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Preparation method of polyacrylate macroporous cross-linked polymer and product

A polyacrylate, cross-linked polymer technology, applied in chemical instruments and methods, other chemical processes and other directions, can solve the problems of poor oil absorption, high cost, poor mechanical strength of macroporous polymers, and achieves simple preparation method, The effect of low cost, convenient porosity and pore morphology

Active Publication Date: 2015-07-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by this initiating system (APS and TEMED redox system), all cryopolymerization methods today are limited to the preparation of macroporous hydrogels, while other dry (non-swelling) macroporous There is no precedent for polymer materials prepared by cryopolymerization
[0010] The macroporous polymer prepared by the existing method has poor oil absorption, poor mechanical strength, cannot be reused, and has high cost

Method used

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  • Preparation method of polyacrylate macroporous cross-linked polymer and product
  • Preparation method of polyacrylate macroporous cross-linked polymer and product
  • Preparation method of polyacrylate macroporous cross-linked polymer and product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (1) Dissolve 0.2mlMMA, 0.02mlEGDMA and 10mgBPO in 1.8mlDMSO at 20°C to form a solution, add 0.01mlDMA, shake to obtain a homogeneous solution, wherein the mass fraction of the monomer in the solution is 10wt%;

[0054] (2) Put the solution obtained in step (1) in a low-temperature box to react at -10°C for 24 hours to obtain an intermediate product;

[0055] (3) Place the intermediate product in step (2) at room temperature, and after the crystallized solution melts, compress the intermediate product to squeeze out the solvent in the pores; then soak it in deionized water for 72 hours, and change it every 4 hours Deionized water to ensure that the deionized water completely replaces the solvent in the sample, and finally dried under reduced pressure to obtain a macroporous cross-linked polymer.

Embodiment 2

[0057] (1) Dissolve 0.2mlMMA, 0.02mlEGDMA and 10mgBPO in 1.8mlDMSO at 20°C to form a solution, add 0.01mlDMA, shake to obtain a homogeneous solution, wherein the mass fraction of the monomer in the solution is 10wt%;

[0058] (2) Place the solution obtained in step (1) in a low-temperature box to react at -20°C for 24 hours to obtain an intermediate product;

[0059] (3) Place the intermediate product in step (2) at room temperature, and after the crystallized solution melts, compress the intermediate product to squeeze out the solvent in the pores; then soak it in deionized water for 72 hours, and change it every 4 hours Deionized water to ensure that the deionized water completely replaces the solvent in the sample, and finally dried under reduced pressure to obtain a macroporous cross-linked polymer.

Embodiment 3

[0061] (1) Dissolve 0.2mlMMA, 0.02mlEGDMA and 10mgBPO in 1.8mlDMSO at 20°C to form a solution, add 0.01mlDMA, shake to obtain a homogeneous solution, wherein the mass fraction of the monomer in the solution is 10wt%;

[0062] (2) Put the solution obtained in step (1) in a low-temperature box to react at -30°C for 24 hours to obtain an intermediate product;

[0063] (3) Place the intermediate product in step (2) at room temperature, and after the crystallized solution melts, compress the intermediate product to squeeze out the solvent in the pores; then soak it in deionized water for 72 hours, and change it every 4 hours Deionized water to ensure that the deionized water completely replaces the solvent in the sample, and finally dried under reduced pressure to obtain a macroporous cross-linked polymer.

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Abstract

The invention discloses a preparation method of a polyacrylate macroporous cross-linked polymer. The preparation method comprises the steps: (1) dissolving an acrylic monomer and an oil-soluble crosslinking agent in an oil-soluble solvent to form a precursor solution, wherein the weight percentage of the monomer in the precursor solution is 5wt%-20wt%, and the weight percentage of an initiating agent in the precursor solution is 0.1wt%-1wt%; (2) adding the initiating agent, putting the precursor solution at the temperature below the melting point of the solvent, and carrying out polymerization reaction to obtain an intermediate product; and (3) putting the intermediate product obtained in the step (2) at the temperature below the melting point of the solvent, and after fusing the solvent, compressing, washing, soaking and drying so as to remove the solvent, thus obtaining the macroporous cross-linked polymer. The preparation method disclosed by the invention has the advantages that selectable raw materials are sufficient and low in cost, the preparation method is suitable for industrial enlargement and application, and the prepared macroporous cross-linked polymer is small in relative density and high in specific strength, porosity and shape recovery percentage.

Description

technical field [0001] The invention relates to the field of preparation of porous polymers, in particular to a preparation method and product of polyacrylate macroporous crosslinked polymers. Background technique [0002] Porous polymers are a class of polymer materials containing a large number of pores. This porous solid material is mainly composed of a continuous solid phase forming the basic framework of the material itself and a fluid phase forming pores. The fluid phase medium is gas (in some special occasions it can be vacuum) or liquid. Polymer porous materials have attracted more and more attention from academia and industry due to the combination of the properties of porous materials and polymers. Its main advantages are: (1) different porous structures and high specific surface areas can be obtained through material selection and process design; (2) the preparation process is simple and diverse. The material can be obtained not only in the form of a thin film, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F222/14C08J9/28B01J20/26B01J20/30
Inventor 杨苗吴晶军赵骞谢涛
Owner ZHEJIANG UNIV
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