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Method for using isolated soybean protein to functionally modify single-walled carbon nanotube

A technology of single-walled carbon nanotubes and soybean protein isolate, which is applied in the direction of single-walled carbon nanotubes, carbon nanotubes, chemical instruments and methods, etc., can solve the problems affecting the loading capacity, achieve improved dispersibility, improve dispersibility, The effect of simple preparation method

Inactive Publication Date: 2018-07-17
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, the technical problem to be solved in the present invention is to overcome defects such as the modification of carbon nanotubes in the prior art that affects its load capacity, thereby providing a method for functionally modifying single-walled carbon nanotubes with soybean protein isolate. Hydrophilic and lipophilic properties, soy protein isolate is adsorbed on the surface of hydrophobic single-walled carbon nanotubes for modification by physical action

Method used

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  • Method for using isolated soybean protein to functionally modify single-walled carbon nanotube
  • Method for using isolated soybean protein to functionally modify single-walled carbon nanotube
  • Method for using isolated soybean protein to functionally modify single-walled carbon nanotube

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Embodiment 1

[0029] Mix 98%wt concentrated sulfuric acid solution with 69.8%wt concentrated nitric acid solution at a volume ratio of 3:1, and transfer 100mL to a three-necked flask. 50 mg of single-walled carbon nanotubes were added into the above-mentioned three-neck flask, condensed and refluxed at 80° C., stirred for 6 hours, and cooled to room temperature. The acidified single-walled carbon nanotubes were suction-filtered and washed with ultrapure water until neutral. Add 1 mg of the above-mentioned acidified single-walled carbon nanotubes to 20 ml of ultrapure water, and sonicate the probe for 40 min in an ice-water bath. Add 40 mg of soybean protein isolate, and ultrasonicate the probe for 40 minutes in an ice-water bath with a power of 300 W for 3 seconds and an interval of 2 seconds. The mixed solution was centrifuged at 10000r / min for 30min, the supernatant was taken, and the supernatant was placed in a freeze dryer to lyophilize.

[0030] The content of single-walled carbon na...

Embodiment 2

[0039]Mix 98%wt concentrated sulfuric acid solution with 69.8%wt concentrated nitric acid solution at a volume ratio of 3:1, and transfer 250mL to a three-necked flask. 100 mg of single-walled carbon nanotubes were added into the above-mentioned three-necked flask, condensed and refluxed at 80° C. and stirred for 6 hours, and cooled to room temperature. The acidified single-walled carbon nanotubes were suction-filtered and washed with ultrapure water until neutral. Add 1 mg of the above-mentioned acidified single-walled carbon nanotubes to 20 ml of ultrapure water, and sonicate the probe for 40 min in an ice-water bath. Add 30 mg of soybean protein isolate, and ultrasonicate the probe for 40 minutes in an ice-water bath, with a power of 400 W, ultrasonic for 3 seconds, with an interval of 2 seconds. The mixed solution was centrifuged at 10000r / min for 30min, the supernatant was taken, and the supernatant was placed in a freeze dryer to lyophilize.

[0040] High performance l...

Embodiment 3

[0043] Mix 98%wt concentrated sulfuric acid solution with 69.8%wt concentrated nitric acid solution at a volume ratio of 3:1, and transfer 150mL to a three-necked flask. 70 mg of single-walled carbon nanotubes were added into the three-necked flask, condensed and refluxed at 80° C., stirred for 6 hours, and cooled to room temperature. The acidified single-walled carbon nanotubes were suction-filtered and washed with ultrapure water until neutral. Add 1 mg of the above-mentioned acidified single-walled carbon nanotubes to 40 ml of ultrapure water, and sonicate the probe for 40 min in an ice-water bath. Add 50 mg of soybean protein isolate, and ultrasonicate the probe for 40 minutes in an ice-water bath with a power of 350 W for 3 seconds and an interval of 2 seconds. The mixed solution was centrifuged at 10000r / min for 30min, the supernatant was taken, and the supernatant was placed in a freeze dryer to lyophilize.

[0044] High performance liquid chromatography was used to d...

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Abstract

The invention belongs to the technical field of functional modification of carbon nanotubes, and particularly relates to a method for using isolated soybean protein to functionally modify a single-walled carbon nanotube. The method comprises the steps of adding isolated soybean protein and the single-walled carbon nanotube treated by mixed acid into water according to a certain proportion, throughcertain temperature and ultrasonic treatment, a nanometer composite material of isolated soybean protein and the purified single-walled carbon nanotube is obtained, and the composite material is thesingle-walled carbon nanotube modified and acidified through a physical reaction. Through the ultrasonic effect, isolated soybean protein forms a hydrophobic end and a hydrophilic end in the water, the hydrophobic end is adsorbed on the surface of the hydrophobic single-walled carbon nanotube through the hydrophobic effect, thus the water solubility of the single-walled carbon nanotube is improved, and as a novel carrier of medicine with slight solubility, the human body cannot be harmed.

Description

technical field [0001] The invention belongs to the technical field of functional modification of carbon nanotubes, and in particular relates to a method for functional modification of single-walled carbon nanotubes by soybean protein isolate. Background technique [0002] Single-walled carbon nanotubes have good transmembrane properties and a high specific surface area, enabling them to easily enter cells and load a large amount of drugs, so single-walled carbon nanotubes have important development potential and application prospects in the field of biomedicine. However, due to the poor solubility of single-walled carbon nanotubes in aqueous solution, they are prone to agglomeration and precipitation. If single-walled carbon nanotubes pass through the cell membrane and enter cells, they will be deposited in the cells and eventually cause tissue lesions. Therefore, untreated single-walled carbon nanotubes are toxic to cells. In order to realize the wide application of single...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/174C01B32/159A61K47/04A61K47/42
CPCA61K47/02A61K47/42C01B2202/02
Inventor 牛宝龙李文凤王寒王慧芳高向华张杰
Owner TAIYUAN UNIV OF TECH
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