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Hyperbranched polymer modified graphene oxide in water phase and method for preparing hyperbranched polymer modified graphene oxide

A technology of hyperbranched polymers and graphene, applied in chemical instruments and methods, medical preparations of non-active ingredients, pharmaceutical formulations, etc., can solve problems such as unfavorable large-scale applications, and achieve a simple and easy reaction process. The effect of mild conditions

Active Publication Date: 2018-04-24
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the polymerization or grafting reaction is often carried out in the organic phase or the system with high temperature, which is not conducive to large-scale application

Method used

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  • Hyperbranched polymer modified graphene oxide in water phase and method for preparing hyperbranched polymer modified graphene oxide
  • Hyperbranched polymer modified graphene oxide in water phase and method for preparing hyperbranched polymer modified graphene oxide
  • Hyperbranched polymer modified graphene oxide in water phase and method for preparing hyperbranched polymer modified graphene oxide

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Embodiment 1

[0023] The specific method of hyperbranched polymer modified graphene oxide is as follows:

[0024] (1) Take 30 mg of graphene oxide powder, add 30 mL of deionized water, and ultrasonically obtain a stable dispersion of 1 mg / mL graphene oxide dispersion for 4 hours;

[0025] (2) Add 2.584g 1-(2-aminoethyl)piperazine to the dispersion prepared in step (1), and stir at 30°C for 24 hours;

[0026] (3) Add 3.083g of N,N-methylenebisacrylamide to the reaction system in step (2), and continue stirring at a constant temperature of 30°C for 60 hours to obtain 1 mg / mL hyperbranched polymer / hyperbranched polymer modified A mixed solution of graphene oxide;

[0027] (4) The reaction solution prepared in step (3) is placed in a dialysis bag of 8-14kDa, and dialyzed for one week, the graphene oxide modified by hyperbranched polymer can be obtained;

[0028] To characterize the prepared figure 1 Infrared spectra of graphene oxide materials before and after modification, where 2920cm -1 ...

Embodiment 2

[0030] The specific method of hyperbranched polymer modified graphene oxide is as follows:

[0031] (1) Prepare a 1 mg / mL graphene oxide dispersion by ultrasonication for 4 hours, take 1 mL of the dispersion and add deionized water to dilute to 30 mL;

[0032] (2) Add 2.584g 1-(2-aminoethyl)piperazine to the dispersion prepared in step (1), and stir at 30°C for 24 hours;

[0033] (3) Add 3.083 g of N,N-methylenebisacrylamide to the reaction system in step (2), and continue stirring at a constant temperature of 30°C for 48 hours;

[0034] (4) Add deionized water to the solution in step (3), and dilute to 500mL to obtain a mixed solution of hyperbranched polymer / hyperbranched polymer modified graphene oxide with a graphene oxide concentration of 2mg / L.

[0035] Use this solution to prepare pervaporation membranes on the surface of inorganic ceramic materials, and pretreat the inorganic tubular membranes: immerse the inorganic membranes in 3-amino-triethoxysilane ethanol solutio...

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Abstract

The invention relates to hyperbranched polymer modified graphene oxide in water phase and a method for preparing the hyperbranched polymer modified graphene oxide, and belongs to the technical field of modification of graphene materials. The method includes ultrasonically dispersing graphene oxide, then adding diamine monomers into the dispersed graphene oxide, and stirring the diamine monomers and the graphene oxide at the constant temperatures to carry out sufficient reaction on the diamine monomers and the graphene oxide; adding diene monomers into reaction systems, and continuing to stir the diene monomers and the reaction systems to polymerize the diene monomers and the diamine monomers; removing hyperbranched polymers by means of dialysis to obtain the modified graphene oxide. Partsof the monomers can be polymerized on graphene oxide lamellas in an in-situ manner when the diene monomers and the diamine monomers are polymerized, so that the graphene oxide can be modified. The hyperbranched polymer modified graphene oxide and the method have the advantages that the technological method is simple and is easy to control, operation conditions for the method are mild, and other added components or multi-step reaction can be omitted; the hyperbranched polymer modified graphene oxide prepared by the aid of the method and composite materials with the hyperbranched polymer modified graphene oxide can be applied to the fields such as preparation of novel separation membranes, novel medicine loading materials and novel adsorption materials.

Description

technical field [0001] The invention relates to a modification technology of graphene materials, and provides a specific method for preparing hyperbranched polymer modified graphene oxide and its composite materials in an aqueous phase by in-situ polymerization. The modified graphene oxide prepared by the method Permanent graphene and its composite materials can be used in the preparation of new separation membranes, new drug-loaded materials, and new adsorption materials. Background technique [0002] Graphene is composed of a dense layer of sp wrapped in a honeycomb crystal lattice 2 A single-layer two-dimensional crystal composed of hybrid carbon atoms is the thinnest material known in the world, only one carbon atom thick. Its unique two-dimensional structure makes it have excellent mechanical, thermal, electrical and optical properties. Graphene oxide, as an important derivative of graphene, has a simple preparation method and can be obtained by ultrasonic oxidation o...

Claims

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Application Information

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IPC IPC(8): C08G83/00C08K7/00C08K3/04B01D71/72B01D67/00B01J20/26B01J20/30A61K47/34A61K47/04
CPCA61K47/02A61K47/34B01D67/0079B01D71/72B01J20/262C08G83/005C08K3/04C08K7/00
Inventor 纪树兰汪林王乃鑫安全福杨恒宇李倩
Owner BEIJING UNIV OF TECH
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