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Waterproof permeable material having antibacterial function, and its preparation method

A waterproof, breathable and functional technology, which is applied in the field of clothing and medical care products, can solve the problems of large amount of nano-antibacterial agents, easy to be inhaled by the human body, and potential safety hazards, and achieve good bactericidal and antibacterial effects, broad-spectrum antibacterial properties, and low cost. low effect

Inactive Publication Date: 2012-11-21
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of high cost of using nano-silver in the prior art, large amount of nano-antibacterial agent added, easy to be inhaled by the human body, potential safety hazards, and more layers of antibacterial, waterproof and breathable multi-functional clothing materials currently prepared. problem, provide a waterproof breathable, vapor material with antibacterial function and its preparation method

Method used

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  • Waterproof permeable material having antibacterial function, and its preparation method
  • Waterproof permeable material having antibacterial function, and its preparation method
  • Waterproof permeable material having antibacterial function, and its preparation method

Examples

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Effect test

Embodiment 1

[0037]The invention is a waterproof and air-permeable material with antibacterial function. The material uses a waterproof and air-permeable PTFE film as a base material and lysozyme as an antibacterial agent. The dopamine method is used to modify the surface of one side of the PTFE film and introduce active groups, and then react with lysozyme to form an antibacterial layer on the surface of the film. The structure diagram of the antibacterial material is as follows: Figure 6 shown.

[0038] A preparation method of a waterproof breathable material with antibacterial function, the specific steps are as follows:

[0039] Step 1: In the dopamine solution with a pH of 8.5 and a concentration of 2 mg / ml, add a waterproof and breathable PTFE film with a film thickness of 80 μm and a pore size of about 0.1 μm. The scanning electron microscope picture is as follows figure 1 As shown, take it out after reacting at room temperature for 8 hours, wash it with deionized water, and obtai...

Embodiment 2

[0047] A preparation method of a waterproof breathable material with antibacterial function, the specific steps are as follows:

[0048] Step 1. Add a waterproof and breathable PTFE film to the dopamine solution with a pH of 5.0 and a concentration of 20 mg / ml. The film thickness is 20 μm and the pore size is about 0.5 μm. After reacting at room temperature for 24 hours, take it out and wash it with deionized water. , to obtain a PTFE film after surface modification on one side;

[0049] Step 2: Put the PTFE film obtained in step 1 after the unilateral surface modification into a 0.02M carbonate buffer solution of lysozyme with a pH of 10 and a lysozyme concentration of 100 mg / ml, and react for 12 hours to obtain PTFE antibacterial film.

[0050] The antibacterial rate of the prepared antibacterial material to streptococcus reaches 80%.

Embodiment 3

[0052] A preparation method of a waterproof breathable material with antibacterial function, the specific steps are as follows:

[0053] Step 1. Add a waterproof and breathable PTFE film to the dopamine solution with a pH of 10 and a concentration of 0.001 mg / ml. The film thickness is 40 μm and the pore size is about 0.3 μm. After reacting at room temperature for 2 hours, take it out and wash it with deionized water. Clean, obtain the PTFE film after one side surface modification;

[0054] Step 2: Put the PTFE film obtained in step 1 after the unilateral surface modification into a 0.05M acetate buffer solution of lysozyme with a pH of 5 and a lysozyme concentration of 0.001 mg / ml, and react for 2 hours to obtain PTFE Antibacterial film.

[0055] The antibacterial rate of the prepared antibacterial material against diplococci reaches 60%.

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Abstract

The invention relates to a waterproof permeable material having an antibacterial function, and its preparation method, and belongs to the fields of clothes and medical articles. The preparation method concretely comprises the following steps: 1, carrying out single side surface modification of a waterproof permeable polytetrafluoroethylene (PTFE) film with dopamine as a modifier to increase the hydrophilicity of the surface, induce active groups into the surface, and still maintain the original high waterproof characteristic of the other side surface to obtain a single surface modified PTFE film; and 2, immobilizing a lysozyme antibacterial agent on the surface of the single surface modified PTFE film obtained in step 1 to obtain an antibacterial material which is a PTFE antibacterial film. The preparation method has the advantages of low cost, small addition amount of the antibacterial agent, and no potential safety hazard; and the prepared PTFE antibacterial film simultaneously has the advantages of antibiosis, water proofness, and permeability, integrates multiple functions together, and solves problems without layering.

Description

technical field [0001] The invention relates to a waterproof and breathable material with antibacterial function and a preparation method thereof, belonging to the fields of clothing and medical supplies. Background technique [0002] At present, nano-silver is the most common antibacterial agent used in the field of clothing, as well as nano-inorganic oxides, silane antibacterial agents, bamboo fibers, and chitin. CN201010207754.6 discloses a method for preparing nano-silver antibacterial fabrics by dipping process. The nano-silver fabrics prepared by the invention have high soaping fastness and long-lasting antibacterial properties. After 30 times of washing, the bactericidal rate can still be up to 100%. Inorganic antibacterial agents have the advantages of broad spectrum, heat resistance, durability, continuity and safety, but there are some disadvantages, such as silver-based antibacterial agents, which have weak anti-mildew effect, large amount of addition, high cost,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/16C08J7/12C08L27/18
Inventor 刘文芳邢易赵之平
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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