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Bacterial cellulose-plant fiber composite fluorescent paper with high fluorescence property and durability and preparation method thereof

A technology of bacterial cellulose and fluorescent properties, applied in the field of fluorescent paper, can solve problems such as low stability, achieve strong stiffness, improve fluorescent efficiency, and reduce costs

Pending Publication Date: 2020-05-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Wu Shanshan and others used the coating method to make a kind of fluorescent antibacterial dual-function coated paper, but the method of coating is to attach the fluorescent coating to the paper by physical means, only the force between molecules, the stability may be relatively low

Method used

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  • Bacterial cellulose-plant fiber composite fluorescent paper with high fluorescence property and durability and preparation method thereof
  • Bacterial cellulose-plant fiber composite fluorescent paper with high fluorescence property and durability and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Cut 20g of bacterial cellulose (dry weight 1.5%) wet film into small pieces of 1cm×1cm×0.8mm, add them together with 130ml of water into the high-speed dispersion equipment, and disperse through the high-speed dispersion equipment for 20s to make it into a mass fraction of 0.2% bacterial cellulose pulp. Europium trioxide Eu 2 o 3 (0.727g) was dissolved in concentrated hydrochloric acid, placed in a boiling water bath, and the hydrochloric acid that did not participate in the reaction was evaporated using a magnetic stirrer, and 0.0416mol / LEuCl was obtained by constant volume 3 ·6H 2 O. Will contain 30ml 0.0416mol / LEuCl 3 ·6H 2 The beaker of the O solution was placed on a magnetic stirring heater, NaOH solution (1M) was added to adjust the pH to 5, heated to 40° C., and the rotational speed was adjusted to 400 rpm. Then the above-mentioned bacterial cellulose slurry was added dropwise to EuCl 3 ·6H 2 O solution, and heated to 70°C again, adding NaOH solution (1M)...

Embodiment 2

[0036] Cut 20g of bacterial cellulose (dry weight 1.5%) wet film into small pieces of 1cm×1cm×0.8mm, add them together with 130ml of water into the high-speed dispersion equipment, and disperse through the high-speed dispersion equipment for 20s to make it into a mass fraction of 0.2% bacterial cellulose pulp. Europium trioxide Eu 2 o 3 (0.727g) was dissolved in concentrated hydrochloric acid, placed in a boiling water bath, and the hydrochloric acid that did not participate in the reaction was evaporated using a magnetic stirrer, and 0.0416mol / LEuCl was obtained by constant volume 3 ·6H 2 O. Will contain 30ml 0.0416mol / LEuCl 3 ·6H 2 The beaker of the O solution was placed on a magnetic stirring heater, NaOH solution (1M) was added to adjust the pH to 5.5, heated to 55° C., and the rotational speed was adjusted to 400 rpm. Then the above-mentioned bacterial cellulose slurry was added dropwise to EuCl 3 ·6H 2O solution, and heated to 70°C again, adding NaOH solution (1M...

Embodiment 3

[0039] Cut 20g of bacterial cellulose (dry weight 1.5%) wet film into small pieces of 1cm×1cm×0.8mm, add them together with 130ml of water into the high-speed dispersion equipment, and disperse through the high-speed dispersion equipment for 20s to make it into a mass fraction of 0.2% bacterial cellulose pulp. Europium trioxide Eu 2 o 3 (0.727g) was dissolved in concentrated hydrochloric acid, placed in a boiling water bath, and the hydrochloric acid that did not participate in the reaction was evaporated using a magnetic stirrer, and 0.0416mol / LEuCl was obtained by constant volume 3 ·6H 2 O. Will contain 30ml 0.0416mol / LEuCl 3 ·6H 2 The beaker of the O solution was placed on a magnetic stirring heater, NaOH solution (1M) was added to adjust the pH to 6, heated to 70° C., and the rotational speed was adjusted to 400 rpm. Then the above-mentioned bacterial cellulose slurry was added dropwise to EuCl 3 ·6H 2 O solution, and heated to 75°C again, adding NaOH solution (1M)...

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Abstract

The invention discloses bacterial cellulose-plant fiber composite fluorescent paper with high fluorescence property and durability and a preparation method thereof. The preparation method comprises the following steps: allowing rare earth luminescent element ions to be absorbed onto bacterial cellulose so as to form a complex, and compounding the complex with plant fiber pulp so as to prepare fluorescent paper with high fluorescence property and high durability. Rare earth elements have strong photoluminescence performance, and can emit visible light after being excited by ultraviolet light and comprise cerium, neodymium, europium, terbium, thulium, ytterbium and the like. The bacterial cellulose is cellulose secreted and synthesized by bacterial microorganisms. The plant fiber pulp is a papermaking pulp raw material prepared from wood fibers, non-wood plant fibers or secondary fibers through a mechanical or chemical pulping method and the like, and comprises hardwood pulp, softwood pulp, bagasse pulp, bamboo pulp, straw pulp, secondary fiber pulp and the like. The fluorescent paper prepared by using the preparation method provided by the invention has the advantages of high fluorescence intensity, strong durability, high stability, low cost and the like.

Description

technical field [0001] The invention relates to the field of fluorescent paper, in particular to bacterial cellulose-plant fiber composite fluorescent paper with high fluorescent performance and durability and a preparation method thereof. Background technique [0002] The luminescence of rare earth compounds is based on the transition of their 4f electrons within f-f configurations or between f-d configurations. When rare earth ions are chelated with negatively charged ligands, the ligands can act as photosensitizers and transfer the absorbed energy to rare earth ions, so that the "antenna effect" caused by the ligand-rare earth element complexes has a stronger photoluminescent properties. These complexes have been widely used in the field of fluorescence. [0003] Bacterial cellulose is a special cellulose material synthesized by microorganisms in vitro. Its microstructure is composed of interwoven ultrafine cellulose nanofibrils with a width of less than 100 nm, forming...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/25D21H17/66D21H21/30C09K11/06
CPCC09K11/06C09K2211/182D21H17/25D21H17/66D21H21/30
Inventor 项舟洋张明权熊雨桐吕发创
Owner SOUTH CHINA UNIV OF TECH