Method for inhibiting bacteria by polyimide fiber and application of polyimide fiber

Abstract

The invention relates to the field of materials, and particularly discloses a method for inhibiting bacteria through polyimide fibers and application of the polyimide fibers. According to the method, the polyimide fiber textile and the chitosan powder are combined for use, on the premise that the structure of the fiber textile is not changed, the chitosan is used for adsorbing bacteria to the surface of the polyimide fiber textile, escherichia coli and / or methicillin-resistant staphylococcus aureus are / is killed to a large extent, and drug resistance cannot be generated. The invention also finds that when the polyimide fiber textile is combined with the chitosan powder for use, the specific escherichia coli inhibition rate is obviously improved within specific action time.

Description

technical field [0001] The invention relates to the field of materials, in particular to a method and application of polyimide fibers for inhibiting bacteria. Background technique [0002] A large number of clinical studies have shown that a large number of exogenous pathogenic bacteria in soil or dirt are brought into the wound surface by wounding instruments, projectiles, etc. during human trauma. Exogenous pathogenic bacteria enter the patient's body through the wound and cause an inflammatory reaction, which has become the main reason for the third peak of the death of a large number of wounded. A few hours after the injury, before debridement, there are many kinds of bacteria in the patient's wound, and more than 40 kinds can be detected. Blue-positive bacteria, such as Staphylococcus, Bacillus fragilis, etc. Early debridement and delayed suture are still important ways to effectively control the disability and mortality of trauma patients. However, when there is no d...

AI Technical Summary

Problems solved by technology

Its advantage is high safety performance, but the disadvantage is that it is difficult to achieve antibacterial effect through fiber modification, extremely short antibacterial validity period, and poor heat resistance

(2) By adding antibacterial agents (such as zinc oxide, magnesium chloride, silicon dioxide, silver zeolite, etc.) to artificial antibacterial fibers that do not have antibacterial functions, there will be bacterial resistance and accumulation poisoning (such as formaldehyde, phenols, Antibacterial ingredients such as heavy metals) and other shortcomings

(3) Antibacterial materials finished with natural fibers are easy to induce drug resistance of pathogenic bacteria, and there are safety and durability problems

Its core is to improve the non-woven fabric and adsorb chitosan on the fiber. This improvement destroys the inherent characteristics of the fiber to a certain extent, and the adsorption stability of chitosan cannot be guaranteed during use. Guarantee its long-term antibacterial performance, and at the same time, it does not disclose the specific bacteria and bacteria it targets, nor does it quantitatively analyze the relevant antibacterial rate

[0007] In summary, there is a lack of antibacterial application of polyimide to specific bacteria, ensuring that it has good lethality against Escherichia coli and / or methicillin-resistant Staphylococcus aureus within a certain period of time

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