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One-step Preparation of Shrimp Shell with Modified Chitin Fiber and Its Application

A chitin fiber and modification technology, applied in the chemical characteristics of fibers, textiles and papermaking, etc., can solve the problems of poor adsorption performance of metal oxides, environmental pollution of reagents, complicated processes, etc., to increase transparent conductivity and reduce reagents. Dosage, simple process effect

Active Publication Date: 2021-06-18
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The base of the flexible display is generally made of flexible chemical plastics. One of the problems with chemical plastics is that it is not easy to decompose and damage the environment. The other is that the material for the base of the flexible display needs to have high light transmittance, high thermal stability, and high tensile strength. , this kind of chemical plastic is often more expensive
But in this way, not only the process is complicated, but the cost is high and the reagents used will cause environmental pollution.
In addition, flexible substrate materials often need to be coated with a layer of metal oxide materials to increase the properties of the substrate such as transparent conductivity, piezoelectricity, photoelectricity, and gas sensitivity. Ordinary chitin has poor adsorption performance on metal oxides. According to this An ideal technical structure is needed to solve the above problems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • One-step Preparation of Shrimp Shell with Modified Chitin Fiber and Its Application
  • One-step Preparation of Shrimp Shell with Modified Chitin Fiber and Its Application
  • One-step Preparation of Shrimp Shell with Modified Chitin Fiber and Its Application

Examples

Experimental program
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Effect test

Embodiment 1

[0022] First dry the shells of Antarctic krill at 60°C for 24 hours, pulverize them with an ultrafine pulverizer, and squeeze them through a 1000-mesh sieve to obtain micron-sized Antarctic krill shell powder; then transfer 10g of shrimp shell powder to a 500mL sub In the aqueous solution of sodium aminodisuccinate, the concentration of the aqueous solution of sodium iminodisuccinate is 18% (w:v), add 15g of potassium persulfate and 25g of hydrogen peroxide, seal it, stir it while heating at 40°C for 2h, filter the product, The filter residue was washed with deionized water until neutral to obtain modified chitin fibers. Then, the modified chitin fiber was transferred into the acetic acid solution with pH value = 3 according to the solid-liquid ratio of 1g:50mL, ultrasonicated at 900W, 50Hz, and ice bath for 30min, and then centrifuged at 12000rpm at 4°C for 30min, and the upper supernatant; finally, the supernatant was diluted with deionized water, and the water was evaporate...

Embodiment 2

[0024] First dry 100g of Antarctic krill shells at 70°C for 18 hours, pulverize them with a superfine pulverizer, and squeeze them through a 1000-mesh sieve to obtain micron-sized Antarctic krill shell powder; then take 10g of shrimp shell powder and transfer it to a 300mL In the aqueous solution of sodium iminodisuccinate, the concentration of the aqueous solution of sodium iminodisuccinate is 10% (w:v), add 0.3g potassium persulfate and 30g hydrogen peroxide, seal it, and stir it while heating at 30°C for 3h, the product After filtering, the filter residue was washed with deionized water until neutral to obtain modified chitin fibers. Then the modified chitin fiber was transferred into the acetic acid solution with pH value = 2 according to the solid-liquid ratio of 1g:40mL, ultrasonicated at 900W, 50Hz, and ice-bathed for 40min, then centrifuged at 11000rpm at 4°C for 60min, and the upper supernatant; finally, the supernatant was diluted with deionized water and evaporated ...

Embodiment 3

[0026] First dry 100g of Antarctic krill shells at 50°C for 24 hours, pulverize them with a superfine pulverizer, and squeeze them through a 1000-mesh sieve to obtain micron-sized Antarctic krill shell powder; In the aqueous solution of sodium iminodisuccinate, the concentration of the aqueous solution of sodium iminodisuccinate is 25% (w:v), add 40g of potassium persulfate and 0.4g of hydrogen peroxide, seal it, and stir it while heating at 45°C for 0.5h. The product is filtered, and the filter residue is washed with deionized water until neutral to obtain modified chitin fibers. Then, the modified chitin fiber was transferred into the acetic acid solution with pH value = 4 according to the solid-liquid ratio of 1g:60mL, ultrasonicated at 900W, 50Hz, and ice-bathed for 30min, and then centrifuged at 10000rpm at 4°C for 50min. supernatant; finally, the supernatant was diluted with deionized water, and the water was evaporated to dryness in an oil bath at 110°C to obtain a flex...

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Abstract

The invention relates to a modification method of chitin fiber and its application. Aiming at the problem of poor adsorption performance of ordinary chitin to metal oxides, it provides a one-step preparation method of modified chitin fiber for shrimp shells and its application. First, the shrimp The shells are dried, pulverized and sieved to obtain shrimp shell powder, and then an aqueous solution of sodium iminodisuccinate, potassium persulfate and hydrogen peroxide are added to the shrimp shell powder to obtain modified chitin fibers. The method directly prepares the modified chitin fiber in one step without treating the shrimp shell with acid, alkali or ethanol, and the process is simple, and the reagent consumption is reduced. To apply the product to the preparation of flexible materials, the modified chitin fibers are ultrasonically treated with acetic acid solution and then centrifuged to obtain a supernatant; then the supernatant is diluted with deionized water and evaporated to dryness to obtain a flexible material. The enhanced adsorption capacity of chitin to metal oxides after modification is beneficial to the coating of flexible materials with metal oxide layers, thereby increasing the properties of the substrate such as transparent conductivity, piezoelectricity, photoelectricity, and gas sensitivity.

Description

technical field [0001] The invention relates to a modification method of chitin fiber and its application, in particular to a one-step preparation method of modified chitin fiber for shrimp shells and its application. Background technique [0002] The flexible display screen is light and thin, and can be bent and has good flexibility, so it has a good development prospect. The base of the flexible display is generally made of flexible chemical plastics. One of the problems with chemical plastics is that it is not easy to decompose and damage the environment. The other is that the material for the base of the flexible display needs to have high light transmittance, high thermal stability, and high tensile strength. , This kind of chemical plastic is often more expensive. Chitin is a natural polymer that is second only to cellulose in nature, and is widely found in natural resources such as crustaceans, fungi, insects, and molluscs. Chitin has good biocompatibility and biode...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/08D01F9/00
CPCC08B37/003D01F9/00
Inventor 葛亚明刘俊稚杨家顺韩厚峰赵学芳
Owner ZHEJIANG OCEAN UNIV
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