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

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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 su...

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

Examples

Experimental program
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Effect test

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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