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A silver containing chitosan fiber having antimicrobial function and preparation method

A technology of chitosan fiber and antibacterial effect is applied in the field of silver-containing chitosan fiber and its preparation, which can solve the problems of reducing antibacterial performance, destroying the appearance of products, turning black, etc., and achieving the effect of controlling the growth of bacteria and having obvious antibacterial effect.

Inactive Publication Date: 2007-04-04
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After adding the carrier containing organic matter, the free silver ions can oxidize the organic matter to black, which reduces the antibacterial performance of the product on the one hand, and destroys the beauty of the product on the other hand

Method used

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  • A silver containing chitosan fiber having antimicrobial function and preparation method
  • A silver containing chitosan fiber having antimicrobial function and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 50 grams of chitosan powder is dissolved in 950 grams of 2% acetic acid aqueous solution, and 0.5 grams of silver zirconium sodium phosphate compound powder (particle diameter less than 1 micron) is added to form a spinning solution after fully stirring, and the solution is placed under pressure A metering pump is used to extrude a spinneret with 30 holes and a hole diameter of 150 microns into a water bath containing 5% NaOH to form filaments, wash and dry to obtain chitosan fibers containing silver ions. The obtained fiber is coated with 75 decitex polyester fiber on the coating machine, and the obtained yarn can be processed into fabric by weaving or knitting, or the fiber can be cut into 5 cm long and then used as a non-woven fabric. The equipment is processed into non-woven fabric, which is processed into gauze for wound treatment after cutting and packaging.

Embodiment 2

[0025] In order to observe the antibacterial properties of the fibers, a certain amount of Escherichia coli was evenly spread on the beef jelly petri dish, and then the chitosan fibers without silver ions and the chitosan fibers containing silver ions were put into them respectively, and cultured at a constant temperature of 37°C for 24 hours. Take out and observe the cell growth on each plate. Figure 1 shows the inhibition zone of chitosan fibers without silver ions, and Figure 2 shows the inhibition zone of chitosan fibers containing silver ions. It can be seen that the chitosan fiber containing silver ions has better antibacterial performance than the chitosan fiber without silver ions.

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Abstract

This invention relates to a silver-bearing crustamine fabric with anti-biotic action and its preparing method, which is composed of 90.0-99.9 percent of crustamine powder in weight and 0.1-10 percent of insoluble silver compounds particles. The invention has great anti-biotic action, and can be used as medical dressing to restrict the bacteria on wound.

Description

Technical field: [0001] The invention relates to the field of materials, in particular to a silver-containing chitosan fiber with antibacterial effect and a preparation method. Background technique: [0002] Wounds are a common condition and their treatment requires the use of a large number of medical dressings. On some wounds with more bleeding and pus, medical dressings can absorb the pus and blood on the wound, protect the wound and promote its healing. [0003] Wounds with a lot of pus and blood provide a good environment for the reproduction and growth of bacteria. Bacteria multiply and grow to infect the wound, thereby slowing down the healing speed of the wound and increasing the pain of the patient. Bacteria can also enter the medical dressing from the pus and blood on the wound, and enter the dirt in the hospital when the dressing is replaced, spread in the ward, and cause infection in the ward in severe cases. [0004] Chitin (also known as chitin, chitin, shel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/00D01F1/10
Inventor 秦益民
Owner JIAXING UNIV
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