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Preparation method and purposes of photosensitivity polymer base carbon nanotube disperse auxiliary

A technology of photosensitive polymers and carbon nanotubes, applied in chemical instruments and methods, transportation and packaging, chemical/physical processes, etc., can solve the problems of strict preparation conditions and cumbersome processes, achieve good solubility and dispersion performance, and easy preparation and operation , excellent performance

Inactive Publication Date: 2012-08-08
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of anionic polymerization method, the preparation conditions are strict and the process is relatively cumbersome

Method used

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  • Preparation method and purposes of photosensitivity polymer base carbon nanotube disperse auxiliary
  • Preparation method and purposes of photosensitivity polymer base carbon nanotube disperse auxiliary
  • Preparation method and purposes of photosensitivity polymer base carbon nanotube disperse auxiliary

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Get branched polystyrene maleic anhydride (BPSMA) 0.81g (maleic anhydride group 4mmol), 7-amino-4 methylcoumarin (AMC) 0.175g (1mmol) into a 100mL three-necked flask , add 18.72g of dimethyl sulfoxide, stir at about 25°C to dissolve the solid, pass nitrogen gas for 30min, seal the container and heat up to 30°C, and react at constant temperature for 72h under stirring conditions. The mixed solvent is a precipitating agent, and the reacted solution is slowly dropped into the precipitating agent, and a light yellow solid is obtained by suction filtration. The resulting solid was dissolved, precipitated, filtered, and vacuum-dried at 25°C to obtain the photosensitive polymer BPSMA-AMC.

[0035]The FTIR figure of the photosensitive polymer-based carbon nanotube dispersion aid BPSMA-AMC prepared in this embodiment is shown in figure 1 .

Embodiment 2

[0037] Take polystyrene maleic anhydride (APSMA) 0.81g (maleic anhydride group 4mmol) and 7-amino-4 methylcoumarin (AMC) 0.35g (2mmol) of alternating structure into a 100mL three-necked flask, Add 16.24g of dimethyl sulfoxide, stir at room temperature to dissolve the solid, and pass nitrogen gas for 45min. After sealing the container, heat up to 35°C. Precipitating agent, slowly drop the reacted solution into the precipitating agent, and filter with suction to obtain a light yellow solid. The resulting solid was dissolved, precipitated, filtered, and vacuum-dried at 25°C to obtain the photosensitive polymer APSMA-AMC.

Embodiment 3

[0039] Take polystyrene maleic anhydride (PSMA) 0.81g (maleic anhydride group 4mmol) and 7-amino-4 methylcoumarin (AMC) 0.525g (4mmol)g of random structure into a 100mL three-necked flask Add 12g of dimethyl sulfoxide, stir at room temperature to dissolve the solid, and pass nitrogen gas for 60min. After sealing the container, heat up to 40°C. As a precipitating agent, the reacted solution was slowly dropped into the precipitating agent, and a light yellow solid was obtained by suction filtration. The resulting solid was dissolved, precipitated, filtered, and vacuum-dried at 25°C to obtain the photosensitive polymer PSMA-AMC.

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Abstract

A preparation method and purposes of photosensitivity polymer base carbon nanotube disperse auxiliary are provided. The preparation steps comprise (1) dissolving polystyrene maleic anhydride and 7- amino-4- methylcoumarin into dimethylsulfoxide; (2) feeding nitrogen to a container of step (1) for 30-60 minutes, sealing the container and keeping stirring, heating the container to 30 DEG C to 40 DEG C, reacting in heat insulation mode for 48-72 hours; (3) dropping solution in step (2) into mixed solvent with the volume ratio of petroleum ether and water as 1:4 under the condition of stirring, and performing suction filtration to obtain a solid; and (4) further processing the solid through dissolution, deposition and suction filtration, performing vacuum drying on an obtained pale yellow solid, and obtaining a photosensitivity polymer. The application steps comprise (1) dissolving the polymer into water-base solvent, adding carboxyl or hydroxyl to functionalize a carbon nanotube, vibrating the polymer in an ultrasonator for 5-30 minuts; and (2) illuminating the solution of step (1) under ultraviolet light for 0-60 minutes to obtain polymer base carbon nanotube dispersion liquid. The preparation method of the photosensitivity polymer base carbon nanotube disperse auxiliary is mild in preparation condition and convenient and simple to operate. An obtained polymer can remarkably improve the dispersion stability of a carbon nanotube in the water-base solvent.

Description

technical field [0001] The invention relates to the technical field of functional polymer materials and nanometer materials, in particular to a preparation method and application of a photosensitive polymer-based carbon nanotube dispersion aid. Background technique [0002] Due to the high surface adsorption area, a large number of chemical reaction sites, and the special metal-semiconductor properties of electron storage and transfer, carbon nanotubes have been widely used in the field of electrochemistry. Since the discovery of carbon nanotubes, the problem of poor dispersion has been restricting the application and development of carbon nanotubes. In order to obtain a stable carbon nanotube dispersion system, many methods have been proposed, such as modifying carbon nanotubes with polymer molecules through covalent bonds or non-covalent bonds. The modification method through covalent bonding may affect its electrochemical structure due to the introduction of covalent bon...

Claims

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Application Information

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IPC IPC(8): C08F222/08C08F212/08C08F8/32B01F17/52B01F17/32B01F17/22C09K23/22C09K23/32C09K23/52
Inventor 刘晓亚熊小梅江金强刘敬成刘仁费小马
Owner JIANGNAN UNIV
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