Carbon nanotube/chitosan/magnetic ferrite nanoparticle composite material, and preparation method and application thereof

A carbon nanotube and nanoparticle technology, which is applied in the field of nanocomposite materials to achieve the effects of good biocompatibility, integrity protection, and easy availability of raw materials
CN102068705AInactive Publication Date: 2011-05-25SHANGHAI NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI NORMAL UNIVERSITY
Publication Date
2011-05-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a carbon nanotube / chitosan / magnetic ferrite nanoparticle composite material. A preparation method of the material comprises the following steps of: coating chitosan polymer and magnetic ferrite nanoparticles on multi-wall carbon nanotubes from inside to outside in turn; modifying the surfaces of the carbon nanotubes by coating the chitosan; and depositing the magnetic ferrite nanoparticles on the carbon nanotubes in situ by a hydrothermal method. The material prepared by the method has higher saturation magnetization rate and T2 relaxation coefficient, and is a good magnetic resonance imaging contrast medium. In the invention, concentrated acid oxidation treatment is not required to be performed on the carbon nanotubes in advance, so that the structural integrity of the carbon nanotubes is protected; and the preparation method has the advantages of readily available raw materials, low cost and the like, is easy to operate and is suitable for industrial production.
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Description

technical field

[0001] The invention relates to a carbon nanotube / chitosan / magnetic ferrite nanoparticle composite material and its preparation method and application, belonging to the technical field of nanocomposite materials. Background technique

[0002] Carbon nanotubes have been a research hotspot at home and abroad because of their excellent mechanical, thermal and electrical properties. In recent years, the application of magnetic nanoparticles in carrying drugs and magnetic resonance contrast agents has become a research hotspot. Among these applications, the problems of water solubility and biocompatibility of nanoparticles are mainly to be solved. In order to solve these problems, people wrap some macromolecules such as PEG on the surface of nanoparticles, or use SiO 2 Come to the package and get some grades.

[0003] Carbon nanotubes have good biocompatibility, and they are excellent carriers of nanoparticles. However, there are few reports on the preparation...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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