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Preparation method of antibacterial and bactericidal functional surface

A technology of function and lotus leaf, which is applied in the field of preparation of functional materials, can solve problems such as poor sterilization efficiency, inability to inhibit bacteria for a long time on functional surfaces, and bacterial drug resistance, so as to reduce drug resistance, produce cost-effective antibacterial, and produce at low cost Effect

Active Publication Date: 2021-06-22
FOSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, the present invention provides a The preparation method of the antibacterial and sterilizing function surface, the specific technical scheme is as follows:

Method used

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  • Preparation method of antibacterial and bactericidal functional surface
  • Preparation method of antibacterial and bactericidal functional surface
  • Preparation method of antibacterial and bactericidal functional surface

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preparation example Construction

[0025] A method for preparing an antibacterial and sterilizing functional surface in an embodiment of the present invention comprises the following steps:

[0026] Preparation of bionic lotus leaf microstructure surface;

[0027] Prepare quaternary ammonium salt cationic polymer monomer;

[0028] Pre-treating the surface of the biomimetic lotus leaf microstructure, then soaking in a coupling agent overnight, and grafting bromine active sites on the surface of the biomimetic lotus leaf microstructure;

[0029] Continue to add solvent, the quaternary ammonium salt cationic polymer monomer, catalyst, free initiator and ligand to remove oxygen, so that a layer of nanometer polymer brush structure can be grown on the surface of the bionic lotus leaf microstructure to obtain antibacterial and bactericidal functional surface.

[0030] The preparation method of the antibacterial and sterilizing functional surface in the above scheme is simple, and the preparation of the bionic lotus...

Embodiment 1

[0054] A method for preparing an antibacterial and sterilizing functional surface, comprising the following steps:

[0055] A silicon wafer with a P-type crystal type and a thickness of 450 μm was selected. Under the conditions of a photoresist thickness of 9 μm and an etching rate of 0.26 μm / cycle, a regular rhombus pattern was prepared. The rhombus pattern was composed of multiple The bionic lotus leaf microstructure surface composed of rectangular ribs, and the gap between the plurality of rectangular ribs is 2 μm, the width of the plurality of rectangular ribs is 2 μm, and the lengths of the plurality of rectangular ribs are 2 μm, 4 μm, and 8 μm respectively and 12μm;

[0056] According to the molar ratio, fully stir and mix the dimethylamine and epichlorohydrin with a ratio of 1:1 to obtain product A; according to the molar ratio of product A and bromooctane as 1:2, continue to the product A Add bromooctane and ethanol, stir well, and reflux and condense overnight at 65°...

Embodiment 2

[0060] A method for preparing an antibacterial and sterilizing functional surface, comprising the following steps:

[0061] A silicon wafer with a P-type crystal type and a thickness of 550 μm was selected. Under the conditions of a photoresist thickness of 9 μm and an etching rate of 0.26 μm / cycle, a regular rhombus pattern was prepared. The rhombus pattern was composed of multiple The bionic lotus leaf microstructure surface composed of rectangular ribs, and the gap between the plurality of rectangular ribs is 2 μm, the width of the plurality of rectangular ribs is 2 μm, and the lengths of the plurality of rectangular ribs are 2 μm, 4 μm, and 8 μm respectively and 12μm;

[0062] According to the molar ratio, fully stir and mix the dimethylamine and epichlorohydrin with a ratio of 1:1 to obtain the product A; according to the molar ratio of the product A and bromooctane as 1:3, continue to the product A Add bromooctane and ethanol, stir well, and reflux and condense overnigh...

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Abstract

The invention provides a preparation method of an antibacterial and bactericidal functional surface. The preparation method comprises the following steps: preparing a bionic lotus leaf micron structure surface; preparing a quaternary ammonium salt cationic polymer monomer; carrying out pretreatment on the surface of the bionic lotus leaf micron structure, then soaking the bionic lotus leaf micron structure in a coupling agent overnight, and grafting bromine active sites on the surface of a substrate; and continuously adding a solvent, the quaternary ammonium salt cationic polymer monomer, a catalyst, a free initiator and a ligand, and removing oxygen, so as to grow a layer of nano polymer brush structure on the surface of the bionic lotus leaf micron structure. The prepared antibacterial and bactericidal functional surface can endow the bionic lotus leaf micron structure surface with super-hydrophobic performance, and the bacterial drug resistance can be reduced; through the synergistic effect between the quaternary ammonium salt cationic polymer monomer and the bionic lotus leaf micron structure surface, the antibacterial and bactericidal functional surface has high sterilization effect and sterilization efficiency, and through the interaction of the component proportion and the process, the antibacterial and bactericidal functional surface has the advantages of being more environmentally friendly, low in preparation cost and efficient in antibacterial effect.

Description

technical field [0001] The invention relates to the field of preparation of functional materials, in particular to a method for preparing an antibacterial and sterilizing functional surface. Background technique [0002] The natural micro-nano structure provides a perfect biomimetic template for the construction of antibacterial functional surfaces, using its own low surface energy properties to reduce the initial adhesion of bacteria and microorganisms on the surface, or by weakening the force between the surface of the material and bacteria, making it The adhesion is not strong, which is easy to remove. Therefore, simulating the surface of natural biological microstructure, using artificial methods to prepare functional antibacterial materials to inhibit the initial adhesion of bacteria on the surface or kill bacteria, provides a safe and effective solution to prevent the harm of bacterial biofilms. However, the current surface used for simple anti-bacterial adhesion cann...

Claims

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Application Information

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IPC IPC(8): C08F120/34A01N37/12A01N25/34A01P1/00B82Y30/00B82Y40/00
CPCC08F120/34A01N37/12A01N25/34B82Y30/00B82Y40/00
Inventor 陈婷赵吉诗王子缘赵连玉蔡烁鸿谢开新叶天佑周福深
Owner FOSHAN UNIVERSITY
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