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Beta-cyclodextrin-based nanometer fiber film, preparation method thereof, and application of beta-cyclodextrin-based nanometer fiber film to dye adsorption and separation

A nanofiber membrane, cyclodextrin technology, applied in the chemical characteristics of fibers, rayon manufacturing, textiles and papermaking, etc., can solve problems such as limited use capacity, achieve good adsorption capacity, good film-forming properties, and reduce economic losses. Effect

Active Publication Date: 2016-01-06
吉林省贞靓科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The pure β-cyclodextrin itself is a water-soluble substance, which limits its ability to be used in aqueous media

Method used

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  • Beta-cyclodextrin-based nanometer fiber film, preparation method thereof, and application of beta-cyclodextrin-based nanometer fiber film to dye adsorption and separation
  • Beta-cyclodextrin-based nanometer fiber film, preparation method thereof, and application of beta-cyclodextrin-based nanometer fiber film to dye adsorption and separation
  • Beta-cyclodextrin-based nanometer fiber film, preparation method thereof, and application of beta-cyclodextrin-based nanometer fiber film to dye adsorption and separation

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Experimental program
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Effect test

Embodiment 1

[0028] Dissolve β-cyclodextrin in the solvent N,N-dimethylformamide and stir until completely dissolved, wherein the mass fraction of β-cyclodextrin is 25wt%; after the cyclodextrin is completely dissolved, add citric acid, The polyacrylic acid is stirred until it is completely dissolved, wherein the mass of citric acid and polyacrylic acid accounts for 35% and 20% of the mass of β-cyclodextrin respectively; after the solution is completely dissolved, a spinning solution is obtained, and the spinning solution is electrospun; The obtained spun nanofibers were placed in a digital display electric heating constant temperature drying box for high-temperature in-situ thermal cross-linking. The cross-linking temperature was 200°C and the cross-linking time was 2 hours. The β-cyclodextrin-based electrospun nanofibers were obtained. Dye adsorption, separation membrane. The obtained β-cyclodextrin-based electrospun nanofiber membrane has a maximum adsorption capacity of 850 mg / g for th...

Embodiment 2

[0030] Dissolve β-cyclodextrin in the solvent N,N-dimethylformamide and stir until completely dissolved, wherein the mass fraction of β-cyclodextrin is 15wt%; after the cyclodextrin is completely dissolved, add citric acid, The polyacrylic acid is stirred until it is completely dissolved, wherein the mass of citric acid and polyacrylic acid account for 20% and 10% of the mass of β-cyclodextrin respectively; after the solution is completely dissolved, a spinning solution is obtained, and the spinning solution is electrospun; The obtained spun nanofibers were placed in a digital display electric heating constant temperature drying box for high-temperature in-situ thermal cross-linking. The cross-linking temperature was 220°C and the cross-linking time was 1 hour. The β-cyclodextrin-based electrospun nanofiber dye was obtained. Adsorption, separation membrane (such as figure 2 , scanning electron micrograph). The obtained β-cyclodextrin-based electrospun nanofibrous membrane ha...

Embodiment 3

[0032]Dissolve β-cyclodextrin in the solvent N,N-dimethylformamide and stir until completely dissolved, wherein the mass fraction of β-cyclodextrin is 20wt%; after the cyclodextrin is completely dissolved, add citric acid, The polyacrylic acid is stirred until it is completely dissolved, wherein the mass of citric acid and polyacrylic acid accounts for 15% and 30% of the mass of β-cyclodextrin respectively; after the solution is completely dissolved, a spinning solution is obtained, and the spinning solution is electrospun; The obtained spun nanofibers were placed in a digital display electric heating constant temperature drying box for high-temperature in-situ thermal crosslinking. The crosslinking temperature was 170°C and the crosslinking time was 3 hours, and the β-cyclodextrin-based electrospun nanofibers were obtained. Dye adsorption, separation membrane. Adsorption of the obtained β-cyclodextrin-based electrospun nanofibrous membrane for the cationic dye basic fuchsin (...

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Abstract

The invention relates to a beta-cyclodextrin-based nanometer fiber film, a preparation method thereof, and application of the beta-cyclodextrin-based nanometer fiber film to dye adsorption and separation. The nanometer fiber dye adsorption and separation film is prepared by combining the electrospinning technology with the in-situ thermo-crosslinking method. The beta-cyclodextrin-based nanometer fiber film is prepared from body beta-cyclodextrin, crosslinking agent citric acid and polyacrylic acid which plays a role of crosslinking agents while assisting in spinning macromolecules. A crosslinking reaction happens between hydroxide radicals of beta-cyclodextrin and carboxyl of citric acid and polyacrylic acid to form ester bonds, and therefore the ester bonds are connected to form a three-dimensional crosslinked structure. The beta-cyclodextrin-based electrospinning nanometer fiber film obtained through the method can effectively separate positive ion and negative ion mixed solutions; the obtained beta-cyclodextrin-based electrospinning nanometer fiber film is high in recycling capacity. The preparation process is simple and easy to implement, raw materials can be easily obtained, friendliness to the environment is achieved, cost is low, and good application prospects are achieved.

Description

technical field [0001] The invention belongs to the technical field of environmental nano-new functional materials, and specifically relates to a β-cyclodextrin-based nanofiber membrane, a preparation method thereof and an application in dye adsorption and separation. Background technique [0002] With the rapid development of social industry, organic dyes are widely used in many industrial productions (such as cosmetics, paper making, printing, leather, textiles, plastics, etc.). Once the water body is polluted by organic dyes, it will pose a huge threat to human economy and health, because most dyes are non-degradable, and they are stable to light, heat, and oxidants. Therefore, dye wastewater has become one of the key pollution sources of the environment, and its corresponding treatment has increasingly become a hot spot of environmental protection. Among the many methods for treating dye wastewater, the adsorption method has been widely used in the field of wastewater t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D04H1/4382D01F9/00D01F1/10D01F1/00
Inventor 李响赵锐王勇孙博伦王策
Owner 吉林省贞靓科技有限公司
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