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Silane coupling olefin polymer modified porous composite material and preparation method

A porous composite material, olefin polymer technology, applied in the field of materials, can solve problems such as limited application range

Active Publication Date: 2015-12-02
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These studies are only carried out in some microporous or mesoporous materials, and the scope of application is limited. There are few reports on grafted polymers in macroporous materials, and silicon-based vesicle materials are used as research objects for polymer grafting applications. No research report on methane adsorption has been found so far

Method used

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  • Silane coupling olefin polymer modified porous composite material and preparation method
  • Silane coupling olefin polymer modified porous composite material and preparation method
  • Silane coupling olefin polymer modified porous composite material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150] 1. Synthesis of free radical initiators with silane coupling groups

[0151] First take a 500mL dry Schrank bottle and vacuumize it, replace nitrogen to remove oxygen, take 100mL dichloromethane, 17mL triethylamine and 13mL butenol into the Schrank bottle, then put the mixture in an ice-water bath at 0°C, and stir at the same time Using a separatory funnel, 12 mL of dibromoisobutyryl bromide was added dropwise. After 3 h of reaction, the ice-water bath was removed, and the mixture was stirred at room temperature for 10 h. After the reaction was completed, hydrochloric acid solution (0.1mol / L, 100mL) was added to quench, and then 100mL chloroform was added to extract twice, and the extract was then saturated with sodium bicarbonate solution (0.1mol / L, 100mL×2) and deionized water (100mL ×2) to wash, then add an appropriate amount of anhydrous magnesium sulfate to dry and filter. Finally, the obtained sample was analyzed and purified by column chromatography to obtain t...

Embodiment 2

[0163] Synthetic initiator, grafting initiator are all identical with embodiment 1.

[0164] Initiate a free radical polymerization reaction in the material channel, change the ratio of each reactant, add according to the molar ratio of bromine in the vesicle material: CuBr: methyl methacrylate: PMEDTA / bpy=1:1:200:3, the reaction The process was the same as in Example 1 to obtain the second composite material. The second composite material was treated with HF, and the polymer was chemically cut out for GPC analysis. The molecular weight Mn of the polymer obtained was 31530, and the molecular weight distribution index was 1.20. The results showed that the molecular weight of the polymer increased correspondingly with the increase of the number of monomers, which indicated that the polymer was successfully grafted on the inner surface of the silicon-based vesicle material.

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Abstract

The invention provides a silane coupling olefin polymer modified porous composite material and a preparation method. A silane coupling olefin polymer has a structure shown in a formula (I) in the specification, wherein hydroxy on the surface of an inner duct of a silicon-based vesicle material is connected with the silane coupling olefin polymer; R1 is H or CH3; R2 is COOCH3, COOC4H9 or phenyl; R3 and R4 are respectively C1-C3 alkyl independently; X2 is Cl, Br and I; and m is an integer between 3 and 6. The method has the advantages that the polymer is grafted in the duct of the vesicle material in situ, so that the diameter of the macropore of the vesicle material can be effectively regulated, the microenvironment of the duct can be changed and the duct of the modified vesicle material can be endowed with certain elasticity.

Description

technical field [0001] The invention relates to the field of materials, in particular to a silane-coupled olefin polymer-modified porous composite material and a preparation method. Background technique [0002] Using a porous material as a substrate, one end of the polymer chain is fixed on the surface to form a polymer assembly structure. When the polymer chain extends outward perpendicular to the surface, it can form a so-called "polymer brush". " configuration. This porous material has attracted widespread attention due to its potential applications in the fields of adsorption, bioseparation, drug release, catalysis, chromatographic materials, sensors, and pigments. [0003] As one of the porous materials, the vesicle material has a large pore size and pore volume, and has abundant, uniform, and ordered channels, so the polymer brushes can be grafted on the surface of the channels to make the channels have better options. performance and practicality. At present, ther...

Claims

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Application Information

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IPC IPC(8): C08F292/00C08F220/14B01J20/26B01J20/30
Inventor 任申勇张卡张建华曾鹏晖申宝剑郭巧霞
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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