A kind of preparation method of highly cross-linked hydrophobic organic monolithic material

A monolithic material and organic technology, applied in the field of preparation of highly cross-linked hydrophobic organic monolithic materials, can solve the problems of cumbersome process, sensitive pH value, difficult to control the rate of radical polymerization, etc., and achieve good permeability, strong hydrophobicity, Easy-to-control effects

Active Publication Date: 2018-03-02
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this silicon-based hybrid monolithic material needs to be prepared through multiple steps, and the process is still relatively cumbersome and sensitive to the pH value. In addition, the rate of free radical polymerization used is difficult to control, so it is difficult to control in the preparation process. There is still a big deficiency in the repeatability

Method used

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  • A kind of preparation method of highly cross-linked hydrophobic organic monolithic material
  • A kind of preparation method of highly cross-linked hydrophobic organic monolithic material
  • A kind of preparation method of highly cross-linked hydrophobic organic monolithic material

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Experimental program
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Effect test

Embodiment 1

[0029] 1) Add 30 mg of DPEPA reagent to the UV transparent centrifuge tube.

[0030] 2) Add 17.4 mg of functional monomer LMA to the above-mentioned ultraviolet transparent centrifuge tube.

[0031] 3) Add 140 μL of n-hexanol and 20 μL of ethylene glycol into the above-mentioned UV transparent centrifuge tube.

[0032] 4) Add 0.15 mg of photoinitiator to the above-mentioned ultraviolet transparent centrifuge tube.

[0033] 5) Ultrasonicate the above-mentioned centrifuge tube for 5 minutes to mix the various components therein evenly, and remove the dissolved oxygen dissolved therein.

[0034] 6) Introduce 1 μL of the pre-polymerization solution obtained in step 5) into a 75 μm (inner diameter) UV-transparent capillary that has been previously activated with 3-(trimethoxysilyl)propyl methacrylate with a syringe, and then Both ends of the capillary were sealed with silica gel, and then the UV transparent centrifuge tube containing the remaining mixed solution was sealed.

[0...

Embodiment 2

[0038] 1) Add 25 mg of DPEPA reagent to the UV transparent centrifuge tube.

[0039] 2) Add 22.4 mg of functional monomer LMA to the above-mentioned ultraviolet transparent centrifuge tube.

[0040] 3) Add 140 μL of n-hexanol and 20 μL of ethylene glycol into the above-mentioned UV transparent centrifuge tube.

[0041]4) Add 0.15 mg of photoinitiator to the above-mentioned ultraviolet transparent centrifuge tube.

[0042] 5) Ultrasonicate the above-mentioned centrifuge tube for 5 minutes to mix the various components therein evenly, and remove the dissolved oxygen dissolved therein.

[0043] 6) Introduce 1 μL of the pre-polymerization solution obtained in step 5) into a 75 μm (inner diameter) UV-transparent capillary that has been previously activated with 3-(trimethoxysilyl)propyl methacrylate with a syringe, and then Both ends of the capillary were sealed with silica gel, and then the UV transparent centrifuge tube containing the remaining mixed solution was sealed.

[00...

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Abstract

The invention relates to the field of macromolecules, in particular to a method for preparing highly crosslinked porous organic monolithic materials based on photoinitiated free radical polymerization. The present invention dissolves acrylates containing multiple unsaturated double bonds, functional monomers containing unsaturated double bonds and initiators in a porogenic solvent ultrasonically, and undergoes free-radical polymerization under ultraviolet light irradiation. reaction, in-situ formation of porous organic monoliths, which can be prepared into organic porous monoliths with different surface properties and functions. The preparation method has the advantages of simple and fast operation and fast reaction speed. In addition, different organic functional monomers and porogen systems can be selected according to different application requirements to prepare a series of porous organic materials with different physical and chemical properties. overall material.

Description

technical field [0001] The invention relates to a method for preparing organic porous monolithic materials based on free radical reaction, specifically, dipentaerythritol penta- / hexa-acrylic acid containing unsaturated double bonds, functional monomer lauryl methacrylate and initiator in a porogenic solvent Ultrasonic dissolution in medium, and then free radical polymerization under ultraviolet light irradiation to form porous organic monolithic materials in situ. By adjusting the concentration of monomers and the ratio of porogens, organic materials with different surface properties and functions can be prepared. porous monolithic material. Background technique [0002] Monolithic material is a new type of stationary phase developed in recent years. Its structure has high permeability, porosity and large specific surface area, so that it can achieve high efficiency, high throughput and low back pressure in separation analysis. Effect, known as the fourth-generation chromat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/20C08F220/18C08F2/48C08J9/28
Inventor 邹汉法欧俊杰张海洋
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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