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A kind of preparation method of nanofiber fluorescent film

A nanofiber and fluorescent film technology is applied in the field of preparation of nanofiber fluorescent films, which can solve the problems of easy aggregation of fluorescent components, complicated preparation process, low luminous efficiency, etc., and achieves good stability and durability, simple preparation process, and low luminous efficiency. High mechanical properties

Active Publication Date: 2021-12-03
MINJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low luminous efficiency of existing fluorescent fiber membranes, easy aggregation of fluorescent components, poor fluorescent performance, low stability, difficulty in biodegradation, complex preparation process, and high energy consumption, and to provide a nanofiber fluorescent film Membrane Preparation Method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Pretreatment of cellulose: Add 2g of bamboo fiber to 50g of 15wt% cellulase aqueous solution, stir and react at 60°C for 6h, then ultrasonically treat with 900W power for 2h to obtain a uniformly mixed bamboo fiber pretreatment solution;

[0021] (2) Modification of cellulose nanostructure: Dissolve 2g of citric acid into 40g of the bamboo fiber pretreatment solution prepared in step (1), add 2g of 2-aminophenol, react in an oil bath at 110°C for 5 hours, and remove the reaction solution by centrifugation. Add 60mL distilled water to form modified bamboo nanofiber suspension;

[0022] (3) Dissolve 15g of polyvinyl alcohol in 30g of the modified bamboo nanofiber suspension prepared in step (2), add 55mL of distilled water and stir at 100°C for 3 hours to form a uniform suspension, and place the suspension in a petri dish , formed bamboo nanofiber fluorescent film after cooling to room temperature.

Embodiment 2

[0024] (1) Cellulose pretreatment: Take 1g of cotton fiber and add it to 60g of 20wt% cellulase aqueous solution, stir and react at 60°C for 6h, and then ultrasonically treat it with 900W power for 2h to obtain a uniformly mixed cotton fiber pretreatment solution;

[0025] (2) Modification of cellulose nanostructure: Dissolve 3 g of citric acid into 60 g of the cotton fiber pretreatment solution prepared in step (1), add 4 g of 2-aminophenol, react in an oil bath at 110°C for 5 hours, and remove the reaction solution by centrifugation. Add 40mL distilled water and make modified cotton nanofiber suspension;

[0026] (3) Dissolve 20 g of polyvinyl alcohol in 50 g of the modified cotton nanofiber suspension prepared in step (2), add 63 mL of distilled water and stir at 100 ° C for 3 h to form a uniform suspension, and place the suspension in a petri dish. Cotton nanofiber fluorescent film was formed after cooling to room temperature.

Embodiment 3

[0028] (1) Pretreatment of cellulose: add 1g of hemp fiber to 80g of 10wt% cellulase aqueous solution, stir and react at 60°C for 6h, then ultrasonically treat at 900W for 2h to obtain a uniformly mixed hemp fiber pretreatment solution;

[0029] (2) Modification of cellulose nanostructures: Dissolve 4g of citric acid into 65g of the hemp fiber pretreatment solution prepared in step (1), add 6g of 2-aminophenol, react in an oil bath at 110°C for 5 hours, and remove the reaction solution by centrifugation. Add 35mL distilled water and make modified hemp nanofiber suspension;

[0030] (3) Dissolve 10 g of polyvinyl alcohol in 40 g of the modified hemp nanofiber suspension prepared in step (2), add 17 mL of distilled water and stir at 100 °C for 3 h to form a uniform suspension, and place the suspension in a petri dish, After cooling to room temperature, the hemp nanofiber fluorescent film was formed.

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Abstract

In order to solve the problems of low luminous efficiency, poor fluorescence performance, low stability, difficult biodegradation, complicated preparation process and high energy consumption of the existing fluorescent fiber membrane, the invention provides a preparation method of the nanofiber fluorescent membrane. The invention uses small organic molecules to chemically modify the nanostructure of natural cellulose, introduces fluorescent groups on the surface, uses the modified nanocellulose as a fiber matrix and fluorescent components, and prepares a biodegradable nanofiber fluorescent film. The prepared nanofiber fluorescent membrane has high fluorescence efficiency, good stability and durability, and good mechanical properties. The method of the invention has the advantages of simple preparation process, low energy consumption, high production efficiency, low cost and environmental friendliness.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a preparation method of a nanofiber fluorescent film. Background technique [0002] Fiber fluorescent film is a functional fiber film made of polyester, acrylic, vinylon, nylon and other fibers as the base material, adding fluorescent compounds, and spinning. It has broad applications in the fields of biomedicine, wearable devices, optoelectronic devices, and functional clothing. application prospects. The traditional fluorescent source components used in the preparation of fluorescent films are inorganic quantum dots, rare earth complexes or organic small molecule light-emitting materials. Rare earth complexes have many surface defects, poor chemical stability, and uneven dispersion when embedded in the fiber matrix, and the prepared nanofiber fluorescent film has poor performance. Organic small molecule light-emitting materials often contain conjugated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L1/08C08L29/04C08B15/06C09K11/06
CPCC08B15/06C08J5/18C08J2329/04C08J2401/08C09K11/06
Inventor 卢麒麟李永贵卢琳娜郭永梅
Owner MINJIANG UNIV
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