Silver-carried alginic acid fiber and preparation method thereof

Abstract

The invention relates to a medical disinfecting and sterilizing dressing raw material and a preparation method thereof, in particular to a silver-carried alginic acid fiber and a preparation method thereof. The preparation method comprises the following steps of: impregnating the alginic acid fiber in a water solution of nano silver with the concentration of 20-1000 ug / L, wherein the bath ratio is 1:10-200, and the impregnation time is 2-60 min; than, taking out the silver-carried alginic acid fiber absorbing elementary silver particles in an enrichment method, washing and drying the silver-carried alginic acid fiber through a water solution of organic solvent to obtain an alginic acid fiber with 0.01-4% of silver by weight and having good bulkiness and strong sterilization effect. The preparation method of the alginic acid fiber absorbing silver in an enrichment method provided by the invention has simple and feasible process, safe and nontoxic production process and practical application value.

Description

Technical field [0001] The invention relates to a raw material for a medical disinfection and sterilization dressing and a preparation method thereof, in particular to a silver-loaded alginate fiber and a preparation method thereof. Background technique [0002] Alginate fiber has been widely used in the medical industry as medical gauze, dressing, etc. due to its excellent medical material properties such as high moisture absorption, good oxygen permeability, good biocompatibility, and biodegradable absorption. Alginate fiber medical gauze and dressing have a strong hemostatic effect and can absorb the exudate of the wound in time, but the wound with a lot of exudate is damp and the chance of infection is relatively high. It has antibacterial effect by adding the alginate fiber. High-performance silver ions can make alginic acid medical dressings not only have high hygroscopicity, but also have good antibacterial properties. There are generally two types of silver-loaded algina...

AI Technical Summary

Problems solved by technology

There are generally two types of preparation of silver-loaded alginate fibers: one is added to the alginate fiber spinning solution or coagulation bath, such as adding sulfadiazine sodium and silver nitrate to the alginate fiber spinning solution to make the spinning solution Particles containing silver sulfadiazine, or directly adding silver-containing zirconium phosphate sodium salt nanopowder in the spinning solution, and obtaining silver-loaded alginic acid fibers through silk, such as the document "Preparation method and properties of silver-containing alginic acid fibers" ( [J] Journal of Textile Science, 2005, 7 (2): 126~128), reported that silver nitrate is directly added in the calcium chloride aqueous solution of alginic acid fiber spinning coagulation bath, the method for preparing silver-loaded alginic acid fiber; The second is added during the post-processing of alginate fibers. In the Chinese invention patent "Simple Method for Quickly Adding Silver Ions to Alginate Fibers for Sterilization" (CN101187153), a method for impregnating alginate fibers in carboxymethyl ions containing silver ions is disclosed. Sodium cellulose semi-thick viscous colloid solution, and then dehydrated and dried to make alginate fiber dressings. However, in actual production, alginate fiber dressings are easily hardened and processed unevenly; Chinese invention patent (CN1935268) discloses a nano-silver calcium alginate antibacterial dressing made by directly spraying and drying 0.01-1% nano-silver paste, or dipping and drying 0.1-5% nano-silver paste The method of forming a nano-silver calcium alginate dressing, the raw material used in this method is nano-silver paste, in actual production, the direct spraying method of nano-silver paste also has the problems of easy hardening of the alginate fiber dressing and poor treatment uniformity, while the use of dipping However, it is often necessary to use a higher concentration of nano-silver paste to implement, and there is also the problem of poor uniformity

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