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Bacteria cellulose membrane containing silver chloride nano particle and preparation and application thereof

A technology of bacterial cellulose film and bacterial cellulose, which is applied in the field of bacterial cellulose film containing silver chloride nanoparticles and its preparation, can solve the problem of poor air permeability, bacterial cellulose having no antibacterial activity, and affecting wound healing and post-healing Quality and other issues, to achieve the effect of simple preparation process

Inactive Publication Date: 2008-09-17
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Bacterial cellulose has good development prospects for artificial skin or other medical materials. It provides a moist environment for wounds and promotes better wound healing. However, bacterial cellulose itself has no antibacterial activity and cannot prevent wound infection
Most of the existing medical dressings have no anti-inflammatory and antibacterial effects, and the elasticity is not high, and the air permeability is not good, which affects the healing and post-healing quality of the wound

Method used

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  • Bacteria cellulose membrane containing silver chloride nano particle and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The commercially available bacterial cellulose wet film prepared by Acetobacter xylinum was obtained by a conventional separation and purification method to obtain the bacterial cellulose wet film. Intercept the bacterial cellulose wet film 1cm with scissors 2 .

[0025] Step 1. Immerse the bacterial cellulose membrane in 10mL at room temperature with a concentration of 0.001mol L -1 In the silver nitrate solution, take it out after 1 minute;

[0026] Step 2, washing the bacterial cellulose membrane obtained by step 1 three times with double distilled water, each one minute;

[0027] Step 3, immerse the bacterial cellulose membrane obtained in step 2 into 10mL, the pH value is 9, and the concentration is 0.001mol L -1 Sodium chloride solution, take it out after 1 minute;

[0028] Step 4, washing the bacterial cellulose membrane obtained by step 3 three times with double distilled water, each one minute;

[0029] Step 5, repeat the above steps 9 times, that is, imme...

Embodiment 2

[0034] The commercially available bacterial cellulose wet film prepared by Acetobacter acetogenes was obtained by a conventional separation and purification method to obtain the bacterial cellulose wet film. Intercept the bacterial cellulose wet film 1cm with scissors 2 .

[0035] Step 1. Immerse the bacterial cellulose membrane in 10 mL at room temperature with a concentration of 0.0001 mol L -1 in the silver citrate solution, take it out after 5 minutes;

[0036] Step 2, washing the bacterial cellulose membrane obtained by step 1 three times with double distilled water, each one minute;

[0037] Step 3. Immerse the bacterial cellulose membrane obtained in step 2 into 10 mL, the pH value is 8, and the concentration is 0.0001 mol L -1 Potassium chloride solution, take out after 5 minutes;

[0038] Step 4, washing the bacterial cellulose membrane obtained by step 3 three times with double distilled water, each one minute;

[0039] Step 5, repeat the above steps 5 times, th...

Embodiment 3

[0043] Commercially available bacterial cellulose wet membranes prepared by Agrobacterium were obtained by conventional separation and purification methods to obtain bacterial cellulose wet membranes. Intercept the bacterial cellulose wet film 1cm with scissors 2 .

[0044] Step 1. Immerse the bacterial cellulose membrane in 10 mL at room temperature with a concentration of 0.0001 mol L -1 in silver nitrate solution for 2 minutes;

[0045] Step 2, washing the bacterial cellulose membrane obtained by step 1 three times with double distilled water, each one minute;

[0046] Step 3. Immerse the bacterial cellulose membrane obtained in step 2 into 10 mL, the pH value is 8, and the concentration is 0.0001 mol L -1 2 minutes in sodium chloride solution;

[0047] Step 4, washing the bacterial cellulose membrane obtained by step 3 three times with double distilled water, each one minute;

[0048]Step 5, repeat the above steps once, that is, immerse the membrane twice in silver ni...

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Abstract

The invention provides a bacteria cellulose membrane containing silver chloride nanometer particles, corresponding preparation method and application, which is characterized in that a plurality of silver chloride nanometer particles are adhered to the microfiber surface of the three-dimensional porous reticular structure of the bacteria cellulose membrane, the content of the silver chloride nanometer particle is 0.5 to 21% of the total weight and which particle diameter is 10 to 300nm. The preparation method is base on the principle of using the particular three-dimensional reticular microfibrillar structure and the high oxygen density (ether linkage and hydroxy) to constitute the synthetical effective nanometer reactors by the silver chloride nanometer particles in situ and the product is obtained after repeatedly soaking in the solution of silver salt and chloride salt, rinsing and drying. The bacteria cellulose membrane containing silver chloride nanometer particles has the advantages of excellent antibacterial performance, most simple preparation process, can be used as favorable antiseptic dressing and extracting the silver chloride nanometer particles.

Description

technical field [0001] The invention relates to a bacterial cellulose film containing silver chloride nanoparticles, a preparation method and application thereof. Background technique [0002] Bacterial cellulose, also known as microbial cellulose, is recognized as a new type of biological material with excellent performance in the world, and has become one of the research hotspots of biological materials at home and abroad. The chemical composition of bacterial cellulose is very similar to the natural cellulose produced by plants or seaweed, but its physical, chemical and mechanical properties have many unique properties: ultra-fine network structure; high tensile strength and elastic modulus, excellent mechanical properties ; High hydrophilicity, there are many "holes" inside, good air permeability, water absorption, water permeability, and extraordinary water holding capacity and high wet strength; High biocompatibility, adaptability and good biodegradability Excellent s...

Claims

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Application Information

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IPC IPC(8): A61L15/28A61L15/18A61L15/42
Inventor 王华平胡伟立陈仕艳石帅科张翔沈伟李鑫
Owner DONGHUA UNIV
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