Method for preparing modified oil-absorptive resin immobilized with cyclodextrin molecules

An oil-absorbing resin and cyclodextrin technology, applied in the field of functional polymer materials, can solve the problems of volatilization of acryloyl chloride, limitation of cyclodextrin immobilization and the like, and achieve the effects of increased adsorption capacity, stable product properties and low production cost

Active Publication Date: 2015-04-08
HUIZHOU RES INST OF SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method uses a strong alkali solution as a reaction solvent for cyclodextrin modification, causing a large amount of acryloyl chloride to volatilize, and there is a certain degree of safety.
In addition, the immobilization capacity of cyclodextrin is also limited.

Method used

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  • Method for preparing modified oil-absorptive resin immobilized with cyclodextrin molecules
  • Method for preparing modified oil-absorptive resin immobilized with cyclodextrin molecules
  • Method for preparing modified oil-absorptive resin immobilized with cyclodextrin molecules

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Experimental program
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Embodiment 1

[0037] The synthesis of embodiment 1 modified cyclodextrin:

[0038] Dissolve 8.0g of β-cyclodextrin (β-CD) in 30mL of N'N-dimethylformamide (DMF) treated with anhydrous sodium sulfate, then add 4.2mL of triethylamine (TEA), stir well , add 1.15mL acryloyl chloride at 0-5°C, and react at room temperature for 5h after the dropwise addition is completed. After the reaction was completed, the precipitate was filtered off, the filtrate was precipitated with acetone, filtered with suction, and the obtained powder was dried in a fume hood to obtain the modified β-cyclodextrin product β-CD-6-A with a yield of about 80% %.

Embodiment 2

[0039] The synthesis of embodiment 2 modified cyclodextrins:

[0040] Dissolve 8.0g of β-cyclodextrin (β-CD) in 15mL of pyridine solution, after stirring, add 1.15mL of acryloyl chloride at 0-5°C, then slowly raise the temperature, and continue the reaction at room temperature for 12h. Afterwards, the reaction solvent was removed under reduced pressure until a white product was formed, and then ethanol was added to the product to wash several times to obtain the modified β-cyclodextrin β-CD-6-A with a yield of about 65%. Its infrared detection spectrogram is shown in the accompanying drawing.

Embodiment 3

[0041] The synthesis of embodiment 3 oil-absorbing resins:

[0042] Dissolve 0.75 g of polyvinyl alcohol in 200 mL of distilled water, then add 1.5 g of modified β-cyclodextrin β-CD-6-A to the solution, and ultrasonically dissolve it for 10 minutes. Then at 35-60°C, add 0.4g N'N-methylenebisacrylamide to the solution and stir quickly, then add 18.5g butyl methacrylate, 5.0g acrylic acid, 7.5g tris A mixture of methyl chloride and 0.15 g of benzoyl peroxide was reacted at 40°C for 10 min. Then the temperature was raised to 80°C, and the reaction was carried out for 8h. The obtained product was cooled, filtered, washed several times with warm water at 60-80°C, and dried in a drying oven at 60°C for 6 hours. The product was then placed in a vacuum oven at 60° C. and dried under reduced pressure for 12 hours to obtain a white granular oil-absorbing resin.

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Abstract

The invention discloses a method for preparing modified oil-absorptive resin immobilized with cyclodextrin molecules. The method comprises the following steps: modifying hydroxyls of cyclodextrin molecules by taking cyclodextrin molecules, and acryloyl chloride or other acylation reagents as raw mateials in the presence of an organic base and taking an organic solvent or an organic base as a reaction medium, so as to synthesize 6-acryloyl cyclodextrin; dissolving CD-6-A in an aqueous solution under the ultrasonic action, sequentially adding a monomer, an initiator, a cross-linking agent and a pore-foaming agent into the aqueous solution, carrying out a suspension polymerization reaction to obtain the modified oil-absorptive resin, and drying under reduced pressure, thereby obtaining the product. The adsorbing capacity of the modified oil-absorptive resin containing the cyclodextrin molecules on methylbenzene is close to 45g / g, the adsorbing capacity on trichloromethane reaches 80g / g, and the resin has a very obvious effect of cleaning floating oil on the water surface. The modified oil-absorptive resin disclosed by the invention has the advantages that the preparation process is simple, the production cost is low, the adsorbing capacity is large, the oil absorption efficiency is high, the rein can be repeatedly used, and the adsorption-desorption process is simple, green and environment-friendly.

Description

technical field [0001] The invention belongs to the field of functional polymer materials, in particular to a preparation method of modified oil-absorbing resin containing cyclodextrin molecules. Background technique [0002] The rapid development of the petroleum industry has brought human beings into an era of great material abundance, but it has also brought a series of environmental problems. In the process of oil extraction, transportation, processing, etc., it will inevitably cause oil leakage, which will cause serious pollution to water bodies. Effective removal of oil pollution in water bodies has become an important issue to be solved first. [0003] At present, quite a few methods have been reported for the removal of oily pollutants in water. Among them, the adsorption method, as a treatment method with convenient operation, high adsorption efficiency and large adsorption capacity, has become the preferred method in the treatment of river and marine environmenta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/10C08F2/18C08B37/16B01J20/26B01J20/28B01J20/30C02F1/28C02F1/40
Inventor 纪红兵刘金平杨祖金
Owner HUIZHOU RES INST OF SUN YAT SEN UNIV
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