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Amphion polymer modified anti-adhesion surface with dopamine as anchor, and making method thereof

A technology of zwitterions and polymers, which is applied in the field of anti-adhesion surface treatment and surface treatment, can solve the problems of poor anti-bioadhesion surface stability and poor stability, and achieve the effect of improving surface grafting efficiency and good stability

Active Publication Date: 2016-02-03
广东威凯表面技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the prior art, the present invention uses dopamine as the anchor, endows the zwitterionic polymer with strong adhesion between the surface, and solves the problem of poor stability of the current anti-bioadhesion surface during use, especially in the Poor stability in water environment

Method used

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  • Amphion polymer modified anti-adhesion surface with dopamine as anchor, and making method thereof
  • Amphion polymer modified anti-adhesion surface with dopamine as anchor, and making method thereof
  • Amphion polymer modified anti-adhesion surface with dopamine as anchor, and making method thereof

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Embodiment 1

[0049] (1) Synthesis of dopamine methacrylamide: 5.00g (26.40mmol) dopamine hydrochloride was dissolved in deoxygenated Na 2 B 4 o 7 In the saturated solution, 12mL of tetrahydrofuran solution dissolved with 2.00g (13.20mmol) 2-methacrylic anhydride was added dropwise to the above solution, and during the dropping process, the pH value of the mixed solution was maintained at 8 with NaOH solution; After allowing this reaction system to react for 8 hours at room temperature under nitrogen protection conditions, the reaction solution was washed with ethyl acetate, and the filtrate was obtained by filtration; the pH value of the filtrate was adjusted to 2 with HCl solution, and then extracted with ethyl acetate, Take the ethyl acetate phase, precipitate in n-hexane, and filter to obtain a light brown solid, that is, dopamine methacrylamide.

[0050] figure 1 Infrared spectrum of dopamine methacrylamide. It can be seen from its infrared spectrum that at 3365cm -1 、1648cm -1 a...

Embodiment 2

[0065] (1) Synthesis of dopamine methacrylamide: 5.00g (26.40mmol) of dopamine hydrochloride was dissolved in deoxygenated saturated ammonia solution, and 24mL of 2-methacrylic anhydride was dissolved with 4.00g (26.40mmol) The oxane solution was added dropwise to the above solution, and during the dropping process, the NaCO 3 The solution keeps the pH value of the mixed solution at 9; after making this reaction system react for 10 hours at room temperature and under nitrogen protection conditions, the reaction mixture is washed with ether, filtered to obtain the filtrate; 2 SO 4 Solution Adjust the pH value of the filtrate to 3, then extract with ether, take the ether phase, precipitate in n-octane, and filter to obtain a light brown solid, namely dopamine methacrylamide. The infrared spectrum and nuclear magnetic resonance spectrum of the dopamine methacrylamide that this embodiment makes are respectively with figure 1 , figure 2 Consistent, no repetition.

[0066] (2) ...

Embodiment 3

[0073] (1) Synthesis of dopamine methacrylamide: 5.00g (26.400mmol) dopamine hydrochloride was dissolved in deoxygenated NaOH saturated solution; The solution was added dropwise to the above solution, and during the dropping process, the pH value of the mixed solution was maintained at 10 with ammonia water; after making this reaction system react for 12 hours at room temperature and under nitrogen protection conditions, the reaction mixture was used Wash with acetone, filter to obtain the filtrate; use H 3 PO 4 Solution Adjust the pH value of the filtrate to 2, then extract with petroleum ether, take the petroleum ether phase, precipitate in n-pentane, and filter to obtain a light brown solid, namely dopamine methacrylamide. The infrared spectrum and nuclear magnetic resonance spectrum of the dopamine methacrylamide that this embodiment makes are respectively with figure 1 , figure 2 Consistent, no repetition.

[0074] (2) Synthesis of zwitterionic polymers containing su...

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Abstract

The invention discloses an amphion polymer modified anti-adhesion surface with dopamine as an anchor, and a making method thereof. The making method comprises the following steps: modifying the surface of a base material with dopamine methacrylamide under alkaline conditions, wherein the base material is not pretreated before modification; and grafting the surface of the base material with a thio group-containing amphion polymer through a thio-ene click chemical reaction under ultraviolet light initiation conditions to prepare the amphion polymer modified anti-adhesion surface with dopamine as anchor. The base material which can be modified comprises glass flakes, mica sheets, wood blocks, polyethylene glycol terephthalate, nonwoven fabrics, cotton fabrics and metal sheets; and the amphion polymer modified anti-adhesion surface with dopamine as an anchor has a good anti-adhesion effect on bacteria, and the antibacterial adhesion effect of the surface immersed in water for 5d has no obvious decreasing trend.

Description

technical field [0001] The invention relates to an anti-adhesion surface treatment method, in particular to an anti-adhesion surface modified by a zwitterionic polymer anchored by dopamine and a preparation method thereof, belonging to the technical field of surface treatment methods. Background technique [0002] The phenomenon of bioadhesion is ubiquitous in nature and our daily life. It usually refers to the state in which two substances, at least one of which is a substance with natural biological properties, are permanently adhered together by the action of interfacial force . In daily life and industrial production, most of the time it is necessary to prevent the occurrence of such bioadhesion. For example, when a ship travels in the ocean, the adhesion of algae and microorganisms in the ocean will not only increase frictional resistance and energy consumption, but also provide a corrosive environment and accelerate the aging of the hull; the adhesion of blood, protei...

Claims

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Application Information

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IPC IPC(8): C08F8/30C08F220/60C08F220/34C08F228/02
Inventor 李光吉王立莹张子勋陈志锋周伟吴叔青
Owner 广东威凯表面技术有限公司
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