Preparation method of magnetic superhydrophobic ethyl cellulose sponge for oil-water separation

Abstract

The present invention relates to a preparation method of a magnetic superhydrophobic ethylcellulose sponge for oil-water separation. The preparation method specifically comprises: preparing silane hydrophobically modified ethyl cellulose, introducing the silane hydrophobically modified ethyl cellulose adopted as a matrix into oleic acid-coated triiron tetraoxide magnetic nanoparticles prepared through a co-precipitation method, and obtaining a magnetic superhydrophobic three-dimensional porous material capable of efficiently performing oil-water separation through a pore forming agent occupation method. According to the present invention, the ethyl cellulose is firstly used as the oil-water separation material, such that the preparation method has advantages of economy, high efficiency, simple preparation process, wide raw material source, green environmental protection, and durability; the prepared superhydrophobic porous sponge has advantages of excellent oil absorption, excellent stability, excellent recyclability, excellent biodegradability, and the like; and the preparation method further has characteristics of simpleness, easy performing, industrial production of the raw materials, and good promotion application value.

Description

technical field [0001] The invention belongs to the field of polymer materials and functional materials, and in particular relates to a preparation method of a magnetic superhydrophobic ethyl cellulose sponge used for oil-water separation. Background technique [0002] In recent years, crude oil extraction positions have begun to shift from the mainland to the sea. The exploitation of offshore oil has become one of the important ways to obtain energy, but accidents of various types of oil leakage are becoming more and more common. While causing great harm to the local marine ecological environment, it also makes the treatment of oil spill pollution a focus of attention from all walks of life. How to effectively realize oil-water separation is of great significance to the protection of marine ecological environment. [0003] The physical absorption method of hydrophobic three-dimensional porous materials is a very effective oil-water separation technology. Three-dimensional...

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Problems solved by technology

[0004] However, the above-mentioned hydrophobic sponges will face many problems in practical applications, such as complicated processing and preparation process, expensive experimental reagents and equipment, poor reusability of materials, secondary pollution in the preparation process, etc.

In particular, most of these modified sponges use materials such as polyurethane and melamine resin as templates, and the template preparation process will cause environmental pollution.

Although the reusability of the sponge is good, its recyclability is poor, especially it is difficult to degrade in the natural environment, which does not conform to the concept of green chemistry and the trend of the times.

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