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Preparation method of fibrilia antibacterial functional material

A functional material and technology of hemp fiber, applied in the field of antibacterial, can solve the problems of loss of antibacterial properties of hemp fiber, loss of antibacterial components, and inability to meet the antibacterial requirements of fibers

Active Publication Date: 2021-10-29
INST OF BAST FIBER CROPS CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large amount of colloid contained in the bast fiber affects its processing and use. The hemp fiber for textile must go through degumming, bleaching, combing and other processing processes. Loss of antibacterial properties, unable to meet human antibacterial needs for fibers

Method used

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  • Preparation method of fibrilia antibacterial functional material
  • Preparation method of fibrilia antibacterial functional material
  • Preparation method of fibrilia antibacterial functional material

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preparation example Construction

[0021] The invention provides a preparation method of hemp fiber antibacterial functional material, comprising:

[0022] Soak the hemp fiber in the aqueous solution of tannic acid to carry out the first reaction to obtain the pre-modified hemp fiber;

[0023] The premodified hemp fiber is subjected to a second reaction with metal ions and organic amines to obtain the antibacterial functional material of hemp fiber.

[0024] figure 1 It is the flow chart of preparing hemp fiber antibacterial functional material for the embodiment of the present invention.

[0025] In the present invention, the hemp fiber is an industrial hemp fiber that can be used for spinning after degumming, which can be purchased from the market, such as the products provided by Hunan Huasheng Co., Ltd. can be used.

[0026] In the present invention, the fiber body length of the hemp fiber is preferably ≥ 23 mm, the fiber count is preferably ≥ 1500 Nm, and the fiber breaking length is preferably ≥ 26 Km. ...

Embodiment 1

[0057] Prepare 20 mL of tannic acid (TA) aqueous solution with a mass concentration of 3%, add 0.2 g of industrial hemp fiber, and after the fiber is fully swollen, put it into a constant temperature water bath shaking box, shake at 50 ° C and 180 rpm for 6 hours;

[0058] Then the above reaction system was added dropwise under the condition of ultrasonic radiation containing FeCl 3 and triethylenetetramine (FeCl 3 and the molar concentration of triethylenetetramine in aqueous solution are 0.15mol / L) aqueous solution control TA, Fe 3+ The molar ratio with triethylenetetramine is 1:1:1, and the ultrasonic reaction is 30min under the condition of 40kHz;

[0059] After the reaction, cool the reaction system to room temperature, remove the fibers, wash with ethanol to remove unreacted reagents, then wash the fibers with distilled water, and dry them in an oven at 50°C to constant weight.

Embodiment 2

[0061] Prepare 20 mL of tannic acid aqueous solution with a mass concentration of 2%, add 0.2 g of industrial hemp fiber, and after the fiber is fully swollen, place it at room temperature for 24 hours;

[0062] Under the condition of ultrasonic radiation, dropwise add CuSO 4 and an aqueous solution of ethylenediamine (CuSO 4 and the molar concentrations of ethylenediamine in aqueous solution are 0.2mol / L and 0.4mol / L respectively), adjust TA, Cu 2+ The molar ratio of ethylenediamine and ethylenediamine is 1:2:4, and the ultrasonic reaction is performed at 40kHz for 10min;

[0063] After the reaction, the reaction system was cooled to room temperature, the fiber was taken out, washed with ethanol to remove unreacted reagents, then washed with distilled water, and dried in an oven at 50°C until constant weight.

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Abstract

The invention provides a preparation method of a fibrilia antibacterial functional material. The method comprises the following steps of soaking fibrilia in a tannic acid aqueous solution for a first reaction to obtain pre-modified fibrilia; and carrying out a second reaction on the pre-modified fibrilia, metal ions and organic amine to obtain the fibrilia antibacterial functional material. According to the invention, firstly, tannic acid is grafted on the surface of the fibrilia through hydrogen-bond interaction; after primary grafting of the tannic acid is completed, an aqueous solution of the metal ions and the organic amine is dropwise added under the ultrasonic action for further crosslinking, so that chelating bonds are formed between free phenolic hydroxyl groups of the tannic acid and the metal ions as well as between the metal ions and the organic amine, and the tannic acid is more firmly and uniformly grafted on the surface of the fibrilia; and due to the introduction of the organic amine, the distance between tannic acid and metal ion complexes is increased, uniform and firm grafting on the surface of the fibrilia is realized, and the application environment adaptability of the tannic acid grafted fibrilia is enhanced.

Description

technical field [0001] The invention belongs to the field of antibacterial technology, and in particular relates to a preparation method of hemp fiber antibacterial functional material. Background technique [0002] Bacterial infection has become one of the most serious risks in public health, especially drug-resistant bacterial infection makes conventional antibiotics less effective. Pharmaceutical companies are gradually losing interest in antibiotic research and development due to the expensive, short lifecycle, time-consuming and high risk of antibiotic development, coupled with the significant reduction in antimicrobial drug approvals over the past few decades, has aroused great concern worldwide , the problem of bacterial infection has once again become one of the challenges of human health. Human skin is a good nutrient base, and various textiles are excellent habitats for bacteria and the source of disease transmission. Antibacterial fibers, as important functional ...

Claims

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Application Information

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IPC IPC(8): D06M13/238D06M10/08D06M10/06D06M101/06
CPCD06M13/238D06M10/06D06M10/08D06M16/00D06M2101/06
Inventor 常丽段文杰赵立宁李德芳黄思齐陈安国李建军唐慧娟潘根邓勇张翠萍
Owner INST OF BAST FIBER CROPS CHINESE ACADEMY OF AGRI SCI
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