Modified adsorption resin and preparation method thereof

An adsorption resin and modification technology, applied in the field of preparation of polymer separation materials, can solve the problems of poor adsorption performance, poor hydrophilicity, insufficient selectivity, etc., and achieve the effect of stable quality

Active Publication Date: 2013-09-25
BENGBU LIAOYUAN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention aims at the problems that the surface of the existing commercialized macroporous adsorption resin is hydrophobic, poor in hydrophilicity, poor in adsorption performance to certain polar components, and insufficient in selectivity, and is specially designed to prepare polar groups and protonizable resins. Modified Adsorbent Resin with Coexistence of Tertiary Amino Groups

Method used

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  • Modified adsorption resin and preparation method thereof
  • Modified adsorption resin and preparation method thereof
  • Modified adsorption resin and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0033] A modified adsorption resin in which a polar group and a protonatable tertiary amine group coexist and a preparation method thereof, comprising the following two steps:

[0034] step 1:

[0035] Add 800 g of deionized water and 8.0 g of gelatin to a 2000 mL three-neck flask equipped with a stirrer, reflux condenser, and thermometer, soak overnight, heat the water bath to 45°C the next day, and prepare the pre-prepared oil phase (single Divinylbenzene 100g DVB content of 55%, mixed with 200ml porogen toluene and initiator BPO 1.0g), adjust the stirring speed to disperse the organic phase into oil droplets with appropriate particle size Slowly raise the temperature to 77-79°C for 2 hours, then raise the temperature to 82-85°C for 3 hours, then raise the temperature to 90-92°C for 6 hours, then stop the reaction. Filter out the resin with a gauze bag while it is hot, wash the resin with a large amount of hot water until the washing water is clear, wash with acetone, extra...

Embodiment 2

[0039] By the same method as in Example 1, except that the monomeric industrial divinylbenzene DVB content is 70% (the ingredients are 40 parts of 55% divinylbenzene and 60 parts of 80% divinylbenzene), and the reaction process is the same as in Example 1.

[0040] Elemental analysis and determination can be calculated, the grafting rate of MDAEMA is 14.3%, the alkali exchange capacity is 0.82mmol / g, and the BET specific surface area is 680m 2 / g.

Embodiment 3

[0042] According to the same method of embodiment 1, only monomer industrial divinylbenzene DVB content is 80%, and the reaction process is the same as embodiment 1.

[0043] Elemental analysis and determination can be calculated, the grafting rate of MDAEMA is 19.5%, the alkali exchange capacity is 1.16mmol / g, and the BET specific surface area is 760m 2 / g.

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Abstract

The invention relates to a modified adsorption resin and a preparation method thereof, and concretely relates to a modified adsorption resin simultaneously having a polar group and a protonatable tertiary amine group, and a preparation method thereof. The method comprises the following steps: 1, suspension polymerization balling: preparing a polystyrene resin through a routine resin preparation process; and 2, grafting reaction and residual double bond post-crosslinking: swelling the resin obtained in step 1 with an organic solvent according to a case that 6-10L of the organic solvent is needed by each kilogram of the resin, adding a polar monomer and an initiator, carrying out a stirring reaction at 60-80DEG C for 4-8h, extracting out the obtained mother liquid, washing the obtained resin with a grafting reaction solvent twice, supplementing a crosslinking reaction solvent, adding a Fourier catalyst, carrying out a stirring reaction at 60-80DEG C for 4-8h, and washing the obtained resin after reaction ending to obtain the modified adsorption resin simultaneously having a polar group and a protonatable tertiary amine group. The specific surface of the resin is increased, so the introduction of the polar group and the maintenance of a high specific surface are simultaneously realized.

Description

Technical field: [0001] The invention belongs to the preparation technology of polymer separation materials, and relates to a modified polystyrene type adsorption resin and its preparation method, which is characterized in that the modified adsorption resin contains both polar groups and protonatable tertiary amines group. Background technique: [0002] Porous polystyrene-stilbene cross-linked resin microspheres, as polymer adsorbents, have been more and more widely used in the fields of polymer adsorption and separation materials, chromatographic packing, enzyme immobilization, biomedicine, and cosmetics. [0003] For polystyrene-type adsorption resins, the main components of industrial divinylbenzene, which are the raw materials for preparing adsorption resins, are: p-divinylbenzene, m-divinylbenzene, p-ethylstyrene and m-ethylstyrene, After polymerization, a cross-linked polymer network structure is obtained. Studies have shown that the content of divinylbenzene exceeds ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30
Inventor 崔建
Owner BENGBU LIAOYUAN NEW MATERIAL
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