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Extraction method of bran coat cellulose and preparation method of bran coat fiber membrane

An extraction method and cellulose technology, applied in the field of materials, can solve problems such as complex components, difficult to recycle, and difficult to degrade, and achieve the effects of good light transmission, improved reaction ability, and good reactivity

Pending Publication Date: 2020-11-17
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional polyolefin films are limited in use because of their complex components, difficulty in recycling and difficulty in degrading, etc., which have a certain negative impact on life and the environment

Method used

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  • Extraction method of bran coat cellulose and preparation method of bran coat fiber membrane
  • Extraction method of bran coat cellulose and preparation method of bran coat fiber membrane
  • Extraction method of bran coat cellulose and preparation method of bran coat fiber membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]This embodiment relates to a method for extracting rice bran cellulose: fresh rice bran is cleaned after removing impurities, dried in an oven at 60° C., and passed through an 80-mesh sieve. Then take 30g of rice bran powder and treat it with 80wt% ethanol solution at 70°C for 4 hours, rinse the obtained residue with distilled water and dry it, and then wash it with 5wt% dilute H 2 SO 4 Treat at 120°C for 4 hours, wash the obtained residue with distilled water until it is neutral, and then dry it, then treat the residue with 9wt% NaOH solution at 100°C for 4 hours, and control the bath ratio to 1:20. Suction filtration after extraction is completed, wash with distilled water to neutrality and then dry, finally use 30wt% H 2 o 2 Place it at 90°C for 8 hours for decolorization treatment. After the reaction, wash the residue with distilled water, filter and dry to obtain relatively pure rice bran cellulose.

Embodiment 2

[0044] This embodiment relates to a method for extracting rice bran cellulose: fresh rice bran is cleaned after removing impurities, dried in an oven at 60° C., and passed through an 80-mesh sieve. Then take 30g of rice bran powder and treat it with 80wt% ethanol solution at 70°C for 4h, rinse the obtained residue with distilled water and dry it, and then wash it with 5wt% dilute H 2 SO 4 The solution was treated at 120°C for 4 hours, and the obtained residue was washed with distilled water until it was neutral, then dried, and then treated with 10 wt% NaOH solution at 100°C for 5 hours, and the bath ratio was controlled to be 1:30. Suction filtration after extraction is completed, wash with distilled water to neutrality and then dry, finally use 30wt% H 2 o 2 React at 90°C for 9 hours for decolorization. After the reaction, wash the residue with distilled water, filter and dry to obtain relatively pure bran cellulose.

Embodiment 3

[0046] This embodiment relates to a method for extracting rice bran cellulose: fresh rice bran is cleaned after removing impurities, dried in an oven at 60° C., and passed through an 80-mesh sieve. Then take 30g of rice bran powder and treat it with 80wt% ethanol solution at 70°C for 5h, rinse the obtained residue with distilled water and dry it, and then wash it with 5wt% dilute H 2 SO 4 The solution was treated at 120°C for 5 hours, and the obtained residue was washed with distilled water until neutral and then dried, and then treated with 11wt% NaOH solution at 100°C for 6 hours, and the bath ratio was controlled to be 1:40. Suction filtration after extraction is completed, wash with distilled water to neutrality and then dry, finally use 30wt% H 2 o 2 Place it at 90°C for 10 hours for decolorization. After the reaction, wash the residue with distilled water, filter and dry to obtain relatively pure bran cellulose. In Examples 1-3 of the present invention, the comparison...

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Abstract

The invention provides an extraction method of bran coat cellulose and a preparation method of a bran coat fiber membrane. According to the extraction method, impurity components in bran coat crude fibers can be fully removed, the relatively pure bran coat cellulose is finally obtained, and the groove structure on the surface of the bran coat cellulose enables the cellulose to have better reactionactivity, so that the reaction capacity with subsequent reagents is improved. The bran coat cellulose subjected to decolorization treatment is used for preparing the bran coat fiber membrane which has better light transmission. The preparation process of the bran coat cellulose film is simple and pollution-free, the green development requirement is met, the prepared bran coat cellulose film material belongs to a renewable biomass material, and has good antibacterial and fresh-keeping properties, so that the material is expected to be applied to the fields of food packaging and fresh keeping.

Description

technical field [0001] The invention belongs to the field of material technology; in particular, it relates to a method for extracting rice bran cellulose and a method for preparing a rice bran fiber film. Background technique [0002] With the rapid development of science and technology, human beings have to face the dual challenges of resource shortage and environmental pollution. Therefore, abundant and renewable biomass materials are increasingly becoming one of the chemical raw materials that can replace fossil resources in the future. Cellulose is the most abundant, inexhaustible and inexhaustible natural polymer on the earth. It is one of the most important biomass resources. Therefore, various new materials developed based on cellulose and its derivatives Emerging in endlessly, especially the semi-rigid polymer skeleton structure and excellent film-forming properties of cellulose molecules, it has been widely used in the field of membrane technology. [0003] Thin ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00C08J5/18C08J7/12C08L1/02
CPCD21C5/00C08J5/18C08J7/12C08J2301/02
Inventor 史楠王海宾李佩芸高莉许朝郭建峰王芳
Owner ZHONGBEI UNIV
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