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Method for preparing tea polyphenol/cellulose acetate nanofiber membrane

A technology of cellulose acetate and nanofiber membrane, which is applied in the field of nanomaterials, can solve the problems that there is no composite preparation of nanofibers, and achieve the effect of wide application prospects

Inactive Publication Date: 2016-01-06
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] There are many reports on cellulose and cellulose derivative nanofibers prepared by electrospinning, but there is no report in the prior art that composites cellulose or its derivatives with tea polyphenols to prepare nanofibers by electrospinning

Method used

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  • Method for preparing tea polyphenol/cellulose acetate nanofiber membrane
  • Method for preparing tea polyphenol/cellulose acetate nanofiber membrane
  • Method for preparing tea polyphenol/cellulose acetate nanofiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The cellulose acetate and absolute ethanol were placed in a beaker at a mass ratio of 5:8 and sealed, and stirred at room temperature for 20 min by a magnetic stirrer to disperse the cellulose acetate to obtain a mixed solution.

[0030] Put the tea polyphenol powder in N-N dimethylformamide liquid and seal it into an ultrasonic cell pulverizer, and process the mixed solution for 5 minutes in a cyclic pulse working mode.

[0031] Pour the prepared cellulose acetate / absolute ethanol mixture into the tea polyphenol / N-N dimethylformamide solution to prepare a mixed solution with a mass fraction of cellulose acetate of 8%, and put it in a water bath with a magnetic force of 60°C. Stir in a stirring pot for 5 hours until a completely homogeneous and transparent solution is formed.

[0032] Adjust the ambient temperature and humidity in the operating room to ensure that the spinning ambient temperature is 20°C and the relative humidity is within the range of 65%. The prepare...

Embodiment 2

[0036] The cellulose acetate and absolute ethanol were placed in a beaker at a mass ratio of 5:8 and sealed, and stirred at room temperature for 20 min by a magnetic stirrer to disperse the cellulose acetate to obtain a mixed solution.

[0037] Put the tea polyphenol powder in N-N dimethylformamide liquid and seal it into an ultrasonic cell pulverizer, and process the mixed solution for 5 minutes in a cyclic pulse working mode.

[0038] Pour the prepared cellulose acetate / absolute ethanol mixture into the tea polyphenol / N-N dimethylformamide solution to prepare a mixed solution with a mass fraction of cellulose acetate of 8%, and put it in a water bath with a magnetic force of 60°C. Stir in a stirring pot for 5 hours until a completely homogeneous and transparent solution is formed.

[0039] Adjust the ambient temperature and humidity in the operating room to ensure that the spinning ambient temperature is 20°C and the relative humidity is within the range of 65%. The prepare...

Embodiment 3

[0043] The cellulose acetate and absolute ethanol were placed in a beaker at a mass ratio of 5:8 and sealed, and stirred at room temperature for 20 min by a magnetic stirrer to disperse the cellulose acetate to obtain a mixed solution.

[0044]Put the tea polyphenol powder in the N-N dimethylformamide liquid and seal it into an ultrasonic cell pulverizer, and process the mixed liquid for 5 minutes in a cyclic pulse working mode.

[0045] Pour the prepared cellulose acetate / absolute ethanol mixture into the tea polyphenol / N-N dimethylformamide solution to prepare a mixed solution with a mass fraction of cellulose acetate of 8%, and put it in a water bath with a magnetic force of 60°C. Stir in a stirring pot for 5 hours until a completely homogeneous and transparent solution is formed.

[0046] Adjust the ambient temperature and humidity in the operating room to ensure that the spinning ambient temperature is 20°C and the relative humidity is within the range of 65%. The prepar...

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Abstract

The invention discloses a method for preparing a tea polyphenol / cellulose acetate nanofiber membrane. Cellulose acetate and absolute ethyl alcohol are placed in a sealed container, and stirred at room temperature till even dispersing is achieved, and mixed liquid is obtained; tea polyphenol powder is added to N-N dimethyl formamide liquid, the solution is placed in an ultrasonic cell dispenser in a sealed mode, and circulating pulse treatment is carried out; the mixed liquid of cellulose acetate / absolute ethyl alcohol is poured into a tea polyphenol N-N dimethyl formamide solution, and a mixed solution with the mass fraction of cellulose acetate being 8% to 12% is prepared; stirring is carried out till a uniform and transparent spinning solution is formed, and the tea polyphenol / cellulose acetate nanofiber membrane is prepared through static spinning. Nanofibers prepared through the method are smooth and even in surface, the advantages of tea polyphenol and cellulose acetate can be comprehensively utilized in the nanofiber membrane, and the nanofiber membrane has wide application prospects in the fields of medical treatment and public health, health care and the like.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and relates to a preparation method of a nanofiber membrane, in particular to a preparation method of a tea polyphenol / cellulose acetate nanofiber membrane. Background technique [0002] Nanofiber refers to a thread-like material with a diameter of nanoscale and a large length with a certain aspect ratio. In a narrow sense, the diameter of a nanofiber is between 1 and 100 nm; in a broad sense, any fiber with a diameter below 1000 nm can be called a nanofiber. Nanofibers have the advantages of small size, high specific surface area, stable mechanical properties, and high adsorption capacity. The nanofiber membrane material with a three-dimensional porous structure formed by stacking nanofibers has the advantages of small pore size, high porosity, and good connectivity. It is widely used in biomedicine, filtration separation, electronic information, personal protection and other fields...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D04H1/4258D01F1/10D01F2/08
Inventor 王萍赵竹馨田爽张岩徐岚刘福娟何吉欢
Owner SUZHOU UNIV
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