Method for preparing three-dimensional porous nano composite material of graphene oxide-water soluble polymer

A technology of water-soluble polymers and nanocomposites, which is applied in the field of nanomaterial manufacturing, can solve the problems of limited application range and high energy consumption in preparation, and achieve the effects of simple and easy control of the process, expanding the scope of application, and promoting practicality

Inactive Publication Date: 2014-06-25
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of preparation method of graphene oxide-water-soluble polymer three-dimensional porous nano-composite material, solve the grap

Method used

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  • Method for preparing three-dimensional porous nano composite material of graphene oxide-water soluble polymer
  • Method for preparing three-dimensional porous nano composite material of graphene oxide-water soluble polymer
  • Method for preparing three-dimensional porous nano composite material of graphene oxide-water soluble polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 100mg of graphene oxide and 100mg of polyvinyl alcohol (PVA) as raw materials, dissolve in 20ml of deionized water, heat to 90°C in a water bath, stir for 2 hours and mix well;

[0020] The obtained product was divided into silica gel molds, put into a freezer at -30°C for 24 hours, and then taken out, and the obtained solid was put into a freeze dryer at -50°C, 10Pa for 24 hours of sublimation drying to obtain a cylindrical solid graphene oxide - Three-dimensional porous nanocomposites of water-soluble polymers.

[0021] In order to verify the strength of the composite material, weights of different masses were placed on the 30mg composite material. It can be seen that the structure of the composite material can still remain stable under the weight of 50g, as shown in figure 1 shown.

[0022] The composite material was characterized by scanning electron microscopy, and the results were as follows: figure 2 It can be seen that the composite material is a porous ...

Embodiment 2

[0024] Take 100mg of graphene oxide and 20mg of polyethylene glycol (PEG) as raw materials, dissolve in 20ml of deionized water, heat to 70°C in a water bath, stir for 2 hours and mix well;

[0025] The obtained product was divided into silica gel molds, put into a freezer at -30°C for 18 hours, and then taken out, and the obtained solid was put into a freeze dryer at -50°C, 10pa for sublimation drying for 36 hours, and a cylindrical solid graphene oxide was obtained - Three-dimensional porous nanocomposites of water-soluble polymers.

Embodiment 3

[0027] Take 150mg of graphene oxide and 100mg of polyvinylpyrrolidone (PVP) as raw materials, dissolve in 20ml of deionized water, heat to 100°C in a water bath, stir for 1 hour and mix well;

[0028] The obtained product was divided into silica gel molds, put into a freezer at -30°C for 24 hours, and then taken out, and the obtained solid was placed in a freeze dryer at -50°C, 10Pa for 72 hours of sublimation drying to obtain a cylindrical solid graphene oxide - Three-dimensional porous nanocomposites of water-soluble polymers.

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Abstract

The invention discloses a method for preparing a three-dimensional porous nano composite material of a graphene oxide-water soluble polymer. The method comprises the following steps: 1, dissolving a graphene oxide and a water soluble polymer into water to evenly mix to obtain a product, wherein the mass ratio of the graphene oxide to the water soluble polymer is (10:1) to (1:3); the ratio of total mass of the graphene oxide and the water soluble polymer to the mass of water is (1:1,000) to (1:50) and the water soluble polymer is polyvinyl alcohol, polyethylene glycol or polyvinylpyrrolidone; and 2, carrying out freeze drying on the product in a mold, so as to obtain the three-dimensional porous nano composite material of solid graphene oxide-water soluble polymer. The composite material is simple in process, easy to control, green and environment-friendly. The three-dimensional porous nano composite material disclosed by the invention has a space continuous structure, and the characteristics of the graphene oxide material, such as abundant functional groups on surface and the electrical conductivity (after thermal/chemical reduction) can be fully played, so as to improve the performance of the composite material, and expand the application range of the composite material.

Description

technical field [0001] The invention relates to the field of nanomaterial manufacturing, in particular to a method for preparing a graphene oxide-water-soluble polymer three-dimensional porous nanocomposite material. Background technique [0002] Polymer materials have important industrial application value and have been widely used in different fields such as electronic energy storage, fuel cells, and environmental purification. Polymers are composed of molecules with high relative molecular weight, which are repeatedly connected and aggregated through covalent bonds. By adding nanomaterials, polymer-based nanocomposites can be prepared, and their physical and chemical properties change significantly, often showing more excellent strength, stiffness, viscoelasticity, hardness, wear resistance and heat resistance, etc., which has attracted people's attention. Research extensively. Graphene oxide is an intermediate product of monoatomic layer two-dimensional graphene, which...

Claims

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Application Information

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IPC IPC(8): C08L29/04C08L71/08C08L39/06C08K3/04
Inventor 陈坚高莹史相如刘文林
Owner SOUTHEAST UNIV
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