A kind of preparation method and product of polyacrylate macroporous crosslinked polymer

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, and poor mechanical strength of macroporous polymers, and achieves simple preparation methods, The effect of low cost, convenient porosity and pore morphology

Active Publication Date: 2018-02-23
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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  • A kind of preparation method and product of polyacrylate macroporous crosslinked polymer
  • A kind of preparation method and product of polyacrylate macroporous crosslinked polymer
  • A kind of preparation method and product of polyacrylate macroporous crosslinked polymer

Examples

Experimental program
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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 polyacrylate macroporous cross-linked polymers, comprising the following steps: (1) dissolving acrylate monomers and oil-soluble cross-linking agents in oil-soluble solvents to form a precursor solution, wherein The mass fraction of the monomer in the precursor solution is 5wt% to 20wt%, and the mass fraction of the initiator in the precursor solution is 0.1wt% to 1wt%; (2) adding the initiator and placing the precursor solution below the melting point of the solvent to perform a polymerization reaction to obtain an intermediate product; (3) placing the intermediate product obtained in step (2) above the melting point of the solvent, compressing after the solvent is melted, Washing, soaking and drying to remove the solvent yields a macroporous crosslinked polymer. The preparation method of the present invention has sufficient raw materials to choose, low cost, and is suitable for industrial scale-up applications. The prepared macroporous cross-linked polymer has low relative density, high specific strength, high porosity and high shape recovery rate.

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 Patents(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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