A kind of preparation method of environment-responsive graphene hybrid material

A technology of graphite and graphene, applied in the field of environment-responsive graphene hybrid materials and their preparation, can solve the problems of limited application, difficulty in dissolving or dispersing, and achieves simple steps, stable structure, good solubility and dispersibility Effect

Inactive Publication Date: 2016-08-03
ANKANG UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because graphene is difficult to dissolve or disperse in general solvents, its industrial application is limited.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of environment-responsive graphene hybrid material
  • A kind of preparation method of environment-responsive graphene hybrid material
  • A kind of preparation method of environment-responsive graphene hybrid material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] Specifically, the preparation method of the graphene hybrid material of the present invention includes the following steps:

[0029] (1) Under the protection of nitrogen, the graphene and RAFT chain transfer agent 2-(dodecyl trithiocarbonate)-2-methylpropionate-3-azidopropyl ester are in o-dichlorobenzene Ultrasonic dispersion for 30~60 minutes, heating to 120~160 o C, react for 40-60 hours, cool to room temperature, filter and wash with ethanol 4-6 times, and dry to obtain the graphene with the surface anchored RAFT chain transfer agent;

[0030] (2) Disperse the graphene with the above-mentioned surface anchoring RAFT chain transfer agent in an organic solvent ultrasonically for 30-60 minutes, add monomer and initiator azobisisobutyronitrile, and under nitrogen protection for 50-80 o C react for 2 to 48 hours, filter, wash with chloroform and methanol for 5 to 8 times, and dry to obtain an environmentally responsive polymer grafted graphene hybrid material;

[0031] The orga...

Embodiment 1

[0034] Dissolve 200 mg of graphene oxide and 10 mg of 2-(dodecyl trithiocarbonate)-2-methylpropionic acid-3-azidopropyl ester in 25 mL of o-dichlorobenzene, disperse ultrasonically for 30 minutes, and protect with nitrogen. Down, 120 o C reacts for 50 hours. Cool to room temperature, filter and wash with ethanol 4 times, and dry to obtain graphene oxide with the surface anchored RAFT chain transfer agent.

[0035] The above 100 mg of graphene oxide functionalized with RAFT chain transfer agent was ultrasonically dispersed in 100 mL 1,4-dioxane for 30 minutes, and 5 g N-isopropylacrylamide and 11.6 mg azobisisobutyronitrile were added under nitrogen protection 70 o C reacts for 12 hours. Filter, wash with chloroform and methanol 3 times each, and dry to obtain a temperature-sensitive poly N-isopropylacrylamide grafted graphene oxide hybrid material.

[0036] figure 1 For the transmission electron micrograph of the hybrid material, by changing the reaction time of step (2), it can ...

Embodiment 2

[0038] Dissolve 300 mg of graphene oxide and 10 mg of 2-(dodecyl trithiocarbonate)-2-methylpropionic acid-3-azidopropyl ester in 25 mL of o-dichlorobenzene, and ultrasonically disperse for 30 minutes, under nitrogen protection Down, 120 o C reacts for 50 hours. Cool to room temperature, filter and wash with ethanol 4 times, and dry to obtain graphene oxide with the surface anchored RAFT chain transfer agent.

[0039] The graphene oxide functionalized with the above 100mg RAFT chain transfer agent was ultrasonically dispersed in 100mL 1,4-dioxane for 30 minutes, 4g diethylaminoethyl methacrylate and 6.9mg azobisisobutyronitrile were added, protected by nitrogen Under 70 o C reacts for 12 hours. Filter, wash with chloroform and methanol 3 times each, and dry to obtain a pH-sensitive poly(diethylaminoethyl methacrylate) grafted graphene oxide hybrid material.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of an environmental response type graphene hybrid material. The preparation method comprises the following steps of: (1) anchoring an RAFT (Reversible Addition Fragmentation Chain Transfer) agent on the surface of graphene; and (2) triggering a functional monomer to polymerize by utilizing the RAFT agent on the surface of the graphene to obtain an environmental response type polymer grafted graphene hybrid material. The preparation method disclosed by the invention is simple, mild in polymerization condition and suitable for large-scale production; and the prepared functional graphene has controllability for the thickness of a polymer on the surface, favorable response to the simulation for the external environment and long-term dispersibility in a solvent.

Description

Technical field [0001] The invention relates to an environment-responsive graphene hybrid material and a preparation method thereof, and belongs to the technical field of organic-inorganic hybrid material preparation. Background technique [0002] Graphene has unique electrical conductivity, thermal conductivity, mechanical properties, optical properties and electrical properties, and has become a research hotspot in many disciplines such as physics, chemistry, and materials science. Because graphene is difficult to dissolve or disperse in general solvents, its industrial application is limited. [0003] Environmentally responsive polymers, namely smart polymers, are a new type of functional polymer materials that have been developed recently. They can respond quickly to changes in the external environment such as temperature, pH and ionic strength. Mutations occur in structure, physical properties and chemical properties, so it is widely used in drug controlled release materials,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08F292/00
Inventor 金燕子罗文谦陈久存胡敏
Owner ANKANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap