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Polystyrene fiber adsorption material with surface grafted with beta-cyclodextrin, and preparation and application thereof

A polystyrene fiber, surface grafting technology, applied in adsorption water/sewage treatment, other chemical processes, water/sludge/sewage treatment, etc., can solve the problem of refractory, high toxicity, human health and ecological environment impact and other issues, to achieve the effects of good environmental compatibility, low cost and simple operation

Active Publication Date: 2019-03-29
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the rapid development of industry and urbanization, the problem of environmental pollution is becoming more and more serious. As industrial raw materials and intermediates, phenolphthalein is widely used in the fields of medicine, dyes, pesticides, preservatives and transportation, but due to its high toxicity , non-degradable and stable chemical properties, if the phenolphthalein in the discharged wastewater is not treated effectively in time, it will have a huge negative impact on human health and the ecological environment

Method used

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  • Polystyrene fiber adsorption material with surface grafted with beta-cyclodextrin, and preparation and application thereof
  • Polystyrene fiber adsorption material with surface grafted with beta-cyclodextrin, and preparation and application thereof
  • Polystyrene fiber adsorption material with surface grafted with beta-cyclodextrin, and preparation and application thereof

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Experimental program
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Embodiment 1

[0037] Preparation of a polystyrene fiber: preparing a polystyrene tetrahydrofuran spinning solution with a mass fraction of polystyrene (weight-average molecular weight Mw=275,000 g / mol) of 25%. The spinning voltage is 25KV, the receiving distance is 20cm, the drum is used as the receiving device, the injection speed is 1.5ml / h, and the electrospinning is carried out at room temperature. A polystyrene fiber (PS) is obtained by removing the non-volatile solvent in the spinning process.

Embodiment 2

[0039] A kind of preparation of aminated polystyrene fiber: the polystyrene fiber prepared in 200mg comparative example 1 is put into the 2.0g / L dopamine solution (solvent is 1.2g / L three hydroxymethylaminomethane solution) in a beaker, vibrate for 48h, take out the fiber, wash it three times with deionized water, dry it in vacuum to constant weight, and obtain the aminated polystyrene fiber (PS / PDA) with polydopamine nanoparticles on the surface ).

Embodiment 3

[0041] Preparation of a surface chemically grafted β-cyclodextrin polystyrene fiber adsorption material:

[0042] (1) Preparation of carboxylated β-cyclodextrin: Take 1.13g β-cyclodextrin, 0.10g succinic anhydride and 8mL DMF, stir to dissolve, then add 0.14mL triethylamine, heat the solution to 40°C for 24h . After the reaction was completed, after the solution was cooled to room temperature, 80 mL of chloroform was added to it until the precipitation was complete, the white flocculent precipitate was collected by centrifugation, washed with acetone, and dried in a vacuum drying oven to constant weight to obtain carboxylated β-ring Dextrin (CB-β-CD).

[0043] (2) Weigh 0.185g of carboxylated β-cyclodextrin and dissolve it in 10mL of MES buffer solution with pH=6.0, then add 0.144g of EDCI and 0.086g of NHS, and activate at 30°C for 8h to obtain activated carboxylated β-cyclodextrin dextrin.

[0044] (3) Add 0.02 g of the aminated polystyrene fiber prepared in Comparative E...

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Abstract

The invention relates to a polystyrene fiber adsorption material with surface grafted with beta-cyclodextrin, and preparation and application thereof, belonging to the field of environmental novel functional adsorption materials. The material uses polystyrene fiber as a carrier; the surface of the polystyrene fiber is a layer of polydopamine nanoparticles; and the beta-cyclodextrin is grafted ontodopamine nanoparticles through amido bonds. With the method provided by the invention, a polystyrene fiber material is firstly prepared through electrospinning, and dopamine generates in-situ self-polymerization on the surface of the polystyrene fiber material, so the surface of the polystyrene fiber material is rich in a large amount of active amino groups; meanwhile, chemical crosslinking is generated between carboxylated beta-cyclodextrin and polydopamine on the surface of the polystyrene fiber material; and through formation of the amido bonds, the beta-cyclodextrin is bonded onto an electrospun polystyrene fiber material. The beta-cyclodextrin in the material is located on the surface of polystyrene fiber, and the cavity structure of the beta-cyclodextrin remains intact, so the adsorption performance of the material to phenolphthalein is effectively improved.

Description

technical field [0001] The invention relates to a polystyrene fiber adsorption material grafted with β-cyclodextrin on the surface, its preparation and application, and belongs to the field of new environmental functional adsorption materials. Background technique [0002] With the rapid development of industry and urbanization, the problem of environmental pollution is becoming more and more serious. As industrial raw materials and intermediates, phenolphthalein is widely used in the fields of medicine, dyes, pesticides, preservatives and transportation, but due to its high toxicity , non-degradable and stable chemical properties, etc. If the phenolphthalein in the discharged wastewater is not treated effectively in time, it will have a huge negative impact on human health and the ecological environment. At present, the common treatment methods for phenolphthalein include: adsorption method, biotransformation method and chemical oxidation method. Among them, the adsorption...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/34
CPCB01J20/267C02F1/286C02F2101/345
Inventor 张爱英高宁杨家乐岳江昱冯增国
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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