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Method using click chemistry to prepare micron-sized functional porous polymer microspheres

A technology of porous polymer and click chemistry, which is applied in the field of preparation of polymer material microspheres, can solve the problems affecting the later application of microspheres, increasing the cost of material preparation, and less porous polymers, so as to facilitate large-scale industrial production, Easy surface functionalization and fast synthesis

Active Publication Date: 2019-07-26
NORTHWESTERN POLYTECHNICAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is cumbersome and greatly increases the cost of material preparation. At the same time, some porogens remain in the closed pores inside the polymer microspheres, which seriously affects the later application of the microspheres.
In addition, the traditional preparation method takes a long time and consumes a lot of energy, which urgently needs to be improved.
[0004] So far, there are many reports on the preparation of polymer microspheres by click polymerization, but few reports on the preparation of porous polymers by click polymerization.
The inventor's research group has reported the preparation of microspheres by click suspension polymerization plus porogen, but there is no report on the preparation of porous microspheres by click polymerization without porogen

Method used

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  • Method using click chemistry to prepare micron-sized functional porous polymer microspheres
  • Method using click chemistry to prepare micron-sized functional porous polymer microspheres
  • Method using click chemistry to prepare micron-sized functional porous polymer microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: Add 5g polyvinylpyrrolidone (PVP), 1g chloroform (CHCl) successively in the container that magnetic stirrer is housed 3 ), 99g absolute ethanol, 1.53g pentaerythritol tetrakis (3-mercaptopropionate) ester (PETMP) and 1.38g isophorone diisocyanate (IPDI) simultaneously open agitator, rotating speed is 200rpm, and stirring time is 30min, stand Centrifuge after 6 hours, wash with absolute ethanol and water successively, freeze-dry and then freeze-dry porous polymer microspheres.

Embodiment 2

[0033] Embodiment 2: Add 5g polyvinylpyrrolidone (PVP), 2g chloroform (CHCl) successively in the container that magnetic stirrer is housed 3 ), 98g absolute ethanol, 1.53g pentaerythritol tetrakis (3-mercaptopropionate) ester (PETMP) and 1.38g isophorone diisocyanate (IPDI) simultaneously open agitator. The rotational speed is 200 rpm, the stirring time is 30 min, centrifuged after standing for 6 h, washed with absolute ethanol and water successively, freeze-dried and then freeze-dried to have porous polymer microspheres.

Embodiment 3

[0034] Embodiment 3: Add 5g polyvinylpyrrolidone (PVP), 3g chloroform (CHCl) successively in the container that magnetic stirrer is housed 3 ), 97g absolute ethanol, 1.53g pentaerythritol tetrakis (3-mercaptopropionate) ester (PETMP) and 1.38g isophorone diisocyanate (IPDI) simultaneously open agitator. The rotational speed is 200 rpm, the stirring time is 30 min, centrifuged after standing for 6 h, washed with absolute ethanol and water successively, and the porous polymer microspheres are freeze-dried.

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Abstract

The invention relates to a method using click chemistry to prepare micron-sized functional porous polymer microspheres. The method is characterized in that the solution of polyvinyl pyrrolidone and apolar solvent is used as the continuous phase and the multifunctional mercaptan, multifunctional isocyanate and another polar solvent are used as the dispersion phase to perform fast reaction under normal temperature and normal pressure to generate the porous polymer microspheres, and the diameter of the polymer microspheres is within 1-10 micrometers. The method has the advantages that compared atraditional porous polymer microsphere preparation method, the method uses the click chemistry method, does not need a pore-forming agent and is simple in preparation process, fast and efficient in reaction, green and environmentally friendly and easy to achieve industrial production; nanoscale spheres are generated through click chemistry method first, and the spheres are allowed to have reaction through surface functional groups to allow the spheres to be connected together to form the micron-sized spheres; ducts are formed among the spheres during sphere connection, and the porous polymermicrospheres uniform in size are formed finally.

Description

technical field [0001] The invention belongs to a preparation method of polymer material microspheres, and relates to a method for rapidly preparing micron-scale functionalized porous polymer microspheres by click chemistry. Background technique [0002] With the development of material science, polymer microspheres with high strength, large specific surface area, easy functionalization, and light weight are more and more favored by researchers engaged in the research of carriers and separation and purification of functional polymer materials. How to control the structure of the polymer so that it has a high specific surface area and is easy to be functionalized is a difficult point in the preparation of materials. As an efficient and environmentally friendly chemical reaction, click chemistry has made a lot of achievements in the field of polymer microsphere preparation, but it is still very difficult to prepare porous microspheres by using click chemistry. Generally, the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/38B01J13/14
CPCB01J13/14C08G18/3876
Inventor 张秋禹张国贤胡石林刘亚明
Owner NORTHWESTERN POLYTECHNICAL UNIV
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