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Diacetyl cellulose-carbon nano-tube derivatives, preparation method and use thereof

A technology of cellulose diacetate and carbon nanotubes, which is applied in the field of nanomaterials and natural polymers, can solve the problems of natural polymer derivatives - cellulose acetate covalently modified carbon nanotubes research reports, etc., and it is easy to achieve the preparation conditions Satisfaction, rich source of raw materials, and stable chemical structure

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 cellulose acetate, a natural polymer derivative.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A cellulose diacetate-carbon nanotube derivative with a mass content ratio of cellulose diacetate and carbon nanotubes of about 3.2:1. Reagent reaction, the carboxylic acid group on the surface of the carbon nanotube is converted into a highly reactive acid halide group, and then reacted with a binary functional organic compound to extend the active functional group from the surface of the carbon nanotube, and then react with the trichloro s-triazine reaction to obtain active carbon nanotubes containing chlorotriazine rings that can react with hydroxyl groups on the surface, and finally prepare them through nucleophilic substitution reaction with cellulose diacetate. The specific preparation method is as follows:

[0041] The carbon nanotubes were first pretreated according to the following steps: 15 stainless steel balls with a diameter of 6-8mm and 25g of unpurified carbon nanotubes were placed in two identical 200ml nylon tanks, and then 10ml of non-purified carbon n...

Embodiment 2

[0047] A cellulose diacetate-carbon nanotube derivative with a mass content ratio of cellulose diacetate and carbon nanotubes of about 1.9:1, its specific preparation method is as follows:

[0048] The carbon nanotubes are firstly pretreated, and the pretreatment method is the same as that of the above-mentioned embodiment 1.

[0049] Then take 15 g of pretreated carbon nanotubes and add them to 800 ml of acetone dissolved with 70 g of phosphorus tribromide, stir at 30 ° C for 8 h, and after ultrasonic reaction at 65 ° C for 60 h, centrifuge at a speed of 5000 rpm for 30 min, wash with acetone After cleaning, vacuum-dry at 35° C. for 36 hours to obtain carbon nanotubes with acid halide functional groups on the surface.

[0050] Take 8g of the above-mentioned carbon nanotubes with acid halide functional groups on the surface, add them to 400ml of N-methylpyrrolidone containing 35g of 1,3-propylenediamine and 15ml of triethylamine, stir at 45°C for 6h, After ultrasonic reaction...

Embodiment 3

[0054] A cellulose diacetate-carbon nanotube derivative with a mass content ratio of cellulose diacetate and carbon nanotubes of about 0.6:1, the specific preparation method of which is as follows:

[0055] The carbon nanotubes are firstly pretreated, and the pretreatment method is the same as that of the above-mentioned embodiment 1.

[0056] Then take 1g of the pretreated carbon nanotubes and add it to 50ml of benzene and 50ml of dimethyl dissolved in 1g of thionyl chloride, stir at 30°C for 1h, and after ultrasonic reaction at 30°C for 48h, centrifuge at 3000rpm for 10min , washed with carbon tetrachloride, and vacuum-dried at 30° C. for 24 hours to obtain carbon nanotubes with acid halide functional groups on the surface.

[0057] Take 0.1 g of the above-mentioned carbon nanotubes with acid halide functional groups on the surface, add them to 50 ml of tetrahydrofuran and 50 ml of dimethyl sulfoxide containing 5 g of diethylene glycol and 1 ml of 3-picoline, stir at 30 ° C fo...

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Abstract

he present invention provides a cellulose diacetate-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 cellulose diacetate via nucleophilic substitution. The mass content ratio of cellulose diacetate and carbon nanotube is 0.6-8:1. The invention also relates to a preparing method and purpose of the derivative. The derivative has a friendly environment, and a better solubility. The preparing condition of the derivative is easy to meet, and has an ample source of feed, lower cost, has high price in the filtering material for tobacco.

Description

technical field [0001] The invention relates to a derivative, in particular to a cellulose diacetate-carbon nanotube derivative, a preparation method and an application of the derivative, and belongs to the field of natural polymers and also belongs to the field of nanomaterials. 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 poo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 柯刚浣石黄风雷刘晓国刘自力
Owner GUANGZHOU UNIVERSITY
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