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Polymer grafted graphene oxide and preparation method thereof

A polymer and graphene technology, which is applied in the field of polymer grafted graphene oxide and its preparation, can solve the problems of low grafting reaction efficiency, low modification efficiency, narrow application range, etc., and achieves simple and convenient preparation process. Avoid chemical reaction and purification process, realize the effect of production transformation

Inactive Publication Date: 2012-10-17
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the need to modify the polymer or graphene oxide before grafting in the existing preparation method of grafted polymer modified graphene oxide, but due to the low modification efficiency, It is difficult to control, which leads to defects such as low grafting reaction efficiency, complicated operation and narrow application range, thereby providing a polymer grafted modified graphene oxide and a preparation method thereof

Method used

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  • Polymer grafted graphene oxide and preparation method thereof
  • Polymer grafted graphene oxide and preparation method thereof
  • Polymer grafted graphene oxide and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] (1) Mix graphene oxide with water (concentration of graphene oxide is 0.5mg / mL water), sonicate for 10 minutes; add acrylamide monomer, sonicate for 5 minutes to obtain a mixed solution; the concentration of acrylamide in the mixed solution is 5wt% ;

[0045] (2) Take 10mL of the mixed solution obtained in step (1), and bubble the mixed solution with nitrogen for 20 minutes to remove the oxygen in the mixed solution; after sealing, send it to a cobalt-60 irradiation chamber for irradiation, the irradiation dose is 50kGy, and the irradiation dose is 50kGy. The dose rate is 2.94kGy / hour; after the irradiation is completed, the resulting mixture is ultrasonically dispersed in 40mL water for 10min to obtain a dispersion;

[0046] (3) The dispersion liquid is filtered through a PVDF microporous membrane with a pore size of 0.22 μm, the filter cake is collected, and then dispersed in 40 mL of water;

[0047] (4) Repeat the operation of step (3) 5 times to obtain graphene oxi...

Embodiment 2

[0050] (1) Mix graphene oxide with water (the concentration of graphene oxide is 2 mg / mL water), and sonicate for 20 minutes; add acrylic acid monomer, and sonicate for 5 minutes to obtain a mixed solution; the concentration of acrylic acid in the mixed solution is 30 wt %;

[0051] (2) Take 10mL of the mixed solution obtained in step (1), and bubble the mixed solution with nitrogen for 20 minutes to remove the oxygen in the mixed solution; after sealing, send it to a cobalt-60 irradiation chamber for irradiation, and the irradiation dose is 5kGy. The dose rate is 0.29kGy / hour; after the irradiation is completed, the resulting mixture is dispersed in 40mL of water, and ultrasonically dispersed for 10min to obtain a dispersion;

[0052] (3) The dispersion liquid is filtered with a PVDF microporous membrane with a pore size of 0.22 μm, and the filter cake is collected and then dispersed in 40 mL of water;

[0053] (4) Repeat the operation of step (3) 5 times to obtain graphene o...

Embodiment 3

[0056] (1) Mix graphene oxide with ethyl acetate (the concentration of graphene oxide is 3 mg / mL ethyl acetate), and sonicate for 20 minutes; add vinyl acetate monomer, and sonicate for 5 minutes to obtain a mixed solution; vinyl acetate in the mixed solution The concentration is 50wt%;

[0057] (2) Take 10mL of the mixed solution obtained in step (1), and bubble the mixed solution with nitrogen for 20 minutes to remove the oxygen in the mixed solution; after sealing, send it to a cobalt-60 irradiation chamber for irradiation, the irradiation dose is 30kGy, and the irradiation dose is 30kGy. The dose rate was 1.76kGy / hour; after the irradiation was completed, the resulting mixture was dispersed in 40mL of ethyl acetate, and ultrasonically dispersed for 10min to obtain a dispersion;

[0058] (3) Filtrate the dispersion with a PVDF microporous membrane with a pore size of 0.22 μm, collect the filter cake, and then disperse it in 40 mL of ethyl acetate;

[0059] (4) Repeat the o...

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Abstract

The invention relates to polymer grafted graphene oxide and a preparation method thereof. The method comprises the step that the polymer grafted modified graphene oxide is obtained through an irradiation graft polymerization reaction of C=C contained monomers and graphene oxide under anoxic conditions. The method of the invention, which does not need the modification of graphene oxide or polymers before grafting, has the advantages of simple operation process and wide application range, and is especially suitable for large-scale batch production; and the polymer grafted graphene oxide prepared in the invention has an obviously improved grafting rate, so the polymer grafted graphene oxide can be widely used.

Description

technical field [0001] The invention relates to a polymer-grafted graphene oxide and a preparation method thereof. Background technique [0002] Since two researchers from the University of Manchester in the United Kingdom discovered graphene in 2004, graphene has attracted strong attention from the scientific and technological community. The basic and applied research on graphene has become one of the most popular topics in the current academic circle. With the progress of research, various new functions of graphene have been discovered one after another, and more and more attention has been paid to related application research, which widely involves fields such as catalysis, medicine, life science, energy, electronic devices and materials. It is based on the revolutionary influence of graphene on the future scientific field that the 2010 Nobel Prize in Physics was awarded to the discoverers of graphene, Andre Geim and Konstantin Novoserov (Konstantin Novoselov). [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F2/46
Inventor 李景烨黄庆张伯武张玉杰邓波李林繁彭程虞鸣胡文兵吕敏
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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