Gold-bearing viscose and preparation method thereof

Abstract

The invention discloses gold-bearing viscose and a preparation method thereof. The preparation method comprises the following steps: dissolving beta-cyclodextrin in a water solution, then adding sodium chloride and hydrogen tetrachloroaurate hydrate, then inserting positive and negative electrodes connected with a direct current power supply in the solution and carrying out high speed stirring, thus preparing a nanogold solution; putting cleaned viscose in the nanogold solution to undergo dipping treatment, thus preparing the gold-bearing viscose. The method is simple in process, low in impurity content and firm in bonding between nanogold and the viscose. The gold-bearing viscose has excellent antibacterial properties.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a gold-loaded viscose fiber and a preparation method thereof. Background technique [0002] Clinically, wounds are susceptible to infection and difficult to heal, which is caused by the rapid reproduction of pathogens such as Staphylococcus aureus, Candida albicans, and Escherichia coli in a warm and humid environment on the surface of the wound. To control wound bacterial growth and prevent wound infection, a variety of antimicrobial materials are commonly used to assist in controlling hemostasis, protect wounds, reduce infection, absorb secretions, maintain body temperature, and promote wound healing. [0003] Currently used mainly nano-silver antibacterial materials, such as the invention patent "Preparation method of a polysaccharide nano-silver colloidal solution" discloses a method of using polydextrose aqueous solution to prepare nano-silver an...

AI Technical Summary

Problems solved by technology

[0004] 1. As the main raw material for preparing silver-loaded antibacterial dressings, the preparation method of nano-silver solution is complicated, and it is often necessary to add suitable reducing agents, stabilizers and dispersants. Even so, the agglomeration of nano-silver is still difficult to control, and the particles of nano-silver uneven size;

[0005] 2. During the processing of traditional nano-silver solutions used in medical dressings, the affinity between nano-silver particles and fiber materials is weak, and they often only rely on drying for fixation or need to select appropriate cross-linking agents and adhesives to fix nano-silver antibacterial agents on the surface. However, the application of these stabilizers, dispersants, cross-linking agents and adhesives will not only affect the feel and air permeability of medical dressings, but also bring potential application safety problems

[0007] 4. Nano silver is prone to oxidation and discoloration during use, which will affect the use effect

[0008] 5. Some people are prone to allergies to silver antibacterial materials

[0009] At present, there is no report on the related technology of gold-loaded viscose fiber, and the development of gold-loaded viscose fiber will expand the application range of nano-antibacterial materials

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