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Preparation method of cellulose film

A cellulose film and cellulose technology, applied in the field of cellulose film preparation, can solve the problems of unsuitability for expanded reproduction, not suitable, long time, etc., and achieve low production cost, increased reactivity, and fast degradation speed Effect

Inactive Publication Date: 2007-04-18
BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the ball milling method is not suitable for industrial production, because the ball milling method takes a long time, the efficiency is too low, and the cellulose may not be ground evenly, so it is not suitable for expanded reproduction

Method used

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  • Preparation method of cellulose film
  • Preparation method of cellulose film
  • Preparation method of cellulose film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Spread 20g of cotton cellulose pulp with a degree of polymerization of 450 into a uniform thin layer and put it in a plastic tray with a thickness of 2-3mm. Place the plastic tray directly under the plasma gun. The output power of the adjustable voltage power supply is 120w and the frequency is 25KHz. , open the gas valve to pass Ar gas, the gas flow rate is: 10L / min, and the lignocellulose pulp is irradiated. After irradiating for 30 seconds, turn off the power and gas valve. Then the irradiated lignocellulose pulp was dissolved in 500 liters of 6% NaOH aqueous solution, and stirred and dissolved with a 1 liter three-neck flask. The mixer is at 60 rpm, and the stirring temperature is around 0°C. The stirring and dissolving time is about 30 minutes. Then let it stand for degassing for 3 hours to obtain a transparent lignocellulose film-forming liquid for subsequent use. Then scrape the dissolved lignocellulose film-forming liquid into a film with a thickness of 0.2 m...

Embodiment 2

[0035] Spread 20g of wood cellulose pulp with a polymerization degree of 500 into a uniform thin layer and put it in a plastic tray with a thickness of 2-3mm. Place the plastic tray directly under the plasma gun. The output power of the adjustable voltage power supply is 120w, and the frequency is 25KHz. , open the gas valve to pass Ar gas, the gas flow rate is: 10L / min, and the lignocellulose pulp is irradiated. After irradiating for 30 seconds, turn off the power and gas valve. Then the irradiated lignocellulose pulp was dissolved in 500 liters of 6% NaOH aqueous solution, and stirred and dissolved with a 1 liter three-neck flask. The mixer is at 60 rpm, and the stirring temperature is around 0°C. The stirring and dissolving time is about 30 minutes. Then let it stand for degassing for 3 hours to obtain a transparent lignocellulose film-forming liquid for subsequent use. Then scrape the dissolved lignocellulose film-forming liquid into a film with a thickness of 0.2 mm on...

Embodiment 3

[0038] Spread 20g of cotton cellulose pulp with a degree of polymerization of 450 into a uniform thin layer and put it in a plastic tray with a thickness of 2-3mm. Place the plastic tray directly under the plasma gun. The output power of the adjustable voltage power supply is 120w and the frequency is 25KHz. , open the gas valve to pass Ar gas, the gas flow rate is: 10L / min, and the lignocellulose pulp is irradiated. After 60 seconds of irradiation, turn off the power and gas valve. Then the irradiated lignocellulose pulp was dissolved in 500 liters of 6% NaOH aqueous solution, and stirred and dissolved with a 1 liter three-neck flask. The mixer is at 60 rpm, and the stirring temperature is around 0°C. The stirring and dissolving time is about 30 minutes. Then let it stand for degassing for 3 hours to obtain a transparent lignocellulose film-forming liquid for subsequent use. Then scrape the dissolved lignocellulose film-forming liquid into a film with a thickness of 0.2 mm...

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Abstract

This invention relates to a preparation of cellulose membrane which is no pollution,low cost and naturally degradable,by the method of surface activation about cellulose by using hypothermic plasmas body to administer radiation and dissolving cellulose by using dilute alkali solution. The prepared cellulose membrane can be used in the area of packaging and printing.

Description

technical field [0001] The present invention relates to a kind of preparation method of cellulose film Background technique [0002] Due to the characteristics of the natural cellulose structure, it is difficult to use it directly. Only through modification techniques, such as xanthate method to prepare regenerated cellulose, graft modification to prepare cellulose acetate membrane, cuproammonia solution to prepare cellulose solution, etc., but there are serious environmental pollution problems in their production. In order to find a production process of cellulose fibers that is beneficial to the environment and solve the problem of environmental pollution, the present invention adopts plasma irradiation technology to activate the cellulose surface. Cellulose film for packaging. [0003] At present, the cellulose pretreatment methods used by people include physical, chemical and biological methods, etc., and biotechnology is to use organisms and microorganisms to modify c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L1/02C08J3/28
Inventor 武军
Owner BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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