CN101485962B - Simple method for dispersing carbon nano-tube - Google Patents
Simple method for dispersing carbon nano-tube Download PDFInfo
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- CN101485962B CN101485962B CN2008101597298A CN200810159729A CN101485962B CN 101485962 B CN101485962 B CN 101485962B CN 2008101597298 A CN2008101597298 A CN 2008101597298A CN 200810159729 A CN200810159729 A CN 200810159729A CN 101485962 B CN101485962 B CN 101485962B
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Abstract
The invention relates to a simple method for dispersing carbon nano tubes, which comprises the following steps: firstly, dissolving a polysaccharide substance into a solvent, swelling a solution at room temperature, putting the swelling solution into a water bath kettle at a set temperature of between 15 and 90 DEG C, and stirring continuously to obtain an even and stable polysaccharide solution; and secondly, adding single-wall or multi-wall carbon nano tubes into the polysaccharide solution, stirring the solution continuously, performing ultrasound on ultrasonic, and obtaining a carbon nano tube solution with even and stable dispersion, wherein the mass volume ratio of each polysaccharide solution is between 0.01 and 90 percent, and the carbon nano tubes is 0.01 to 75 percent of the total mass of polysaccharide and the carbon nano tubes. The method has the advantages of low cost, no pollution, simple and convenient operation, and good repetitiveness in the dispersion process; in addition, the method does not damage the original structure of the carbon nano tube in the whole process, keeps the original length of the carbon nano tube, and has good dispersivity.
Description
Technical field:
The present invention relates to a kind of simple and easy method that CNT is disperseed, belong to the blending technology field of organic material and inorganic material.
Background technology:
CNT is hollow tubular fiber structure, and its diameter is generally a few nanometer to tens nanometers, and length can reach several microns even several millimeters.It has very strong skin effect, quantum size effect, local fields effect and special a lot of unusual physics and chemical characteristics such as boundary zone.It has the conduction intensity of metalloid, and its theoretical conduction intensity is 100 times of steel, but weight only is 1/7th of steel.In addition, it is moderate that CNT has specific area, and charging and discharging capabilities waits physics and electrology characteristic by force.The superpower mechanical property of CNT can greatly improve the intensity and the toughness of composite; The electrical conductivity that unique electricity and optical property can be improved polymeric material prepares novel opto-electrical polymers composite; Its particular structure can prepare the one-dimensional nano-composite material of metal or metal oxide filling/coating.The structure that CNT is peculiar, electricity, machinery, chemical property make its great potential in the material field be subjected to extensive concern.But there is strong Van der Waals force between the CNT and has great draw ratio, therefore be easy to form big aggregate, how to improve the dispersive property of CNT, eliminate big reunion, become the precondition of preparation carbon nano tube compound material.
The method of the CNT of bibliographical information dispersion at present mainly is with strong oxidizing property mass treatment CNT.The CNT of the surface carboxyl modification that the method obtains, CNT can be cut off and its surface electronic structure has to a certain degree damage, thereby have destroyed the original structure and the performance of CNT, have been subjected to bigger restriction in the application of various fields.In the carbon nanotube polymer intermingling material, the longer the better to require the length of CNT.Wide, renewable, the biodegradable and bio-compatible of polysaccharide origin, some polysaccharide and derivative thereof can interact or form molecule aggregate and show physicochemical property and the structure that makes new advances, the research of polysaccharide macromolecular mixed solution is paid close attention to by people always.
Summary of the invention:
The object of the present invention is to provide a kind of simple and easy method of new dispersing Nano carbon tubes, the used raw material of this method are pollution-free, be easy to get, and the preparation process good reproducibility, the CNT that makes keeps original structure, good dispersion.
The method that CNT of the present invention disperses is dissolved in polysaccharose substance in the solvent earlier, and swelling 30min-100h at room temperature is placed on the solution of swelling and establishes warm 15-90 ℃ in the water-bath, continues to stir 30min-100h, obtains uniform and stable polysaccharide solution; Then single wall or multi-walled carbon nano-tubes are added continuation stirring 30min-100h in the polysaccharide solution, ultrasonic 5min-2h obtains the stable carbon nano-tube solution that is uniformly dispersed in ultrasonic wave.The CNT dispersion effect is good, and wherein the mass volume ratio of each polysaccharide solution is 0.01-90% (w/v), and CNT accounts for the 0.01-75% of polysaccharide and CNT gross mass.In whole process, the original structure of destroying carbon nanometer tube not keeps the length of original CNT.
