Silver-containing hydrogel type alginate fiber and preparation method thereof

Abstract

The invention discloses a silver-containing hydrogel type alginate fiber and a preparation method thereof. The method comprises the following steps that (1) sulfadiazine sodium and sodium alginate are dissolved in water together to obtain a mixed solution, and the obtained mixed solution is vacuumized and defoamed to obtain a solution A; (2) a silver nitrate solution is added into the solution A, and is kept standing for reaction to obtain a mixed spinning solution containing silver sulfadiazine with antibacterial property; (3) the mixed spinning solution is subjected to wet spinning in a coagulating bath, calcium alginate nascent fibers are obtained, and the coagulating bath is a calcium chloride aqueous solution; (4) sodium alginate is dissolved in water to prepare a sodium alginate aqueous solution; (5) the calcium alginate nascent fiber is immersed into a sodium alginate aqueous solution, and hydrogel type alginate fiber is formed through reaction; (6) the fiber moisture is squeezed, and soaking with an ethanol water solution, and the moisture is squeezed again; and (7) the fiber is soaked in a sodium chloride aqueous solution, and and dried to constant weight to obtain a target product. The method can avoid the problem of fiber blackening caused by addition of silver ions.

Description

technical field [0001] The invention belongs to the technical field of fiber manufacture, and relates to a silver-containing hydrogel type alginate fiber and a preparation method thereof. Background technique [0002] Sodium alginate is a polysaccharide extracted from seaweed plants. It is derived from marine algae and is composed of β-D-mannuronic acid (M) and α-L-guluronic acid (G). Block linear polymers can be quickly dissolved in water and have many excellent properties, such as: non-toxicity, hydrophilicity, biocompatibility, biodegradability and low price, etc., so they are widely used in biomedicine field. Using sodium alginate as a raw material, fiber materials that retain the properties of the raw material can be prepared by spinning technology and equipment, and have been applied to technical fields such as wound dressings. [0003] In order to make alginate fibers better used in the field of biomedicine, researchers have tried to add antibacterial substances to ...

AI Technical Summary

Problems solved by technology

[0003] In order to make alginate fibers better used in the field of biomedicine, researchers have tried to add antibacterial substances to alginate fibers to increase their antibacterial properties. For example, the preparation of silver-containing alginate composite fibers can be used to a certain extent Provide the antibacterial properties of the material, but the doping of antibacterial substances will affect the viscosity of the spinning solution, thereby affecting its spinnability, which brings difficulties for the continuous and stable preparation of uniform fiber materials, and the addition of silver ions will also bring fiber The problem of blackening affects the shape and use effect of the finished product

In addition, the existing alginate fibers also have disadvantages such as low strength and insufficient moisture absorption and water holding properties.