Method for preparing lignin nanotube by utilizing agriculture and forestry biomass raw materials

A biomass raw material, lignin technology, applied in the field of lignin nanotubes, can solve problems such as environmental pollution, complicated operation process, etc., and achieve the effects of simple and easy method, improved environmental performance, and easy operation.

Active Publication Date: 2021-10-22
SOUTHWEST JIAOTONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the above-mentioned problems existing in the prior art, the present invention provides a method for preparing lignin nanotubes by utilizing agricultural

Method used

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  • Method for preparing lignin nanotube by utilizing agriculture and forestry biomass raw materials
  • Method for preparing lignin nanotube by utilizing agriculture and forestry biomass raw materials
  • Method for preparing lignin nanotube by utilizing agriculture and forestry biomass raw materials

Examples

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Example Embodiment

[0029] Example 1

[0030] A method of preparing a luminosine nanotube using a raw material of agriculture and forestry, including the following steps:

[0031] (1) Point 100 g of pulverized wheat straw is dispersed in a sodium hydroxide solution having a mass concentration of 0.4%, and the biomass raw material is 1% in the sodium hydroxide solution, and the ball mill is added thereto, and sodium hydroxide solution. The volume ratio of tetrahydrofuran is 100: 5, the ball milling speed is 600 rpm, the ball milling time is 10 h, then centrifuged at 10,000 rpm, and the supernatant is collected;

[0032] (2) In the supernatant of step (1), a mass concentration of 0.4% is 0.4% to a solution of 200 μl / min, and then the dialysis of 48 h is carried out using a semi-permeable membrane to prepare lignin nanometers. The solution of the tube.

Example Embodiment

[0033] Example 2

[0034] A method of preparing a luminosine nanotube using a raw material of agriculture and forestry, including the following steps:

[0035] (1) Dispersion of 100 g of pulverized wheat straw in a hydroxide solution having a mass concentration of 2%, the biomass raw material is 3% in the hydroxide solution, and polyethylene glycols having a molecular weight of 4000 is added thereto. After the ball mill, the sodium hydroxide solution and the polyethylene glycol is 100: 10, the ball milling speed is 300 rpm, the ball milling time is 8 h, then centrifuged at 12000 rpm for 7 minutes, and the supernatant is collected;

[0036] (2) In the supernatant of the step (1), a mass concentration of 0.4% a hydrochloride is 0.4% to the solution in the supernatant, and then dialyzed with a semi-permeable membrane for dialysis, a lignin nano is prepared. The solution of the tube.

Example Embodiment

[0037] Example 3

[0038] A method of preparing a luminosine nanotube using a raw material of agriculture and forestry, including the following steps:

[0039] (1) A 100 g of pulverized corn stalk is dispersed in a hydroxide solution having a mass concentration of 3%, and the mass concentration of the biomass raw material is 6% in the hydroxide solution, and the ball mill is added thereto. The volume ratio of the potassium hydroxide solution to the dimethyl sulfoxide is 100: 10, the ball milling speed is 500 rpm, the ball milling time is 8 h, then centrifuged at 12000 rpm for 6 minutes, and the supernatant is collected;

[0040] (2) In the supernatant of step (1), a mass concentration of 0.7% to a solution to a solution in the supernatant of 400 μl / min, and then the dialysis of the semipermeable membrane was used to prepare lignin nanometers. The solution of the tube.

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Abstract

The invention provides a method for preparing a lignin nanotube by utilizing an agriculture and forestry biomass raw materials. The method comprises the following steps: dispersing crushed biomass raw materials in an inorganic alkaline solution, adding a cosolvent into the solution, performing ball milling, then performing centrifuging, and collecting supernate; and dropwise adding inorganic acid into the supernate until the solution is neutral, and performing dialyzing by using a semipermeable membrane to obtain a solution containing the lignin nanotube. The method can effectively solve the problems of complex operation process and environmental pollution in existing methods.

Description

technical field [0001] The invention belongs to the technical field of lignin nanotubes, and in particular relates to a method for preparing lignin nanotubes from agricultural and forestry biomass raw materials. Background technique [0002] The tubular structure has many advantages, such as a large specific surface area, which can block and dissipate sound waves and heat; the tubular structure has many applications in social life, such as adsorption, sound insulation, protection, etc., and a variety of materials are used to synthesize The product with a tubular structure makes the obtained material have the largest specific surface area under the same volume, which brings quite excellent macroscopic properties. [0003] Lignin is the only renewable natural aromatic polymer in nature. It has a wide range of sources and accounts for 15-30% of various agricultural and forestry biomass resources. In addition, the pulp and paper industry also produces a large amount of lignin M...

Claims

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Application Information

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IPC IPC(8): C08H7/00B82Y40/00
CPCC08H6/00B82Y40/00Y02P20/54
Inventor 姜曼胡翔洲王峰陆远潘宇
Owner SOUTHWEST JIAOTONG UNIV
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