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Method for preparing ordered ferriferrous oxide/chitosan nanometre composite material

A technology of ferroferric oxide and chitosan nanometers, which is applied in the field of preparation of ferroferric oxide/chitosan nanocomposites, can solve the problems of the preparation of magnetic chitosan three-dimensional materials, the decline of material mechanical properties, Weak interface binding force and other problems, to achieve the effect of reducing treatment time, good induction, and mild conditions

Inactive Publication Date: 2007-09-12
ZHEJIANG UNIV
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Problems solved by technology

The composites prepared by this method are due to Fe 3 o 4 Inhomogeneous dispersion, Fe 3 o 4 The interface binding force between the polymer material and the polymer material is weak, resulting in a decline in the mechanical properties of the material
At the same time, from the existing literature review, there is no report on the preparation of magnetic chitosan three-dimensional materials.

Method used

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  • Method for preparing ordered ferriferrous oxide/chitosan nanometre composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] 1) Weigh 10g of chitosan powder and add it to 163.6ml of 2% (v / v) acetic acid solution and stir for 1h, then add 18.2ml of FeCl with a concentration of 0.25mol / L 2 solution, stirred at a constant speed for 0.5h, then added 18.2ml of FeCl with a pH3 The solution was stirred at a constant speed for 1 hour to obtain the ferric oxide / chitosan precursor solution, which was sealed and allowed to stand for degassing for 6 hours.

[0012] 2) Take a small amount of pure chitosan solution and inject it into a cylindrical mold to form an inner film, pour out the excess chitosan solution, soak in 5% (wt) NaOH solution for 2 hours, and take out the mold.

[0013] 3) Fill the mold with the ferric oxide / chitosan precursor solution, then put the mold filled with the ferric oxide / chitosan precursor solution into 5% (wt) NaOH coagulation solution, let it stand for 0.5 After 10 minutes, the mold was removed, and the formed gel composite material was fixed in the magnetic field generating ...

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Abstract

The invention discloses a method for preparing ordered ferriferrous oxide / chitosan nanometre composite material comprising the following steps, making chitosan solution from chitosan powder with thin acid solution, charging FeCl2 and FeCl3 solution into the chitosan solution, forming ferriferrous oxide / chitosan precursor solution, loading the precursor solution into a mould with a layer of pure chitosan film internally, placing into freeze liquid, removing the mould and applying magnetic field onto the two ends of the gel composite material for material forming, flushing to neutral with distilled water and drying.

Description

technical field [0001] The invention relates to a preparation method of iron ferric oxide / chitosan nano composite material, in particular to a preparation method of orderly arranged iron ferric oxide / chitosan nano composite material. Background technique [0002] The perfect structure and unique biological activity of biominerals make it a source of ideas for the preparation of new organic / inorganic hybrid nanocomposites. In the currently prepared organic-inorganic composite materials, most of the inorganic particles are randomly dispersed, but the orderly arrangement of inorganic nanoparticles in organic matter is a fundamental manifestation of life, and orderly arrangement will make the performance of the material more excellent , human bone is a good example of an organic-inorganic composite material in which inorganic particles are ordered in nature. Magnetic polymer composites can induce the growth of bone tissue. At present, the method of preparing magnetic polymer co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L5/08C08K3/22
Inventor 胡巧玲陈福平
Owner ZHEJIANG UNIV
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