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Preparation method of superparamagnetism easily-degradable oil stain absorption material and product obtained by method

A superparamagnetic and easily degradable technology, applied in the direction of magnetic properties of inorganic materials, to achieve the effects of easy microbial decomposition, high recovery rate of waste oil and strong oil absorption performance

Inactive Publication Date: 2013-06-26
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chitosan-sodium stearate complexes are mostly used to encapsulate enzymes and drug delivery systems, but there is no research on making superparamagnetic-chitosan-sodium stearate complexes and using them to treat oil pollution to report

Method used

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  • Preparation method of superparamagnetism easily-degradable oil stain absorption material and product obtained by method
  • Preparation method of superparamagnetism easily-degradable oil stain absorption material and product obtained by method

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Embodiment 1

[0018] (a) Add 2g of glacial acetic acid to 18g of pure water to prepare a 1% acetic acid solution by mass. Accurately weigh 0.6g of chitosan, and add chitosan to 19.4g of 1% acetic acid solution by mass percentage under constant temperature stirring at 80°C, and keep the chitosan-acetic acid-water solution at 80°C In a constant temperature stirring environment.

[0019] (b) Hydrophilic superparamagnetic Fe stored at a low temperature of 3–5°C 3 o 4 The nanoparticles are taken out from the refrigerator, the magnets absorb the nanoparticles, and the Fe 3 o 4 The tetramethylammonium hydroxide (TMA) liquid with a molar concentration of 1mol / L is poured out. Weigh 0.6g of Fe 3 o 4 Add it into the chitosan-acetic acid-water solution under stirring state, and then vibrate ultrasonically for 2~3 minutes.

[0020] (c) Take pure water equal to the volume of the solution in (b), keep the temperature in an oil bath at 80°C for 10-15 minutes, dissolve 1 g of sodium stearate in the ...

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Abstract

The invention discloses a preparation method of superparamagnetism easily-degradable oil stain absorption material and a product obtained by the method. The preparation method comprises the following steps: adding superparamagnetism Fe3O4 nano particles in a chiosan-acetic acid aqueous solution while stirring, wherein the mass ratio of the Fe3O4 nano particles to the chiosan-acetic acid aqueous solution is 2%-4%; then dropwise adding the obtained Fe3O4-chiosan -acetic acid aqueous solution in an equivoluminal 3%-5% sodium stearate aqueous solution for full reaction; and carrying out vacuum filtering on the obtained Fe3O4-chiosan-sodium stearate compound solution when the solution is hot, collecting filter cakes and drying so as to obtain superparamagnetism chiosan-sodium stearate polymerization clusters. The polymerization cluster has good oil absorbing capability, the volume of the absorbed oil is 10-15 times of that of the compound; and the compound after the oil is absorbed can continue to float on the water surface and can directionally drift under the guidance of a magnet.

Description

technical field [0001] The invention relates to chemical functional materials, in particular to the field of manufacturing water surface oil pollution adsorption materials. Background technique [0002] At present, the most important oil-absorbing materials on the market are produced by mechanically rubbing the fiber-containing parts of trees and other raw materials to make the fibers more fluffy and have a larger spatial structure, and then chemically improve their surface chemical properties, thereby increasing the fiber density. oil absorption to complete. These oil-absorbing materials mainly rely on the gaps between fibers and the groups on these fibers to absorb oil. Since the basic part of the oil-absorbing materials is composed of fibers, these materials inevitably have some limitations. First, since the majority of these materials are fiber bundles, after the material absorbs the oil, the only way to collect the oil and material is by manual operation. When the col...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/32H01F1/36C08L5/08C08K3/22C08B37/08
Inventor 孟涛李伟郭婷李星黄宇石
Owner SOUTHWEST JIAOTONG UNIV
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