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
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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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