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Preparation method of porous cyclodextrin polymer

A technology of cyclodextrin polymer and epichlorohydrin, applied in chemical instruments and methods, and other chemical processes, can solve the problems of low processing efficiency, reduced mass transfer rate, large amount of raw material reagents, etc., and achieve high specific surface area , good dispersion effect

Inactive Publication Date: 2016-01-27
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
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Problems solved by technology

However, the preparation of cyclodextrin microspheres by the emulsion template method still has the problems of cumbersome preparation steps, large amount of raw material reagents, and high cost.
In addition, cyclodextrin polymers prepared by emulsion polymerization usually form hard lumps when dried, which makes subsequent processing difficult such as crushing, and its dense structure reduces the mass transfer rate during application, resulting in low processing efficiency

Method used

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  • Preparation method of porous cyclodextrin polymer
  • Preparation method of porous cyclodextrin polymer
  • Preparation method of porous cyclodextrin polymer

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Embodiment 1

[0020] (1) Take 11.35g (0.01mol) of β-CD in a three-neck round bottom flask, add 17.6mL (22.44g) of NaOH solution with a mass fraction of 25%, and then place the flask in a constant temperature water bath and gradually heat up to 60 ℃, supplemented by stirring during the heating process, until β-CD is completely dissolved;

[0021] (2) Continue to place the flask in a constant temperature water bath to maintain a reaction temperature of 60°C, slowly add 5 mL of epichlorohydrin to the solution at a rate of 1 mL / 6 min through a constant pressure dropping funnel, and make it Dissolution occurs, so that the cross-linking effect can be fully exerted, so that β-cyclodextrin oligomers are formed in the reaction system; after the dropwise addition, continue to stir and react at a speed of 400-600r / min for 60min;

[0022] (3) Continue to maintain the reaction temperature of 60°C, add 1g (0.01mol) CaCO to the solution 3 , then add 5mL epichlorohydrin again, and continue to stir and rea...

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Abstract

The invention discloses a preparation method of a porous cyclodextrin polymer. The preparation method comprises steps as follows: (1), beta-CD (cyclodextrin) is added to a NaOH solution with certain concentration, and the mixture is heated and stirred until beta-CD is completely dissolved; (2), a cross-linking agent is slowly and dropwise added to the solution, the temperature of the solution is maintained, and the mixture is continuously stirred to react for 30-60 min; (3), CaCO3 and an appropriate quantity of cross-linking agents are sequentially added to the solution, the temperature of the solution is maintained, and the mixture is continuously stirred until the solution solidifies; (4), CaCO3 in a solidified product is removed, and vacuum drying is performed after the product is washed with distilled water. The preparation method has the advantages that obtained polymer microspheres have a higher specific surface area, and the state of pores can be controlled by changing the shapes, the sizes and the quantity of CaCO3 particles; the problems that a preparation process adopting an emulsion template method is tedious, a large quantity of raw materials of a reagent are required and the cost is high are solved; the obtained polymer microspheres have good dispersity and have a loose structure, the problem of difficulty in crushing after drying is solved, and meanwhile, the mass transfer rate is effectively increased during application.

Description

technical field [0001] The invention relates to the field of porous polymer preparation, in particular to a preparation method of porous cyclodextrin polymer. Background technique [0002] β-Cyclodextrin (β-Cyclodextrin, referred to as β-CD) is currently the most widely used cyclodextrin, β-CD is hydrophilic on the outside and hydrophobic in the cavity, and has similar reactivity to cyclodextrin (CD) , can form inclusion complexes with guest molecules, and include some volatile, easy to decompose, easy to pollute, and difficult to store guest molecules, thereby avoiding the occurrence of the above problems. In the preparation of porous polymers, the template method is considered to be one of the most convenient and effective methods. The structure and morphology of the polymerized product can be easily adjusted by changing the type, size, shape and other parameters of the template. The emulsion template method is one of the most important methods. At present, the preparati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/26C08J3/24C08L5/16C08B37/16B01J20/26B01J20/30
Inventor 刘泽华杨志恒储圣祥程小娟黄鹏飞张帅陈月
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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