Cyclodextrin immobilized macromolecular polymer and preparation method and application thereof

A high-molecular polymer and cyclodextrin technology, applied in chemical instruments and methods, other chemical processes, adsorption water/sewage treatment, etc., can solve problems such as non-absorbable materials, and achieve simple preparation methods, easy industrialization, and raw material sources Wide and cheap effect

Active Publication Date: 2013-01-16
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, cyclodextrin is soluble in water and cannot be direct

Method used

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  • Cyclodextrin immobilized macromolecular polymer and preparation method and application thereof
  • Cyclodextrin immobilized macromolecular polymer and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Put 3.0g styrene-maleic anhydride copolymer and 25.0g dry β-cyclodextrin in 60ml N,N-dimethylformamide, react at 50°C for 10h, remove most of the solvent under reduced pressure, and use 30°C Warm water washes the residue repeatedly to obtain β-cyclodextrin-immobilized styrene-maleic anhydride copolymer.

[0021] Dissolve 5.0 g of the solid substance in 80 ml of DMF, add 3.0 g of chloroacetyl chloride, and then raise the temperature to 90° C. for 24 hours. Most of the solvent was distilled off under reduced pressure, and the residue was washed with warm water at 50°C to obtain a cyclodextrin-immobilized polymer.

Embodiment 2

[0023] Put 3.0g styrene-maleic anhydride copolymer and 25.0g dry carboxymethyl-β-cyclodextrin in 60ml N,N-dimethylformamide, react at 70°C for 24h, remove most of the solvent under reduced pressure, Repeated washing of the detergent residue with warm water at 30°C yielded carboxymethyl-β-cyclodextrin immobilized styrene-maleic anhydride copolymer.

[0024] Dissolve 5.0 g of the solid substance in 80 ml of DMF, add 3 g of propionyl chloride dropwise, and raise the temperature to 70° C. for 24 h. Most of the solvent was distilled off under reduced pressure, and the residue was washed with warm water at 50°C to obtain a cyclodextrin-immobilized polymer.

Embodiment 3

[0025] Example 3: Adsorption of cyclodextrin-immobilized polymers to organic basic dyes

[0026] Put 0.025g of cyclodextrin-immobilized polymer in 100ml of a certain concentration of organic basic dye basic fuchsin (methylene blue) solution, seal it, and stir at a certain temperature for 12h. Centrifuge to remove the adsorbent, measure the concentration of the solution before and after adsorption with a UV-Vis spectrophotometer, and calculate the adsorption amount and adsorption rate.

[0027] The results show that: at 35°C, the saturated adsorption capacity of the adsorbent for basic fuchsin and methylene blue calculated by the Langmuir isotherm adsorption equation is 170 mg.g -1 and 200 mg.g -1 ; For an initial concentration of 50 mg.L -1 The following basic dye removal rate is above 98%.

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Abstract

The invention discloses immobilized macromolecular polymer and a preparation method and application thereof. The polymer is prepared from styrene-maleic anhydride copolymer and cyclodextrin by immobilization and acylation. The method comprises the following steps of: reacting the cyclodextrin with the styrene-maleic anhydride copolymer at the temperature of 40 to 75 DEG C to obtain cyclodextrin immobilized macromolecules, and partially esterifying at the temperature of 60 to 90 DEG C by using acyl chloride to obtain water-insoluble cyclodextrin immobilized macromolecular polymer. The synthesis reaction is simple, conditions are mild, and the method is easy to industrialize; and the polymer prepared by the method can be used as an adsorption material and can effectively adsorb organic basic dyes (basic fuchsin and methylene blue) and part of toxic heavy metal ions (Pb<2+>, Hg<2+> and Cd<2+>) in water.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a cyclodextrin-immobilized polymer, a preparation method and application thereof. Background technique [0002] Organic pollutants, especially the pollution of organic dyes to water bodies, have been one of the difficulties in industrial wastewater treatment so far. Cyclodextrin is the second-generation supramolecule. α-, β- and γ-cyclodextrin have hydrophobic cavities of different sizes, which can contain a variety of organic substances, especially organic substances containing aromatic rings. Using this property, you can Effectively remove organic pollutants in water. However, cyclodextrin is soluble in water and cannot be directly used as an adsorption material for organic matter in water. In order to overcome the water solubility of cyclodextrin, cyclodextrin can be made into a water-insoluble cyclodextrin polymer by means of cross-linking, polymerization and immobilization...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28
Inventor 张晓梅翟攀攀李宏占徐国财陈超越
Owner ANHUI UNIV OF SCI & TECH
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