Preparation method of collagen fiber/silver chloride hybrid material

Abstract

The present invention discloses a preparation method of a collagen fiber / silver chloride hybrid material. The method is mainly as follows: weighing 2-5 parts by weight of collagen fiber, adding into 200 parts by weight of a silver nitrate solution with the concentration of 2.5% to 4%, stirring for 4 hours, then standing for 12 hours; while stirring, slowly adding dropwise 100 parts by weight of a sodium chloride solution with the concentration of 3.5%, wherein the dropping rate of the sodium chloride solution is controlled in 0.5 drop / sec; after the dropwise addition is complete, standing for 5 minutes, then filtering by suction, and washing with water; and finally, drying in vacuum for 5 to 8 hours at a temperature of 60-80 DEG C to obtain the collagen fiber / silver chloride hybrid material. Through the method, the defects of being high in water absorption, hygroscopic, low in thermal stability, perishable, low in mechanical strength and the like of the collagen fiber can be improved, the antibacterial properties of the material can be greatly enhanced, the scope of application in industry can be broadened; the technology is simple, the reaction is carried out at room temperature in ordinary pressure, device requirements are not critical, and the method is suitable for mass production.

Description

technical field [0001] The invention belongs to the technical field of organic-inorganic hybrid materials, and in particular relates to a preparation method of a collagen fiber / silver chloride hybrid material. Background technique [0002] Collagen fiber is the largest biomass resource in the world, and collagen fiber accounts for more than 90% of the large amount of waste leather produced by the tanning industry. Recycling waste leather, treating it in a suitable way and applying it in various industries can not only effectively control the environment, but also create huge economic benefits. Collagen fibers are white short fibrous solids with good biodegradability, biocompatibility, low antigenicity, low cytotoxicity, etc., and can be used in food, medicine, cosmetics and other fields; the surface of collagen fibers is rich in -OH, -COOH, -CONH 2 , -NH 2 And other active groups, so it also has a strong application potential in the fields of separation engineering, texti...

AI Technical Summary

Problems solved by technology

However, collagen fiber has defects such as strong water absorption, easy to be eroded by microorganisms and chemicals, poor thermal stability, and flammability; collagen fiber is mainly composed of collagen, which has the general properties of protein and is easily eroded by mold and bacteria; therefore, The application of collagen fibers in industry is relatively limited