Super-hydrophobic textile prepared from modified polyester fiber based on dopamine and preparation method thereof

A polyester fiber and dopamine technology, which is applied in the field of functionalized textile preparation, can solve the problems of complicated operation, expensive equipment, limited practical application of superhydrophobic surfaces, etc., and achieves the effect of mild conditions and simple reaction process.

Inactive Publication Date: 2015-10-21
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to construct appropriate rough structures, various methods have been proposed and applied, including physical and chemical etching methods, template methods, sol-gel methods, particle modification methods, etc., but some of these methods are complicated to operate. , use toxic solvents, or use expensive equipment, which greatly limits the practical application of superhydrophobic surfaces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] First, immerse the polyester fiber fabric in an airtight container containing a phosphate (PBS) buffer solution with a dopamine concentration of 1 mg / mL, and react at 40°C for 4 hours; After reacting at 40°C for 5 h in a closed container of 10 mM tris (Tris) buffer solution per mL, the textile was ultrasonicated for 30 min in an excess of absolute ethanol solution to remove loose polydopamine nanoparticles deposited on the surface of the fiber. Particles, dried at 80°C; finally, immerse the polyester textile in an ethanol solution in which 1% perfluorodecyltrichlorosilane was dissolved, let it stand for 15 minutes, take it out, bake at 80°C for 15 minutes, and bake at 170°C 5min. The contact angle of the obtained polyester textile surface is 156.58°±1.16°.

Embodiment 2

[0026] First, immerse the polyester fiber fabric in an airtight container filled with a phosphate (PBS) buffer solution with a dopamine concentration of 2 mg / mL, and react at 40°C for 4 hours; After reacting at 40°C for 5 h in a closed container of 10 mM tris (Tris) buffer solution per mL, the textile was ultrasonicated for 30 min in an excess of absolute ethanol solution to remove loose polydopamine nanoparticles deposited on the surface of the fiber. The particles were dried at 80°C; finally, the polyester textile was immersed in a 1% ethanol solution of perfluorodecyltrichlorosilane, left to stand for 15 minutes, then taken out, baked at 80°C for 15 minutes, and then at 170°C for 5 minutes. The contact angle of the obtained polyester textile surface is 160.26°±1.12°.

Embodiment 3

[0028] First, immerse the polyester fiber fabric in an airtight container containing a phosphate (PBS) buffer solution with a dopamine concentration of 5 mg / mL, and react at 40°C for 4 hours; In a closed container of 10mM Tris (Tris) buffer solution per mL, after reacting at 40°C for 5h, the textile was ultrasonically removed for 30min in excess absolute ethanol solution to remove the polydopamine nanoparticles deposited on the fiber surface, Dry at 80°C; finally, immerse the polyester textile in 1% ethanol solution of perfluorodecyltrichlorosilane, take it out after standing for 15 minutes, bake at 80°C for 15 minutes, and bake at 170°C for 5 minutes. The contact angle of the obtained polyester textile surface is 153.90°±1.77°.

[0029] The present invention utilizes the characteristics of different sizes of polydopamine nanoparticles produced by the polymerization of dopamine in different buffer solution systems, and only relies on the self-oxidative polymerization of dopami...

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Abstract

The invention provides a super-hydrophobic textile prepared from a modified polyester fiber based on dopamine and a preparation method thereof, the preparation method comprises the steps that a polyester fabric is soaked into different buffer solutions in sequence, nano-particles produced by dopamine polymerization are deposited on the fiber surface adhered with polydopamine, the fiber is finally treated by a low surface energy modifier to obtain the super-hydrophobic textile; the buffer solution at east comprises two kinds of different buffer solutions, namely, a phosphate buffer solution of the dopamine and a trihydroxymethyl aminomethane buffer solution of the dopamine. According to the super-hydrophobic textile prepared from the modified polyester fiber based on the dopamine and the preparation method thereof, the characteristic that the sizes of polydopamine nano particles produced by dopamine polymerization in different buffer solution systems is utilized, autoxidation polymerization of dopamine is utilized to be adhered to and deposited on the fiber surface to form a rough structure required by the super-hydrophobic surface, and the super-hydrophobic surface can be prepared after the rough structure is treated by the low surface energy; the reaction process is simple, the condition is mild; and the water drop contact angle of the super-hydrophobic surface prepared by the invention is more than 150 degree.

Description

【Technical field】 [0001] The invention relates to a preparation method of functionalized textiles, in particular to a superhydrophobic textile prepared from bionic polymerized modified fibers on the fiber surface and a preparation method thereof. 【Background technique】 [0002] Surface modification technology is of great significance to the application of materials, and bionic technology has aroused great interest in recent years. The biomimetic preparation of super-hydrophobic surfaces with "lotus leaf effect" is a typical example. The preparation of super-hydrophobic surfaces requires both an appropriate rough structure and low surface energy characteristics of the material surface. In order to construct appropriate rough structures, various methods have been proposed and applied, including physical and chemical etching methods, template methods, sol-gel methods, particle modification methods, etc., but some of these methods are complicated to operate. , use toxic solvent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/61D06M13/517D06M13/368D06M11/71D06M101/32
Inventor 薛朝华姬雪青张静贾顺田
Owner SHAANXI UNIV OF SCI & TECH
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