Preparation method of cellulose-based oil-water separation thin film

A technology for separating membranes and cellulose, applied in semipermeable membrane separation, chemical instruments and methods, membranes, etc., can solve the problems of weak interaction between hydrophobic particles and substrates, poor stability, and easy falling off

Inactive Publication Date: 2017-05-31
FUJIAN AGRI & FORESTRY UNIV
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Problems solved by technology

Because the hydrophobic particles are not covalently bonded to the filter paper, the interaction betwee

Method used

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  • Preparation method of cellulose-based oil-water separation thin film
  • Preparation method of cellulose-based oil-water separation thin film

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preparation example Construction

[0024] A preparation method of cellulose-based oil-water separation membrane, comprising the following steps:

[0025] (1) immerse the cellulose filter paper in an inert solvent, drop an acid-binding agent and an acyl halide reagent to react, and obtain a filter paper with a macromolecular initiator grafted on the surface;

[0026] The inert solvent is selected from any one of dichloromethane, chloroform, tetrahydrofuran, hexane, xylene, and toluene.

[0027] The acid-binding agent is any one of pyridine, triethylamine, and 4-dimethylaminopyridine, and the mass ratio is acid-binding agent: filter paper = 0.1-6: 1, preferably acid-binding agent: filter paper = 0.4-3 :1.

[0028] The acyl halide reagent is any one of 2-bromoisobutyryl bromide, 2-chloroisobutyryl chloride, chloroacetyl chloride, bromoacetyl bromide, 2-chloropropionyl chloride, 2-bromopropionyl bromide, and the acyl The mass ratio of the halogen reagent to the filter paper is 0.1-15:1, preferably 0.4-6:1.

[00...

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Abstract

The invention provides a preparation method of a cellulose-based oil-water separation thin film. Firstly, an acyl halide reagent and filter paper react to generate a macroinitiator, hydrophobic monomers and the macroinitiator carry out ATRP, hydrophobic and oleophylic graft polymerization on the surface of the filter paper is achieved, and the filter paper with oil-water separation performance is obtained. The filter paper is used as a base material, the hydrophobic monomers are adopted for carrying out interface graft modification on the filter paper, hydrophobic and oleophylic performance is provided for the filter paper, and the preparation method can be applied to oil-water separation treatment such as sweater oil dirt, gasoline recycling and automobile clear filtering.

Description

technical field [0001] The invention relates to a separation film, in particular to a preparation method of a cellulose-based oil-water separation film. Background technique [0002] Ocean crude oil spills, oil field oil production sewage pollution, and organic chemical spills have caused extremely serious damage to people's living environment and even ecosystems. Gravity separation method, air flotation method, filtration method, adsorption method, coarse granulation method, ultrasonic method and other methods have been applied to oil-water separation. The research and development of oil-water separation means and its materials has become an important field in the filtration and separation industry. Research and development of durable and efficient oil-water separation materials is an urgent problem to be solved in human life and industrial production. [0003] Many methods have been used to hydrophobize filter paper, cotton cloth and other materials to make them hydropho...

Claims

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Application Information

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IPC IPC(8): C08J7/16B01D67/00B01D69/02B01D71/78C02F1/44C02F103/10
CPCC08J7/16B01D67/0006B01D69/02B01D71/78B01D2323/04C02F1/44C02F2103/007C02F2103/10C08J2301/02
Inventor 吴慧陈礼辉黄六莲林新兴巫龙辉肖禾曹石林
Owner FUJIAN AGRI & FORESTRY UNIV
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