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Preparation method of microfibrillated cellulose

A cellulose and fiber technology, applied in the field of preparation of microfibrillated cellulose, can solve problems such as environmental pollution, shorten production time, and environmental pollution by by-products, and achieve the effects of reducing environmental pollution, shortening production time, and simplifying production process

Inactive Publication Date: 2016-08-10
吴迪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main technical problem to be solved by the present invention is to provide a method for preparing microfibrillated cellulose, aiming at the problems of environmental pollution caused by pollutants produced in the preparation process of microfibrillated cellulose and high production costs caused by high energy consumption. The key technology is to use hydrogen peroxide and catalase to pretreat the crude cellulose, and the by-product is water, which solves the problem of serious environmental pollution and serious harm caused by the by-products produced by traditional chemical treatment, and the pretreatment process has mild conditions and simplifies Streamline the production process, shorten production time, and reduce production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] First, pre-slice the beet raw material, sieve and keep the part with a size of 10×10×6mm, and air-dry it for 10 hours; use a disk mill to grind the above-mentioned air-dried beet at 50°C for 25 minutes until the plant fiber raw material is initially dissociated into fibers Take 100g of fiber bundles and make a 10g / L suspension with deionized water, control the temperature of the suspension at 0°C with an ice-water bath, add 0.3g of 2,2,6,6–-tetramethylpiperidine–1– Oxygen free radicals, 0.1g catalase, 0.3g hydrogen peroxide and 0.1g manganese dioxide were added to the suspension in sequence, and after ultrasonic treatment at 180W for 30min, 100mL ethanol was added until the reaction was terminated, and the filter residue was obtained by filtration. Wash twice with deionized water to obtain sugar beet fiber; add 5 g of ethylene-propylene copolymer (wherein the mass ratio of the copolymer is ethylene:propylene=1:3) to the above-mentioned sugar beet fiber, and then add wate...

example 2

[0018] First, pre-slice the beet raw material, sieve and keep the part with a size of 15×15×6mm, and air-dry it for 10 hours; use a disk mill to grind the above-mentioned air-dried beet at 60°C for 25 minutes until the plant fiber raw material is initially dissociated into fibers Take 100g of fiber bundles and make a 10g / L suspension with deionized water, control the temperature of the suspension at 2°C with an ice-water bath, add 0.4g of 2,2,6,6–-tetramethylpiperidine–1– Oxygen free radicals, 0.1g catalase, 0.4g hydrogen peroxide and 0.1g manganese dioxide were added to the suspension in turn, and after ultrasonic treatment at 190W for 30min, 100mL ethanol was added until the reaction was terminated, and the filter residue was obtained by filtration. Wash 3 times with deionized water to obtain beet fiber; add 5 g of ethylene-propylene copolymer (wherein the mass ratio of the copolymer is ethylene:propylene=1:3) to the above-mentioned beet fiber, and then add water to adjust th...

example 3

[0020] First, pre-slice the beet raw material, sieve and keep the part with a size of 20×20×6mm, and air-dry it for 10 hours; use a disk mill to grind the above-mentioned air-dried beet at 70°C for 25 minutes until the plant fiber raw material is initially dissociated into fibers bundle, take 100g of fiber bundles and make a 10g / L suspension with deionized water, control the temperature of the suspension at 5°C with an ice-water bath, add 0.5g of 2,2,6,6–-tetramethylpiperidine–1– Oxygen free radicals, 0.1g catalase, 0.5g hydrogen peroxide and 0.1g manganese dioxide were added to the suspension in sequence, and after ultrasonic treatment at 200W for 30min, 100mL ethanol was added until the reaction was terminated, and the filter residue was obtained by filtration. Wash 3 times with deionized water to obtain beet fiber; add 5g of ethylene-propylene copolymer (wherein the mass ratio of copolymer is ethylene:propylene=1:3) to the above-mentioned beet fiber, and then add water to ad...

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Abstract

The invention discloses a preparation method of microfibrillated cellulose and belongs to the field of utilization of plant cellulose resources. The preparation method of the microfibrillated cellulose is provided to solve the problems of environmental pollution caused by pollutants produced in the preparation process of microfibrillated cellulose and high production cost caused by high energy consumption. The key technique of the preparation method is that a byproduct is water after crude cellulose is pretreated with hydrogen peroxide and catalase, the problems that byproducts generated after traditional chemical treatment severely pollute the environment and have great harm are solved, the pretreatment process and condition are mild, the production process is simplified, the production time is shortened, and the production cost is reduced.

Description

technical field [0001] The invention discloses a preparation method of microfibrillated cellulose, which belongs to the field of utilization of plant cellulose resources. Background technique [0002] With the development of the national economy and the improvement of people's living standards, people are paying more and more attention to the problem of environmental pollution. It has become a new trend of social development to find and develop green, environmentally friendly, degradable and renewable new materials. Plant fiber is a natural polymer material. Its sources are abundant, and the plants that grow on the earth each year contain hundreds of billions of tons of cellulose. Therefore, the research on natural cellulose and its derivatives has become one of the very active research fields in the field of cellulose, and is becoming more and more important. Showing its importance, microfibrillated cellulose (MFC) is a new type of nano-scale functional material, due to its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/02D21B1/06D21B1/34D21C3/00D21C5/00
CPCD21B1/02D21B1/063D21B1/345D21C3/006D21C5/005
Inventor 吴迪孟浩影
Owner 吴迪