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

A porous polymer, click chemistry technology, applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of high energy consumption, long time, less porous polymer, etc., and achieves simple preparation process, simple steps, and increased specific surface area. Effect

Inactive 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

However, the traditional method of preparing polymer microspheres is time-consuming 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.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: Add 0.1 polyvinylpyrrolidone (PVP), 100g water, 1.53g pentaerythritol tetrakis (3-mercapto propionate) (PETMP) and 1.38g isophorone diisocyanate successively in the container that magnetic stirrer is housed (IPDI), 1g liquid paraffin and 3g chloroform (CHCl 3 ). At the same time, the stirrer was turned on at a speed of 300 rpm, and the stirring time was 10 min. The triethylamine catalyst was added, and the stirring was stopped after 1 min. After standing still for 6 hours, it was centrifuged, washed with petroleum ether, absolute ethanol and water successively, freeze-dried and then freeze-dried to obtain porous polymer microspheres.

Embodiment 2

[0033] Embodiment 2: Add 0.5 polyvinylpyrrolidone (PVP), 100g water, 1.53g pentaerythritol tetrakis (3-mercapto propionate) ester (PETMP) and 1.38g isophorone diisocyanate successively in the container that magnetic stirrer is housed (IPDI), 1g liquid paraffin and 3g chloroform (CHCl 3 ). At the same time, the stirrer was turned on at a speed of 300 rpm, and the stirring time was 10 min. The triethylamine catalyst was added, and the stirring was stopped after 1 min. After standing still for 6 hours, it was centrifuged, washed with petroleum ether, absolute ethanol and water successively, freeze-dried and then freeze-dried to obtain porous polymer microspheres.

Embodiment 3

[0034] Embodiment 3: Add 1g polyvinylpyrrolidone (PVP), 100g water, 1.53g pentaerythritol tetrakis (3-mercaptopropionate) ester (PETMP) and 1.38g isophorone diisocyanate successively in the container that magnetic stirrer is housed (IPDI), 1g liquid paraffin and 3g chloroform (CHCl 3 ). At the same time, the stirrer was turned on at a speed of 300 rpm, and the stirring time was 10 min. The triethylamine catalyst was added, and the stirring was stopped after 1 min. After standing still for 6 hours, it was centrifuged, washed with petroleum ether, absolute ethanol and water successively, freeze-dried and then freeze-dried to obtain porous polymer microspheres.

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Abstract

The invention relates to a method using click chemistry to fast prepare micron-sized porous polymer microspheres. The method is characterized in that polyvinyl pyrrolidone and water are used as the continuous phase and multifunctional mercaptan, multifunctional isocyanate and a pore-forming agent are used as the dispersion phase to perform fast reaction under normal temperature and normal pressureto generate the porous polymer microspheres. The method has the advantages that the method is different from a traditional method for preparing the porous polymer microspheres, the method uses the click chemistry method, the reaction is completed in several seconds, and the method is simple in preparation process, fast and efficient in reaction, green and environmentally friendly and easy to achieve industrial production; by controlling monomer functionality proportion, surface functionalization can be achieved easily; compared with other preparation methods, the method is mild in reaction conditions, simple in steps, fast in synthesizing, beneficial to large-scale industrial production and the like; compared with equivalent-size common microspheres prepared by a click chemistry method, the specific surface area of the polymer microspheres formed by the method is increased by more than 4 times.

Description

technical field [0001] The invention belongs to a method for preparing micron-scale porous polymer microspheres, and relates to a method for rapidly preparing micron-scale porous polymer microspheres by click chemistry, using polyvinylpyrrolidone and water as continuous phases, multifunctional mercaptans, multifunctional The high-strength isocyanate and porogen are dispersed phases, and at normal temperature and pressure, they react rapidly to form porous polymer microspheres. By adjusting the stirring speed, the diameter of the polymer microspheres is changed in the range of 10-200um. 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 spec...

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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