Patterned hydrogel antifouling material and preparation method thereof

A hydrogel, patterned technology, applied in antifouling/underwater coatings, coatings, paints containing biocides, etc., can solve the ecological environmental hazards of chemical antifouling coatings, cannot inhibit marine biofouling, High cost and other problems, to achieve the effect of good anti-bioadhesion performance, uniform and controllable micropore size, and good oleophobic performance

Active Publication Date: 2018-07-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical antifouling coatings are more harmful to the ecological environment and will cause irreversible damage, while fouling desorbable coatings are expensive, have poor mechanical properties, are easy to tear, and can be effectively removed only at a certain speed fouling organisms
None of these antifouling coatings can directly inhibit marine biofouling in a green and environmentally friendly manner, so it is difficult to effectively achieve antifouling when marine facilities (such as ships) are moored or anchored

Method used

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  • Patterned hydrogel antifouling material and preparation method thereof
  • Patterned hydrogel antifouling material and preparation method thereof
  • Patterned hydrogel antifouling material and preparation method thereof

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preparation example Construction

[0034] The preparation method of the patterned hydrogel antifouling material of the present invention comprises the following steps:

[0035] Step S1, using the breath template method to prepare a porous template

[0036] Prepare a solution for forming a porous template, which includes a template polymer, a surfactant P123 with a concentration of 0.2-2 mg / mL and an organic solvent; use the breathing template method to obtain a porous template with a honeycomb patterned structure, and the reaction temperature is 25 ° C to 30 ° C , the relative humidity is 20 to 40%; preferably, the template polymer is polystyrene with a molecular weight of 200,000 to 500,000 Daltons, its concentration is 3 to 15 mg / mL, and the organic solvent is chloroform; preferably, the template polymer The compound is polylactic acid-glycolic acid copolymer with a molecular weight of 40000-60000 daltons, its concentration is 10-20% (w / v), and the organic solvent is dichloromethane.

[0037] Step S2, prepar...

Embodiment 1

[0047] The preparation method of the patterned hydrogel antifouling material of the present embodiment comprises the following steps:

[0048] Step S1, using the breath template method (Breath Figure) to prepare a porous template

[0049] Prepare a polystyrene porous template by using the breath template method (Breath Figure), configure a solution to form a porous template, wherein the molecular weight of polystyrene is 350,000 Daltons, the concentration is 6.0 mg / mL, and the concentration of surfactant P123 is 0.5 mg / mL, chloroform as a solvent; the porous template of the honeycomb patterned structure is obtained by the breathing template method, the reaction temperature is 25°C-30°C, and the relative humidity is 20-40%.

[0050] Step S2, preparing a double network nanocomposite hydrogel on the porous template prepared in step S1

[0051] Configuration precursor solution, wherein chitosan 2.0wt%, glacial acetic acid 1.0wt%, acrylamide 24.0wt%, N,N'-methylenebisacrylamide 0...

Embodiment 2

[0059] The preparation method of the patterned hydrogel antifouling material of the present embodiment comprises the following steps:

[0060] Step S1, using the breath template method (Breath Figure) to prepare a porous template

[0061] Prepare a polystyrene porous template by the Breath Figure method, configure a solution to form a porous template, wherein the molecular weight of polystyrene is 200,000 Daltons, the concentration is 15.0 mg / mL, and the concentration of surfactant P123 is 2.0 mg / mL , chloroform is used as a solvent; a porous template with a honeycomb patterned structure is obtained by a breathing template method, the reaction temperature is 25° C. to 30° C., and the relative humidity is 20 to 40%.

[0062] Step S2, preparing a double network nanocomposite hydrogel on the porous template prepared in step S1

[0063] Configuration precursor solution, wherein chitosan 1.0wt%, glacial acetic acid 0.2wt%, acrylamide 16.0wt%, N,N'-methylenebisacrylamide 0.005wt% a...

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Abstract

The invention discloses a patterned hydrogel antifouling material and a preparation method thereof. Specifically, the patterned hydrogel antifouling material is a double-network nanocomposite hydrogel, wherein the surface of the double-network nanocomposite hydrogel is provided with hemispherical micro bulges; the double-network nanocomposite hydrogel comprises a first network hydrogel, a second network hydrogel and nanoparticles; and the nanoparticles are doped in the first network hydrogel and the second network hydrogel. Compared with the prior art, the patterned hydrogel antifouling material provided by the scheme of the invention remains excellent mechanical properties of the double-network nanocomposite hydrogel, is free of any biocides, and has higher underwater lipophobicity and antifouling performance compared with a smooth hydrogel material.

Description

technical field [0001] The invention relates to the field of preparation of high-performance and high-strength hydrogel materials, in particular to a patterned hydrogel antifouling material and a preparation method thereof. Background technique [0002] The hydrogel material is a three-dimensional network structure formed by polymer chain cross-linking, and a large amount of solvent water (50%-90%) can be accommodated in its porous structure. Hydrogel materials have many unique properties, such as swelling / deswelling effects, stimuli-responsive properties, shock absorption and low sliding friction, etc. And marine antifouling and other fields have important applications. However, conventional polymer hydrogels suffer from soft and fragile mechanical properties, low fracture energy, and low elastic modulus. The development of preparation methods for double network hydrogels and nanocomposite hydrogels provides an effective means to improve the mechanical properties of hydro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075C08J3/24C08J3/28C08F251/00C08F220/56C08F222/38C08F2/44C09D151/02C09D5/16C08L51/02
CPCC08F2/44C08F251/00C08J3/075C08J3/24C08J3/28C08J2351/02C08K3/346C08K2201/011C09D5/1662C09D151/02C08F220/56
Inventor 林显坤贺强张秀玉黄晓迪郭斌魏志高
Owner HARBIN INST OF TECH
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