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Preparation method of corn bract cellulose nanocrystals

A corn bract, cellulose technology, applied in the synthetic fiber industry, can solve the problems of shortening the service life, reducing the membrane separation performance, increasing the use cost, etc., to increase the pore size and porosity, improve the surface hydrophilicity, increase the powerful effect

Inactive Publication Date: 2018-04-10
SHAANXI SHENGMAI PETROLEUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Polysulfone (polysulfone) is a common polymer membrane material, but the surface of polysulfone membrane is highly hydrophobic, which can easily cause membrane fouling, thereby reducing the separation performance of the membrane, shortening the service life, and increasing the cost of use, which severely limits Wide application of polysulfone membrane

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] A preparation method for corn bract cellulose nanocrystals, comprising the steps of:

[0021] (1) Extraction of corn bract fiber;

[0022] (2) Preparation of corn bract cellulose nanocrystals;

[0023] (3) Preparation of pure polysulfone membrane casting solution:

[0024] (4) Preparation of polysulfone-cellulose nanocrystalline composite membrane casting solution;

[0025] (5) Preparation of polysulfone-cellulose nanocrystalline composite membrane.

[0026] The extraction process of the corn husk fiber is as follows: the corn husk is dried until the quality is constant, soaked in the penetrating agent with a mass concentration of 10 g / L at room temperature for 72 h, and then washed with water; then soaked in the mass concentration at room temperature The concentration is 3g / L sulfuric acid solution for 2 hours and then washed with water; then the fiber of corn bracts is extracted by secondary scouring process.

[0027] The preparation process of the corn husk cellu...

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PUM

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Abstract

The invention relates to the technical field of synthetic fiber industry, and in particular, relates to a preparation method of corn bract cellulose nanocrystals. The preparation method of the corn bract cellulose nanocrystals includes the following steps: (1) extraction of corn bract fibers; (2) preparation of the corn bract cellulose nanocrystals; (3) preparation of a pure polysulfone film casting solution: (4) preparation of a polysulfone-cellulose nanocrystal composite film casting solution; and (5) preparation of a polysulfone-cellulose nanocrystal composite film. According to the prepared polysulfone-cellulose nanocrystal composite film, with addition of the cellulose nanocrystals, a structure of the polysulfone film can be improved, the pore size and porosity of a film surface are increased, the strength of the polysulfone film is increased and the surface hydrophilicity of the polysulfone film is improved.

Description

technical field [0001] The invention relates to the technical field of synthetic fiber industry, in particular to a method for preparing rice bract leaf cellulose nanocrystals. Background technique [0002] my country is a big agricultural country. Corn is one of the important food crops. The planting area and total output both rank second in the world. Therefore, a large number of corn bracts are produced every year; but the agricultural material resource of corn bracts is often discarded or Incineration has not been well utilized, which not only causes waste of resources, but also brings a series of environmental problems. Effective utilization of maize bracts is of great significance to alleviate the pressure on resources and environment in my country and promote sustainable economic development. Cellulose is one of the main components of corn bracts. Research on the extraction and further processing of cellulose can realize the high-value utilization of corn bracts. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/76B01D69/12B01D69/02B01D67/00
CPCB01D71/76B01D67/0011B01D67/0016B01D69/02B01D69/12B01D2325/02B01D2325/24B01D2325/36
Inventor 王耀斌
Owner SHAANXI SHENGMAI PETROLEUM