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Preparation and application of underwater super-oleophobic and under-oil hydrophilic emulsion separation functional fibers

An underwater superoleophobic and emulsion separation technology, which is applied in the directions of immiscible liquid separation, liquid separation, and repelling fibers to liquids, etc. problem, to achieve the effect of stable and reusable, simple preparation method and high separation efficiency

Active Publication Date: 2020-12-18
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above separation materials usually do not have the performance to separate oil-in-water and water-in-oil emulsions

Method used

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  • Preparation and application of underwater super-oleophobic and under-oil hydrophilic emulsion separation functional fibers
  • Preparation and application of underwater super-oleophobic and under-oil hydrophilic emulsion separation functional fibers
  • Preparation and application of underwater super-oleophobic and under-oil hydrophilic emulsion separation functional fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of an emulsion separation functional fiber with underwater superoleophobicity and oil hydrophilicity:

[0034] a. Soak 15 g skin collagen fibers in 200 mL deionized water for 24 h;

[0035] b. Add 200 mL of zirconium sulfate solution (containing 0.05 mol Zr(SO 4 ) 2 ), adjust the pH value to 1.8-2.0 at 30 o C stirred and reacted for 4.0 h;

[0036] c. Adjust the pH value to 4.0-4.5 at 40 o C stirred and reacted for 4.0 h;

[0037] d. The obtained product is filtered, washed with deionized water, washed with absolute ethanol, and dried to obtain the emulsion separation functional fiber, which is named CFs-Zr.

[0038] It has been determined that in the air medium, the complete infiltration time of water droplets on the surface of the emulsion separation functional fiber CFs-Zr prepared in this example is 0.4 s, and the photo of the contact angle during the infiltration process is as follows: figure 1 Shown; and the infiltration speed of water drople...

Embodiment 2

[0049] (1) Preparation of an emulsion separation functional fiber with underwater superoleophobicity and oil hydrophilicity:

[0050] a. Soak 15 g skin collagen fibers in 200 mL deionized water for 24 h;

[0051] b. Add 200 mL ferric sulfate solution (containing 0.05 mol Fe 2 (SO 4 ) 3 ), adjust the pH value to 1.8-2.0 at 30 o C stirred and reacted for 4.0 h;

[0052] c. Adjust the pH value to 4.0-4.5 at 40 o Stir at C for 4.0 h;

[0053] d. The obtained product is filtered, washed with deionized water, washed with absolute ethanol, and dried to obtain the emulsion separation functional fiber, which is named as CFs-Fe.

[0054] (2) Preparation of emulsion:

[0055] Same as emulsion composition and preparation method among the embodiment 1.

[0056] (3) Application of the emulsion separation functional fiber CFs-Fe with underwater superoleophobicity and oil hydrophilicity: 1.5 g of the emulsion separation functional fiber CFs-Fe prepared above was dry packed into a colu...

Embodiment 3

[0059] (1) Preparation of an emulsion separation functional fiber with underwater superoleophobicity and oil hydrophilicity:

[0060] a. Soak 15 g skin collagen fibers in 200 mL deionized water for 24 h;

[0061] b. Add 200 mL of titanium sulfate solution (containing 0.05 mol Ti(SO 4 ) 2 ), adjust the pH value to 1.8-2.0 at 30 o C stirred and reacted for 4.0 h;

[0062] c. Adjust the pH value to 4.0-4.5 at 40 o Stir at C for 4.0 h;

[0063] d. The obtained product is filtered, washed with deionized water, washed with absolute ethanol, and dried to obtain the emulsion separation functional fiber, which is named as CFs-Ti.

[0064] (2) Preparation of emulsion:

[0065] Same as emulsion composition and preparation method among the embodiment 1.

[0066] (3) Application of the emulsion separation functional fiber CFs-Ti with underwater superoleophobicity and oil hydrophilicity: 1.5 g of the emulsion separation functional fiber CFs-Ti prepared above was dry packed into a col...

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Abstract

The invention discloses emulsion separation functional fibers. The functional fibers are prepared by taking skin collagen fibers as a base material and regulating and controlling the surface wettability of the skin collagen fibers by loading metal ions on the skin collagen fibers. The emulsion separation functional fibers have special wetting performance of underwater super-oleophobicity and under-oil hydrophilicity, can separate water-in-oil emulsion and oil-in-water emulsion, have double separation performance, and are high in separation efficiency, large in separation flux, good in stability and reusable.

Description

technical field [0001] The invention relates to the field of oil-water separation, in particular to the preparation and application of an emulsion separation functional fiber with underwater superoleophobicity and underwater hydrophilicity. Background technique [0002] Surface wettability plays a vital role in the field of oil-water separation. Controlling the surface wettability of materials can achieve effective separation of complex emulsions. Typically, the surface wettability of a material is manipulated so that it has opposite affinities for water and oil to selectively trap one phase in the emulsion while allowing the other phase to pass freely, thereby achieving emulsion separation (Ma Q, ChengH, Fane A G, et al. Recent development of advanced materials with special wettability for selective oil / water separation [J]. Small, 2016, 12 (16):2186-2202.). Generally, superhydrophilic materials have underwater superoleophobicity, which can selectively trap the oil phase ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/56D06M11/57B01D17/04B01D17/022D06M101/14
CPCB01D17/04D06M11/56D06M11/57D06M2101/14D06M2200/11
Inventor 黄鑫陈光艳石碧
Owner SICHUAN UNIV
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