Method for preparing plant cellulose film by taking herbaceous plant as raw material

A plant cellulose film, plant cellulose technology, which is applied in fiber raw material processing, textiles and papermaking, etc., can solve the development constraints of traditional methods, difficulties in copper and ammonia recovery, environmental pollution and other problems, so as to avoid pollution problems and waste. and environmental pollution, the effect of high recycling rate

Inactive Publication Date: 2011-07-20
李文江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the viscose method, CS will be released 2 and H 2 Toxic substances such as S seriously pollute the environment; copper and ammonia are diff

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] Take an appropriate amount of dried, rolled and crushed herbaceous plant raw material rice straw, wheat straw, reed or saltwater grass, soak it in 10g / L sodium hydroxide aqueous solution for 8 hours, the herbal plant raw material and sodium hydroxide aqueous solution The bath ratio (weight ratio) is controlled at 1:18, and heated to boiling for 2h. Then wash the insoluble matter with water until it is colorless, then repeatedly wash it with 5% dilute hydrochloric acid and 4% dilute sodium carbonate aqueous solution until the pH value of the insoluble matter is 7±0.2, then dry the insoluble matter to obtain Herbal cellulose: straw cellulose, wheat straw cellulose, reed cellulose or saltwater grass cellulose.

[0026] Take 100ml of a commercially available NMMO aqueous solution, concentrate it at a vacuum of -0.1MPa, and a temperature of 90°C until the NMMO aqueous solution has a water content of 13.5% by mass, and add an appropriate amount of prepared...

Example Embodiment

[0030] Example 2

[0031] Take an appropriate amount of bagasse that has been pretreated by drying, rolling and crushing, and soak it in an aqueous sodium hydroxide solution with a concentration of 18g / L for 8 hours. The bath ratio of bagasse and aqueous sodium hydroxide is controlled at 1:25, and heated to Boiling 3h. Then wash the insoluble matter until it is colorless, and then wash it repeatedly with 5% dilute hydrochloric acid and 4% dilute sodium carbonate aqueous solution until the pH value of the insoluble matter is 7±0.2, and then dry to obtain bagasse cellulose.

[0032] Take 100ml of a commercially available NMMO aqueous solution, concentrate it at a vacuum degree of -0.08MPa, and a temperature of 100°C until the NMMO aqueous solution has a water content of 15% by mass, and add an appropriate amount of bagasse cellulose and bagasse Additive propyl gallate of 0.1% of cellulose dry weight, stir to make it mix evenly. Then swell for 3 hours, then vacuum again at a t...

Example Embodiment

[0036] Example 3

[0037] Take 200 g of dried, rolled and crushed pretreated rice straw, soak it in an aqueous sodium hydroxide solution with a concentration of 15 g / L for 8 hours, control the bath ratio of rice straw to aqueous sodium hydroxide solution at 1:22, and heat to boiling at 2.5 h. Then wash the insoluble matter until it is colorless, then wash repeatedly with 5% dilute hydrochloric acid and 4% dilute sodium carbonate aqueous solution until the pH of the insoluble matter is 7±0.2, and then dry to obtain rice straw fiber white.

[0038] Take 100ml of commercially available NMMO aqueous solution, concentrate it to the NMMO aqueous solution with a water content of 13.3% under the condition of vacuum degree of -0.08MPa and temperature of 95°C, add 7.5 grams of prepared straw cellulose and straw fiber 0.1% additive propyl gallate by dry weight, stir to make it evenly mixed. Then, after swelling for 2.5 hours, vacuum again at a temperature of 95° C., with a vacuum degr...

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PUM

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Abstract

The invention discloses a method for preparing a plant cellulose film by taking a herbaceous plant as a raw material. The method comprises the following steps of: (1) extracting plant cellulose from the herbaceous plant serving as the raw material; (2) uniformly mixing the plant cellulose, an antioxidant and a solvent N-methylmorpholine-N-oxide aqueous solution to obtain a plant cellulose solution; and (3) forming a film by spraying or scraping the plant cellulose solution and performing post-treatment to obtain the plant cellulose film. The method has a simple process and is environmentally-friendly. The prepared plant cellulose film has high mechanical property and biodegradability.

Description

technical field [0001] The invention relates to the field of preparation of cellulose films, in particular to a method for preparing plant cellulose films from herbs. Background technique [0002] Plant cellulose is the most abundant renewable organic resource on the earth. In my country, the annual output of non-wood fibers such as rice straw, wheat straw, bagasse, reed, and bamboo exceeds 1 billion tons. It is an inexhaustible natural polymer chemical raw material and energy source. . Plant cellulose material is non-toxic and highly water-resistant, so it can appear in different forms such as powder, flakes, films, and long and short filaments. If the plant cellulose in nature can be fully utilized, it will not only help protect the environment, but also alleviate the current energy pressure caused by the dwindling oil and gas resources. [0003] The inter-molecular and intra-molecular hydrogen bonds of cellulose make it difficult for cellulose to be directly dissolved by...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08J7/00D21C5/00C08L1/02C08K5/134C08K5/13
Inventor 李文江代琛谢飞
Owner 李文江
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