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Method for constructing temperature-sensitive type carbon nanotube composite material on basis of carbon dot modification

A technology of carbon nanotubes and composite materials, applied in the field of temperature-sensitive intelligent responsive materials, can solve the problems of destroying structure and properties, restricting applications, unable to combine or modify inorganic substances, etc., achieving simple production, reduced interference, and high yield. Effect

Active Publication Date: 2019-07-05
LIAONING UNIVERSITY
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Problems solved by technology

But at this stage, its combination with inorganic substances usually comes at the cost of destroying the surface of inorganic substances, and it cannot be directly combined or modified with inorganic substances, which destroys its own structure and properties and limits its application. The method of linking it with non-destructive modification of inorganic substances

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  • Method for constructing temperature-sensitive type carbon nanotube composite material on basis of carbon dot modification
  • Method for constructing temperature-sensitive type carbon nanotube composite material on basis of carbon dot modification
  • Method for constructing temperature-sensitive type carbon nanotube composite material on basis of carbon dot modification

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Embodiment 1

[0042] Example 1 Method for constructing temperature-sensitive carbon nanotube composites based on carbon dot modification

[0043] (1) Preparation method

[0044] 1. Preparation of CDs

[0045] In a beaker, add 5g of citric acid and 5g of glycine, add 20ml of water, sonicate until dissolved, put it in a reaction kettle, react at 180°C for 6h, let stand, cool to room temperature, filter the filtrate to obtain CDs.

[0046] 2. Preparation of CNT-CDs

[0047] In the round bottom flask, add 0.5g carbon nanotube CNTs and 60ml CDs, first sonicate for 3h, then stir for 3h, repeat the steps of sonication and stirring for 3 times until the CNTs are completely dissolved, shake the round bottom flask and there are no obvious black particles. Pour the mixed solution into a centrifuge tube, centrifuge at 11000r for 30min, discard the yellow-green CDs solution and leave the black matter on the wall of the centrifuge tube, and perform centrifugal washing, that is, add an appropriate amoun...

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Abstract

The invention relates to a method for constructing a temperature-sensitive type carbon nanotube composite material on the basis of carbon dot modification. According to the adopted technical scheme, acarbon nanotube CNT is adopted as a substrate, and carbon dots CDs are added for ultrasonic treatment, stirring and centrifuging to obtain a composite CNT-CDs; an adjustment system is alkaline, purified NIPAM (N-isopropylacrylamide) and an initiator are added into the CNT-CDs under the protection of nitrogen for a reaction at 35-40 DEG C for 2-3 hours and a reaction at 80-90 DEG C for 4-6 hours,and centrifugal washing is carried out to obtain the temperature-sensitive type carbon nanotube composite material CNT-CDs-PNIPAM on the basis of carbon dot modification. By adopting the temperature-sensitive type composite material CNT-CDs-PNIPAM prepared by means of the method, non-destructive modification is realized, and the prepared temperature-sensitive intelligent responsive material not only maintains the properties and morphology of the CNTs but also has the temperature sensitivity of PNIPAM.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, and specifically relates to a carbon dot-based assembly, which connects CNTs and PNIPAM through CDs to realize non-destructive modification, and the temperature-sensitive intelligent responsive material obtained not only maintains the properties and appearance of CNTs , and at the same time have the temperature sensitivity of PNIPAM. Background technique [0002] Due to small changes in the external environment such as external temperature, pH, light, zoom, salt, electric field, and pressure, the performance (eg, volume change) of smart devices will change significantly. They have potential application prospects in the fields of tissue engineering, drug controlled release carrier, regenerative response and so on. Researchers in materials science and polymer science have focused on their intrinsic responsive properties for decades. Among them, temperature-sensitive materials are the most resear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F120/54C08F2/44C08K3/04
CPCC08F2/44C08F120/54C08K3/04C08K3/041
Inventor 张谦解晓妍夏立新田慧
Owner LIAONING UNIVERSITY
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