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Preparation method and application of double-sided oleophobic superhydrophobic-superhydrophilic janus material

A super-hydrophobic and super-hydrophilic technology, applied in the direction of fiber type, liquid-repellent fiber, fiber treatment, etc., can solve the problem of not having double-sided oleophobicity, and achieve superior washing resistance, short operation process, and firmness high degree of effect

Active Publication Date: 2021-09-21
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] It can be seen from the above that the currently disclosed superhydrophobic-superhydrophilic Janus fabrics or membrane materials do not have double-sided oleophobicity, and can only realize the directional transport of water in the air. Related reports on membrane materials

Method used

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  • Preparation method and application of double-sided oleophobic superhydrophobic-superhydrophilic janus material
  • Preparation method and application of double-sided oleophobic superhydrophobic-superhydrophilic janus material
  • Preparation method and application of double-sided oleophobic superhydrophobic-superhydrophilic janus material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A double-sided oleophobic superhydrophobic-superhydrophilic Janus-type fabric, such as figure 1 As shown, it includes a substrate 1, the surface of the substrate 1 is coated with a hydrophilic-oleophobic layer 2, and a surface of one side of the hydrophilic-oleophobic layer 2 is sprayed with a hydrophobic-oleophobic layer 3. The substrate 1 is polyester fabric.

[0058] The preparation method of the above-mentioned double-sided oleophobic superhydrophobic-superhydrophilic Janus fabric, the specific steps are:

[0059] (1) adding photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-acetone into the mixed solution of hydrophilic monomer methacrylic acid, POSS acrylate and perfluorohexyl ethyl acrylate, wherein, The mass ratio of methacrylic acid to POSS acrylate was 50:1, the mass ratio of methacrylic acid to perfluorohexylethyl acrylate was 5:2, and the solution was stirred at 25° C. for 10 min to obtain a modified monomer solution. Acetone was used as a solvent, mixed with th...

Embodiment 2

[0065] A preparation method of a double-sided oleophobic superhydrophobic-superhydrophilic Janus fabric, the specific steps are:

[0066] (1) adding photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-acetone into the mixed solution of hydrophilic monomer methacrylic acid, POSS acrylate and perfluorohexyl ethyl acrylate, wherein, The mass ratio of methacrylic acid to POSS acrylate was 50:1, the mass ratio of methacrylic acid to perfluorohexylethyl acrylate was 5:2, and the solution was stirred at 25° C. for 10 min to obtain a modified monomer solution. Acetone was used as a solvent, mixed with the above solution in a volume ratio of 3:1, and stirred at 25 °C for 10 min to obtain a hydrophilic-oleophobic modified solution. The photoinitiator accounted for 3wt% of the total mass of the modified monomer solution.

[0067] (2) Immerse the 5cm×5cm polyester fabric in the hydrophilic-oleophobic modified solution for 1-10min, remove the excess solution, and place it in the UV light curing a...

Embodiment 3

[0075] A preparation method of a double-sided oleophobic superhydrophobic-superhydrophilic Janus fabric, the specific steps are:

[0076] (1) adding photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-acetone into the mixed solution of hydrophilic monomer methacrylic acid, POSS acrylate and perfluorohexyl ethyl acrylate, wherein, The mass ratio of methacrylic acid to POSS acrylate was 50:1, the mass ratio of methacrylic acid to perfluorohexylethyl acrylate was 5:2, and the solution was stirred at 25° C. for 10 min to obtain a modified monomer solution. Acetone was used as a solvent, mixed with the above solution in a volume ratio of 3:1, and stirred at 25 °C for 10 min to obtain a hydrophilic-oleophobic modified solution. The photoinitiator accounted for 3wt% of the total mass of the modified monomer solution.

[0077] (2) Immerse the 5cm×5cm polyester fabric in the hydrophilic-oleophobic modified solution for 1-10min, remove the excess solution, and place it in the UV light curing a...

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Abstract

The invention relates to a preparation method and application of a double-sided oleophobic superhydrophobic-superhydrophilic Janus material. The preparation method comprises the following steps: attaching a hydrophilic-oleophobic modification solution to the outer surface of a substrate, ‑Oleophobic modification solution includes hydrophilic monomers, fluoroalkyl monomers, crosslinking agents, photoinitiators and organic solvents, and then polymerizes and crosslinks under ultraviolet light irradiation to form hydrophilic Water-oleophobic layer; a hydrophobic-oleophobic modification solution is attached to one side of the above-mentioned treated substrate, and the hydrophobic-oleophobic modification solution includes a fluoroalkyl monomer, a cross-linking agent, a photoinitiator and an organic solvent , and then after polymerization and cross-linking under ultraviolet light irradiation, a hydrophobic-oleophobic layer is formed on one side of the substrate. This material can be used for one-way moisture-guiding or moisture-absorbing and quick-drying fabrics, oil-water separation, and one-way transport of water or aqueous solutions in microfluidics, etc.

Description

technical field [0001] The invention relates to the field of functional materials, in particular to a preparation method and application of a double-sided oleophobic superhydrophobic-superhydrophilic Janus type material. Background technique [0002] Janus membrane refers to membrane materials with completely opposite properties on both sides of the membrane. In a broad sense, the concept of asymmetric Janus membrane refers to membrane materials with different properties on both sides of the membrane, including chemically active properties, wetting properties, and electrical conductivity. Among them, Janus membranes with different wettability on both sides can realize the directional transport of specific liquids, which can be used in the fields of seawater desalination, separation of different types of oil-water mixed liquids, emulsion preparation, microfluidics, and moisture-wicking smart textiles. [0003] At present, the realization of Janus fabric is mainly realized by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/356D06M11/79D06M101/32
CPCD06M11/79D06M15/3568D06M2101/32D06M2200/11D06M2200/12
Inventor 赵燕郗焕杰
Owner SUZHOU UNIV
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