Method for constructing photocatalytic anti-bacterial and anti-fouling material with ring opening method

A photocatalytic and polymer technology, applied in the direction of antifouling/underwater coatings, polyether coatings, biocide-containing paints, etc., can solve the problem of compatibility, stability, dispersion and storage stability of nano-TiO2 photocatalytic antibacterial materials There are problems such as insufficient lifespan and not very extensive, to achieve the effect of obvious antibacterial effect on the surface and obvious antibacterial effect

Active Publication Date: 2017-05-17
安徽泽升科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of antibacterial, the application of photocatalytic antibacterial materials is not very extensive, mainly nano-TiO2, the compatibility of nano-TiO2 with various materials, the stable dispersion and storage stability of nano-TiO2 in materials, the photocatalytic antibacterial properties of nano-TiO2 The service life of the material is still insufficient. Nano-TiO2 photocatalytic materials are not widely used in actual industrial production, and further research is needed.

Method used

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  • Method for constructing photocatalytic anti-bacterial and anti-fouling material with ring opening method
  • Method for constructing photocatalytic anti-bacterial and anti-fouling material with ring opening method

Examples

Experimental program
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Effect test

example 1

[0027] Take 1 mmol of Acid Red 87 and completely dissolve it in 5 mL of N,N-dimethylformamide (DMF), then dissolve 1.5 mmol of 3-bromopropylamine hydrobromide in the solution, and wrap it in tin foil. React the system at 80°C for 7 hours, add 20 mL of ether and stir for 18 hours, then add 20 mL of deionized water and stir for 18 hours, and centrifuge to remove unreacted Acid Red 87, 3-bromopropylamine hydrobromide and most of the SolventDMF. After centrifugation, put it into a vacuum drying oven and dry it for 24 hours, and the product is a red powder. This powder is the desired product, denoted as EY-NH2.

example 2

[0029] Get 1mmol of the EY-NH obtained in Example 1 Dissolve in 10mL of DMSO, add 2mmol of polyethylene glycol diglycidyl ether (PEGDGE) and 1mmol of N, tert-butoxycarbonyl-1,2 ethylenediamine , and 1 mmol triethylamine was added, nitrogen gas was bubbled through for 5 min, and the system was reacted at 80° C. for 3 h under magnetic stirring. Then inject 2mLED with a syringe to completely open the ring of unreacted primary amino groups. At this time, the reaction solution was precipitated with ether and washed twice with ether, the supernatant was removed by centrifugation, and the ether was dried to obtain a yellow mucus. Dissolve with a small amount of pure water, and then dialyze with a 3500 dialysis bag for 2 days to remove ED, then take out the liquid in the dialysis bag and freeze-dry to obtain a red powder product, which is the product we need, recorded as EY-PEGDGE-ED-BOC .

[0030] The number average molecular weight (Mn) of the polymer (EY-PEGDGE-ED-BOC) was 14169,...

example 3

[0032] Dissolve 1 mmol of EY-PEGDGE-ED-BOC obtained in Example 2 in 10 mL of dichloromethane solution, add 2 mL of trifluoroacetic acid, react at room temperature for 12 hours, then remove the dichloromethane solution by rotary evaporation, precipitate with ether, sonicate, and centrifuge , so that the -BOC protecting group of EY-PEGDGE-ED-BOC is removed to obtain a water-soluble photocatalytic antibacterial and antifouling material, which is denoted as EY-PEGDGE-ED.

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Abstract

The invention provides a method for constructing a photocatalytic anti-bacterial and anti-fouling material with a ring opening method, belongs to the technical field of anti-bacterial and anti-fouling materials, and relates to a photocatalytic anti-bacterial and anti-fouling material constructed on the basis of an epoxy group and primary amino group ring opening polymerization process in the anti-bacterial and anti-fouling field, in particular to a method for preparing a photocatalytic antibacterial agent constructed on the basis of the ring opening method and an application of the photocatalytic antibacterial agent in the surface anti-bacterial field. The method is simple and feasible and easy to operate, and a synthetic polymer has higher anti-bacterial and anti-fouling efficiency.

Description

technical field [0001] The invention belongs to the technical field of antibacterial and antifouling materials, and in particular relates to the construction of a series of materials with photocatalytic antibacterial and antifouling effects with high-efficiency photocatalytic antibacterial and antifouling effects by an open-loop method. Background technique [0002] The use of antibacterial materials can be traced back a long time ago. The development of antibacterial materials plays a pivotal role in the development of human society and is widely used in people's production and life. Antibacterial agents include natural antibacterial agents, inorganic antibacterial agents, and organic antibacterial agents. Natural antibacterial agents come from some extracts in animals and plants, such as allicin, chitosan, propolis and so on. It is the first antibacterial agent used by humans. Among them, chitosan derived from shrimp shells and crab shells contains active groups in its m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/331C08G65/332C08G65/333C08G73/02C09D5/14C09D5/16C09D171/02
CPCC08G65/3318C08G65/3322C08G65/33344C08G73/02C09D5/14C09D5/1662C09D171/02
Inventor 徐福建俞丙然朱艺文
Owner 安徽泽升科技有限公司
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