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Ethoxyl cellulose-carbon nano-tube derivatives and preparation method thereof

A technology of hydroxyethyl cellulose and carbon nanotubes, which is applied in the field of natural polymers and nanomaterials to achieve the effects of stable chemical structure, easy preparation conditions and good solubility

Inactive Publication Date: 2008-08-13
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many studies on the covalent modification of carbon nanotubes with polymers at home and abroad mainly focus on the synthesis of polymers, and there is no research report on the covalent modification of carbon nanotubes with hydroxyethyl cellulose, a natural polymer derivative.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A hydroxyethyl cellulose-carbon nanotube derivative with a mass content ratio of hydroxyethyl cellulose and carbon nanotubes of about 1.6:1, which is based on ball milling, purification and acidification of the original carbon nanotubes, React with a halogenating reagent to convert the carboxylic acid group on the surface of the carbon nanotube into a highly reactive acyl halide group, then react with a binary functional organic compound to extend the active functional group from the surface of the carbon nanotube, and then combine with Trichloro-s-triazine is reacted to obtain active carbon nanotubes containing chlorotriazine rings that can react with hydroxyl groups on the surface, and finally it is prepared by nucleophilic substitution reaction with hydroxyethyl cellulose. The specific preparation method is as follows:

[0037] The carbon nanotubes were first pretreated according to the following steps: 15 stainless steel balls with a diameter of 6-8mm and 25g of unp...

Embodiment 2

[0043] A hydroxyethyl cellulose-carbon nanotube derivative with a mass content ratio of hydroxyethyl cellulose and carbon nanotubes of about 0.4:1, the specific preparation method of which is as follows:

[0044] The carbon nanotubes are firstly pretreated, and the pretreatment method is the same as that of the above-mentioned embodiment 1.

[0045] Then take 15 g of the pretreated carbon nanotubes and add them to 900 ml of acetone dissolved with 90 g of phosphorus tribromide, stir at 40 °C for 7 h, and after ultrasonic reaction at 65 °C for 65 h, centrifuge at 4000 rpm for 45 min, wash with ether After cleaning, vacuum-dry at 40° C. for 24 hours to obtain carbon nanotubes with acid halide functional groups on the surface.

[0046] Take 9 g of the above-mentioned carbon nanotubes with acid halide functional groups on the surface, add them to 650 ml of N-methylpyrrolidone containing 65 g of 1,3-propylenediamine and 19 ml of triethylamine, stir at 30°C for 5 hours, After ultras...

Embodiment 3

[0050] A hydroxyethyl cellulose-carbon nanotube derivative with a mass content ratio of hydroxyethyl cellulose and carbon nanotubes of about 0.2:1, the specific preparation method of which is as follows:

[0051] The carbon nanotubes are firstly pretreated, and the pretreatment method is the same as that of the above-mentioned embodiment 1.

[0052] Then take 1 g of pretreated carbon nanotubes and add them to 100 ml of xylene dissolved with 1 g of thionyl chloride, stir at 30° C. for 1 h, and after ultrasonic reaction at 30° C. for 48 h, centrifuge at 3000 rpm for 10 min. After being washed with carbon chloride, it was vacuum-dried at 30° C. for 48 hours to obtain carbon nanotubes with acid halide functional groups on the surface.

[0053]Take 0.1 g of the above-mentioned carbon nanotubes with acid halide functional groups on the surface, add them to 100 ml of tetrahydrofuran containing 5 g of diethylene glycol and 1 ml of lutidine, stir at 60 ° C for 1 h, and use ultrasonicat...

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Abstract

The present invention provides a droxyethylcellulose-carbon nanotube derivative, prepared by original carbon nanotube reacting with an halogenating agent after being ball grinded, purified on the base of acidizing, carboxylic acid group of the carbon nanotube surface reacting with a binary functional group organic compound to make the lively functional group extend from the surface of the carbon nanotube after being converted to acyl halide group having strong reactive activity, then reacting with trichloro triazine, obtaining a lively carbon nanotube containing trichloro triazine on the surface which can react with hydroxide radical, finally reacting with the droxyethylcellulose via nucleophilic substitution. The mass content ratio of droxyethylcellulose and carbon nanotube is 0.2-1.6:1. The invention also relates to a preparing method of the derivative. The derivative has a friendly environment, has better solubility in organic solvent such as N-pyrrolidoneextraction, dimethylsulfoxide, N, N'-dimethylformamide and N, N'-dimethyl acetamide. The preparing condition of the derivative is easy to meet, and has an ample source of feed, lower cost.

Description

technical field [0001] The invention relates to a derivative, in particular to a hydroxyethyl cellulose-carbon nanotube derivative and a preparation method of the derivative, which belongs to the field of natural macromolecules and also belongs to the field of nanometer materials. Background technique [0002] In 1991, Japanese scientist Iijima S. discovered carbon nanotubes (Iijima S. Discovery of carbon nano-tubes. Kagaku to Kogyo, 1993, 67(12): 500-506). After more than ten years of development, carbon nanotubes have become an important research frontier of nanotechnology, and its major research results have emerged one after another, occupying a pivotal position in the development of science and technology in the 21st century. The peculiar quasi-one-dimensional hollow tube structure of carbon nanotubes makes it have excellent performance in many aspects such as adsorption, electricity, magnetism, field emission, mechanics, and electrochemistry. However, the extremely po...

Claims

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Application Information

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IPC IPC(8): C01B31/02
Inventor 黄风雷浣石柯刚谭湘倩仝毅
Owner GUANGZHOU UNIVERSITY
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