Used dispersed substance---polysaccharide among the present invention comprises in carragheen, glucose, hydroxyethylcellulose, the sodium alginate one or more.
Solvent for use of the present invention is one or more of distilled water, ethanol, acetone equal solvent.
Compare with the chemic modified method that both at home and abroad CNT is disperseed mainly to adopt at present, the present invention adopts the method for physical blending, has following outstanding advantage: (1) raw material is a natural products, is easy to get, and cost is low.(2) pollution-free, environmental protection, simple, dispersion process repeatability is strong; (3) original structure of destroying carbon nanometer tube not, with other physics process for dispersing relatively, have the high advantage of content of carbon nanotubes in the dispersion soln.
Description of drawings:
Fig. 1 is a carragheen dispersed carbon nano tube transmission electron microscope picture.
Fig. 2 is the transmission electron microscope picture of reunion CNT.
The specific embodiment:
The present invention is further illustrated below in conjunction with embodiment.
Embodiment 1:
In the 100ml conical flask, add 50ml distilled water, add 0.5g carragheen room temperature lower magnetic force and stir 30 minutes abundant swellings.Water-bath is heated to 90 ℃ then, stir the carrageenan solutions that obtains stable homogeneous after 60 minutes, in carrageenan solutions, add the 1.5g multi-walled carbon nano-tubes, continue to stir 30 minutes, in ultrasonic wave ultrasonic 15 minutes at last, obtain uniform and stable CNT carrageenan solutions.
With Fig. 1 and Fig. 2 contrast, the inventive method dispersed carbon nanotubes keeps original structure, good dispersion.
Embodiment 2:
In the 100ml conical flask, add 60ml distilled water, add the 0.6g carragheen, at room temperature magnetic agitation is 60 minutes.Water-bath is heated to 90 ℃ then, stir the carrageenan solutions that obtains stable homogeneous after 60 minutes, in carrageenan solutions, add the 0.0006g multi-walled carbon nano-tubes, continue to stir 100h, in ultrasonic wave ultrasonic 15 minutes at last, obtain uniform and stable CNT carrageenan solutions.
Embodiment 3:
In the 100ml conical flask, add 60ml acetone, add 0.006g glucose, at room temperature magnetic agitation is 30 minutes, and water-bath is established temperature to 15 ℃ then, stirs the glucose solution that obtains stable homogeneous after 60 minutes, in glucose solution, add the 0.06g multi-walled carbon nano-tubes, continue to stir 30 minutes, ultrasonic 2h in ultrasonic wave obtains uniform and stable CNT glucose solution at last.
Embodiment 4:
In the 100ml conical flask, add 10ml ethanol, the distilled water that adds 50ml again mixes, add 54g glucose magnetic agitation 100h at room temperature, obtain the glucose solution of stable homogeneous, in glucose solution, add the 6g SWCN, continue to stir 2h, in ultrasonic wave ultrasonic 5 minutes at last, obtain uniform and stable CNT glucose solution.
Embodiment 5:
In the 100ml conical flask, add 50ml distilled water, add 2g sodium alginate and 2g glucose room temperature lower magnetic force and stir 60 minutes abundant swellings.Water-bath is heated to 60 ℃ then, stir the sodium alginate glucose mixed solution that obtains stable homogeneous after 30 minutes, in solution, add the 0.5g multi-walled carbon nano-tubes, continue to stir 30 minutes, in ultrasonic wave ultrasonic 15 minutes at last, obtain uniform and stable CNT sodium alginate glucose solution.
Embodiment 6:
In the 100ml conical flask, add 50ml distilled water, add 0.15g hydroxyethylcellulose room temperature lower magnetic force and stir abundant swelling.Water-bath is heated to 45 ℃ then, stir the hydroxy ethyl fiber cellulose solution that obtains stable homogeneous after 30 minutes, in solution, add the 0.05g multi-walled carbon nano-tubes, continue to stir 30 minutes, in ultrasonic wave ultrasonic 15 minutes at last, obtain uniform and stable CNT hydroxy ethyl fiber cellulose solution.
