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A kind of bacterial cellulose/fabric layered composite material and preparation method thereof

A technology of bacterial cellulose and composite materials, applied in the direction of fiber type, fiber treatment, physical treatment, etc., can solve the problems of easy adhesion, difficult to fit, restricted use, etc., to improve easy adhesion, easy operation, and improved The effect of affinity

Active Publication Date: 2016-01-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because pure bacterial cellulose is relatively soft and easy to bond, it is not easy to fit on the wound, which limits its use as a dressing

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A kind of bacterial cellulose/fabric layered composite material and preparation method thereof
  • A kind of bacterial cellulose/fabric layered composite material and preparation method thereof
  • A kind of bacterial cellulose/fabric layered composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) For strain amplification, take a ring of Acetobacter xylinum and insert it into the liquid medium, place it in a low-temperature shaker at 150 rpm and 30°C until flocs are produced in the medium;

[0035] (2) The polypropylene fabric is cut into a circle with a diameter of 15cm, and then the output power is 300W, and the reaction chamber pressure is 1.0×10 2 Under the condition of Pa, it was treated with low temperature oxygen plasma for 7min. Take out the fabric and place it in the container, sterilize it under high temperature at 0.1MPa at 121°C, and then transfer it to an oven at 60°C for drying;

[0036] (3) Take 10 mL of the above-mentioned culture medium and place it in a petri dish with a diameter of 15 cm, spread the treated polypropylene fabric on the bacterial solution, then add 5 mL of the culture medium to the fabric, and place it in a biochemical culture dish at 25°C. box until a layered composite material is formed, the polypropylene fabric has a pore...

Embodiment 2

[0042] (1) For strain amplification, take a ring of Acetobacter xylinum and insert it into the liquid medium, place it in a low-temperature shaker at 170rpm and 30°C until flocs are produced in the medium;

[0043] (2) Cut the jute fabric into a square with a side length of 10 cm, and then process the fabric with gas-phase ultraviolet light grafting technology. Take out the fabric and place it in a container, sterilize it with ethylene oxide and transfer it to an oven at 60°C for drying;

[0044] (3) Take 16mL of the above-mentioned culture medium and place it in a petri dish, spread the treated jute fabric on the bacterial solution, then add 4mL of the culture medium to the fabric, and place it in a biochemical incubator at 26°C until it forms Layered composite material, the jute fabric has a pore size of 40 microns, a porosity of 60%, a thickness of 0.1 mm, and a weight per unit area of ​​110 g / m 2 ;

[0045] (4) Soak the above-mentioned composite material in deionized wat...

Embodiment 3

[0050] (1) Add 5g of glutathione to the prepared liquid medium under aseptic conditions;

[0051] (2) For strain amplification, take a ring of Acetobacter xylinum and insert it into the above-mentioned liquid medium, place it in a low-temperature shaker at 200 rpm and 25°C until flocs are produced in the medium;

[0052] (3) Cut the nylon fabric into a rectangle with a width of 10 cm and a width of 8 cm, and then treat the surface with an 80° C. high-temperature aqueous solution of potassium hydroxide for 12 hours, and finally treat it with deionized water to neutrality. Take out the fabric and place it in a container, sterilize it with absolute ethanol and transfer it to an oven at 60°C for drying;

[0053] (4) Take 20mL of the above culture medium and place it in a petri dish, spread the treated nylon fabric on the bacterial solution, then add 5mL of the culture medium to the fabric, and place it in a biochemical incubator at 28°C until it forms Layered composite material, ...

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Abstract

The invention discloses a bacterial cellulose / fabric laminated composite material and a preparation method thereof. The preparation method comprises the following steps: (1) inoculating acetobacter xylinum into a fluid medium for enlarged cultivation; (2) appropriately cutting a fabric and treating with low-temperature oxygen plasmas or aqueous alkali, or through ultraviolet light surface grafting; and sterilizing and then drying the fabric; (3) arranging the medium containing floccules into a culture dish, spreading the treated fabric on bacterium solution, adding the medium containing floccules into the fabric, and arranging in a biochemical incubator until the laminated composite material is formed; and (4) soaking the composite material with deionized water at normal temperature, soaking the composite material with sodium hydroxide solution for two days, and soaking the composite material with deionized water until the composite material is neutral. The composite material is formed at a time, the appetency of the single fabric and the texture is improved, and the water retainability and the transdermal absorption ratio of the fabric are improved; meanwhile, the operation is convenient and simple and the using efficacy is greatly improved.

Description

technical field [0001] The invention relates to a composite material, in particular to a bacterial cellulose / fabric layered composite material and a preparation method thereof. Background technique [0002] Bacterial cellulose refers to cellulose synthesized by microorganisms. Compared with plant-derived cellulose, bacterial cellulose has many unique advantages: high purity, high crystallinity, high mechanical strength, good biocompatibility, excellent water permeability and air permeability, and good liquid retention. It is precisely because of these unique advantages of bacterial cellulose that it has received extensive attention in food, papermaking, textile and medical treatment. In recent years, bacterial cellulose has been widely used as a dressing in the medical field due to its good biocompatibility, liquid retention, and water permeability. [0003] Fabric is a textile made of natural fibers or synthetic fibers, and is a flat and soft piece made of small and long ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/05D06M10/00D06M14/22D06M11/38D06M14/28A61L15/28D06M101/34D06M101/32
Inventor 任力王迎军张雪婷刘卅李立风
Owner SOUTH CHINA UNIV OF TECH
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