning viscose solution; and (4) obtaining the antibacterial regenerated cellulose fiber by coagulating bath spinning and drawing molding of the antibacterial spinning viscose solution, and then refining and drying. The antibacterial regenerated cellulose fiber simultaneously has biodegradability, biocompatibility, safety and antibacterial property and other excellent properties, and has better moisture absorption and moisture preservation, crease resistance and softness.

Description

technical field [0001] The invention relates to functional cellulose fibers, in particular to an antibacterial regenerated cellulose fiber using chitosan derivatives as antibacterial agents and its preparation technology. Background technique [0002] Chitosan is the only alkaline polysaccharide that exists in nature and has excellent properties such as biodegradability, biocompatibility, safety and antibacterial properties. Due to its antibacterial properties, chitosan has been widely used in wound sutures, plant seeds, disinfectants, hand sanitizers, etc. Modification of chitosan to obtain quaternary ammonium salt-type chitosan derivative materials is one of the important research directions to improve the antibacterial properties of chitosan, and it is also a hot spot in the research of antibacterial materials. [0003] Among them, chitosan quaternary ammonium salt is an important chitosan derivative, which has the characteristics of non-toxic, antibacterial and antibact...

AI Technical Summary

Problems solved by technology

[0006] The first technical problem to be solved by the present invention is to provide a kind of antibacterial regenerated cellulose fiber using chitosan quaternary ammonium salt as antibacterial modifier for the problem of poor antibacterial performance of antibacterial regenerated cellulose fiber in the prior art , the antibacterial activity and bactericidal activity of the antibacterial cellulose fiber both exceed the national standard

[0007] The second technical problem to be solved by the present invention is: in view of the problems in the prior art that the production process of antibacterial regenerated cellulose fiber is long, the equipment investment is large, the process is complicated, and the prepared antibacterial regenerated cellulose fiber has poor antibacterial property, a kind of antibacterial regenerated cellulose fiber is provided. Preparation method of antibacterial regenerated cellulose fiber with short process flow, simple process and high bacteriostatic activity and bactericidal activity of the prepared antibacterial cellulose fiber

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