Claims (4)
1. the simple and easy method of a dispersing Nano carbon tubes is characterized in that earlier polysaccharose substance being dissolved in the solvent, and swelling at room temperature is placed on the solution of swelling and establishes warm 15-90 ℃ in the water-bath, continues to stir, and obtains uniform and stable polysaccharide solution; Then single wall or multi-walled carbon nano-tubes are added continuation stirring in the polysaccharide solution, ultrasonic in ultrasonic wave, obtain the stable carbon nano-tube solution that is uniformly dispersed, wherein the mass volume ratio of each polysaccharide solution is 0.01-90%, and CNT accounts for the 0.01-75% of polysaccharide and CNT gross mass; Wherein, polysaccharose substance is one or more in carragheen, glucose, hydroxyethylcellulose, the sodium alginate.
2. the simple and easy method of a kind of dispersing Nano carbon tubes according to claim 1 is characterized in that solvent for use is one or more in distilled water, ethanol, the acetone.
3. the simple and easy method of a kind of dispersing Nano carbon tubes according to claim 1 is characterized in that polysaccharose substance swelling 30min-100h in solvent, the solution of swelling is placed on continues in the water-bath to stir 30min-100h, obtains uniform and stable polysaccharide solution.
4. the simple and easy method of a kind of dispersing Nano carbon tubes according to claim 1, it is characterized in that single wall or multi-walled carbon nano-tubes are added continuation stirring 30min-100h in the polysaccharide solution, ultrasonic 5min-2h in ultrasonic wave obtains the stable carbon nano-tube solution that is uniformly dispersed.
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| CN2008101597298A CN101485962B (en) | 2008-11-06 | 2008-11-06 | Simple method for dispersing carbon nano-tube |
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| CN101485962B true CN101485962B (en) | 2011-05-04 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768798B (en) * | 2010-01-22 | 2011-06-29 | 青岛大学 | Preparation method of sodium alga acid/ carbon nano tube composite fibre |
| CN103000868B (en) * | 2012-12-28 | 2015-01-21 | 湖南丰日电源电气股份有限公司 | Preparation method of carbon pulp |
| CN104724691B (en) | 2013-12-23 | 2016-11-09 | 北京阿格蕾雅科技发展有限公司 | A kind of method improving SWCN dispersiveness |
| CN104151751B (en) * | 2014-06-09 | 2016-08-17 | 中国石油大学(华东) | A kind of CNT/amorphous carbon nucleocapsid structure-Polymeric dielectric composite |
| CN107799200B (en) * | 2017-10-11 | 2020-06-16 | 哈尔滨工程大学 | Preparation process method of sodium alginate/multi-walled carbon nanotube electrode film |
| CN112591736B (en) * | 2020-12-16 | 2022-12-20 | 四川大学 | Method for dispersing carbon nano tube with assistance of cellulose |
| CN113337925B (en) * | 2021-06-09 | 2022-06-17 | 哈尔滨工程大学 | Preparation method of carbon nanotube/graphene composite fiber |
Citations (5)
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|---|---|---|---|---|
| EP0949199B1 (en) * | 1998-04-09 | 2003-05-21 | Horcom Limited | Composition including nanotubes and an organic compound |
| CN1188458C (en) * | 2003-07-04 | 2005-02-09 | 清华大学 | Method for preparing polymer and active carbon nanometer tube powder composition |
| CN1304657C (en) * | 2001-12-12 | 2007-03-14 | 爱什兰股份有限公司 | Preparation of stable carbon nanotube dispersions in liquids |
| CN101081697A (en) * | 2006-06-02 | 2007-12-05 | 株式会社堀场制作所 | Method for producing carbon nanotube-containing material |
| US7378074B2 (en) * | 2004-07-06 | 2008-05-27 | Teco Nanotech Co., Ltd | Method of forming a uniform carbon nanotube electron-emission layer in a field emission display |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0949199B1 (en) * | 1998-04-09 | 2003-05-21 | Horcom Limited | Composition including nanotubes and an organic compound |
| CN1304657C (en) * | 2001-12-12 | 2007-03-14 | 爱什兰股份有限公司 | Preparation of stable carbon nanotube dispersions in liquids |
| CN1188458C (en) * | 2003-07-04 | 2005-02-09 | 清华大学 | Method for preparing polymer and active carbon nanometer tube powder composition |
| US7378074B2 (en) * | 2004-07-06 | 2008-05-27 | Teco Nanotech Co., Ltd | Method of forming a uniform carbon nanotube electron-emission layer in a field emission display |
| CN101081697A (en) * | 2006-06-02 | 2007-12-05 | 株式会社堀场制作所 | Method for producing carbon nanotube-containing material |
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