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Graphene oxide nano composite organic hydrogel and preparation method thereof

A nanocomposite and graphene technology, applied in the field of graphene oxide nanocomposite organic hydrogels, can solve problems such as the need to improve the strength of hydrogels, and achieve the effect of overcoming the inability to use ionic monomers and improving strength and mechanical properties.

Inactive Publication Date: 2012-09-19
HENAN UNIV OF SCI & TECH
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Problems solved by technology

However, the currently available nanoparticles are mainly lithium diatomaceous earth, but when lithium diatomaceous earth is used as a nanomaterial, the selected organic monomer must be a non-ionic monomer, and the strength of the prepared hydrogel needs to be improved.

Method used

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Embodiment Construction

[0017] The technical solution of the present invention will be specifically described below with reference to specific embodiments, but this does not limit the technical solution of the present invention.

[0018] The graphene oxide nanocomposite organic hydrogel is made of the following raw materials by weight percentage: graphene oxide 0.1-1.5%, organic monomer 5-17%, potassium persulfate 0.4-0.9%, tetramethylethylenediamine 0.1% ~0.3%, and the balance is deionized water; the organic monomer is one or any combination of acrylamide, acrylic acid, and N-isopropylacrylamide; wherein graphene oxide can be prepared by a conventional hummers method. The specific preparation method is as follows:

[0019] 1) take a certain amount of graphene oxide (accounting for 0.1-1.5% of the total mass of the hydrogel) and disperse it in deionized water, and ultrasonically disperse it uniformly for 2 hours to obtain a dispersion;

[0020] 2) The obtained uniformly dispersed graphene oxide-cont...

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Abstract

The invention discloses graphene oxide nano composite organic hydrogel and a preparation method thereof. The graphene oxide nano composite organic hydrogel is prepared from the following raw materials in percentage by weight: 0.1 to 1.5 percent of graphene oxide, 5 to 17 percent of organic monomer, 0.4 to 0.9 percent of initiating agent, 0.1 to 0.3 percent of catalyst and the balance of deionized water; and the organic monomer is one or any combination of acrylamide, acrylic acid, and N-isopropylacrylamide. According to the graphene oxide nano composite organic hydrogel, the added graphene oxide has the lamellar structure which is similar to that of lithium diatomite, and the surface of graphene oxide has abundant hydroxyl and carboxyl functional groups, so that the graphene oxide can be combined with acrylic acid, acylic acid amide and water; and therefore, the strength and mechanical properties of the hydrogel can be improved, and the defects that the ion type monomers cannot be used by a lithium diatomite system can be overcome.

Description

technical field [0001] The present invention relates to a graphene oxide nanocomposite organic hydrogel, and also relates to a preparation method of the hydrogel. Background technique [0002] Hydrogels are cross-linked networks composed of hydrophilic polymers that can swell in water and retain a large amount of water without being dissolved. They can swell to a certain volume in water, and under certain conditions, they can swell to a certain volume. They are a kind of functional polymer materials that integrates water absorption, water retention and controlled release. The strength of the hydrogel has a great influence on its application range. At present, in terms of improving the strength of hydrogels, there are mainly topological hydrogels, nanostructured hydrogels, and double network hydrogels. Among them, the nano-hydrogel has the advantages of simple preparation method and good repeatability. However, the currently usable nanoparticles are mainly hectorite, but w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F120/56C08F220/56C08F220/06C08F220/54C08K9/02C08K3/04
Inventor 姚大虎陈权高喜平张玉清高龙娜
Owner HENAN UNIV OF SCI & TECH
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