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Preparation method of nano silver/micropore polymer composite liquid bactericide

A technology of microporous polymer and nano-silver, which is applied in the field of nanotechnology and fine chemical industry, can solve the problems of larger particle size, poor antibacterial effect, and less reaction interface, and achieve simple operation, long-lasting bactericidal effect, and monodispersity Good results

Inactive Publication Date: 2019-08-20
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small specific surface area of ​​silver metal in the macroscopic size, there are few reaction interfaces and few silver ions released, resulting in weak activity and poor antibacterial effect
Although ordinary nano-silver particles have high activity, they are prone to agglomeration, resulting in larger particle size, which in turn reduces activity. Therefore, general nano-silver sterilizing solutions need to add chemical stabilizers that stabilize nano-silver. These chemical stabilizers Harmful to human body and environment

Method used

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  • Preparation method of nano silver/micropore polymer composite liquid bactericide
  • Preparation method of nano silver/micropore polymer composite liquid bactericide
  • Preparation method of nano silver/micropore polymer composite liquid bactericide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of nano-silver / microporous polymer composite bactericidal liquid, with 500 milliliters of this nano-silver / microporous polymer composite bactericidal liquid, the size of nano-silver particles in the nano-silver / microporous polymer composite bactericidal liquid is between 1 ~ 5nm Between, prepare according to the following preparation steps:

[0033] See the table below for raw materials and proportions:

[0034]

[0035] Preparation method: Add 2.0nl of mannitol and 0.5g of fine powder of triynylphenyl conjugated microporous polymer after grinding into 300ml of purified water, stir and dissolve, add 0.5g of silver nitrate (calculated as silver), and add purified water to 400 ml; raise the temperature, and leave to react in a sealed container at 50°C for 5 hours; after the completion of the reaction, stir slowly and add purified water to 500 ml to obtain the target nano-silver / microporous polymer composite sterilizing solution. figure 1 It is a high-resolution...

Embodiment 2

[0039] Based on 500 milliliters of this nano-silver / microporous polymer composite sterilizing solution, the raw materials and proportioning ratio are shown in the following table:

[0040]

[0041]Preparation method: add 3.0 ml of glucitol and 0.8 g of finely ground diacetylenylphenyl conjugated microporous polymer powder into 300 ml of purified water, stir to dissolve, add 0.5 g of silver acetate (calculated as silver), and add purified water to 400 ml; raise the temperature, and leave to react at 60°C for 6 hours; after the reaction is completed, stir slowly and add purified water to 500 ml to obtain the target nano-silver / microporous polymer composite sterilizing solution.

[0042] Bactericidal performance test: According to the 2002 edition of "Disinfection Technical Specifications", the bactericidal performance test is carried out. The test results show that the killing rate of the above-mentioned nano-silver / peroxide composite sterilizing solution on Escherichia coli ...

Embodiment 3

[0044] Based on 500 milliliters of this nano-silver / microporous polymer composite sterilizing solution, the raw materials and proportioning ratio are shown in the following table:

[0045]

[0046] Preparation method: Add 2.0ml of glucitol and 0.6g of finely ground diacetylenylphenyl conjugated microporous polymer powder into 300ml of purified water, stir to dissolve, add 0.4g of silver acetate (calculated as silver), and add purified Water to 400 ml; raise the temperature, and keep it closed for 5 hours at 60°C; after the reaction is completed, stir slowly and add purified water to 500 ml to obtain the target nano-silver / microporous polymer composite sterilizing solution.

[0047] Bactericidal performance test: According to the 2002 edition of "Disinfection Technical Specifications", the bactericidal performance test is carried out. The test results show that the killing rate of the above-mentioned nano-silver / peroxide composite sterilizing solution on Escherichia coli (ty...

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Abstract

The invention discloses a preparation method of a nano silver / micropore polymer composite liquid bactericide. A certain amount of a nano silver ion solution and a micropore polymer material are mixedand evenly stirred to obtain the target product namely the nano silver / micropore polymer composite liquid bactericide. The prepared nano silver / micropore polymer composite liquid bactericide has the characteristics of well dispersed silver particles, agglomeration resistance, and high activity in the absence of a stabilizing agent. Furthermore, the activity of nano silver can last a long term, theliquid bactericide has the characteristic of long bactericidal effect, moreover, the operation of the preparation method is convenient, the preparation time is short, the technology is easy to control, and the preparation method is suitable for large scale production.

Description

technical field [0001] The invention relates to a method for preparing a nano-silver / microporous polymer composite sterilizing solution, which belongs to the field of nanotechnology and fine chemical industry. Background technique [0002] With the development of nanomaterial preparation technology, people gradually realize that silver has super bactericidal properties in nanometer state. Nano-silver is non-toxic, has no drug resistance, and has a wide range of bactericidal effects; moreover, nano-silver has good biocompatibility, can promote wound healing, cell growth and repair, and has no irritation to the skin. Therefore, nano-silver antibacterial materials are currently widely used in functional coatings, textile fibers, food, daily chemicals, medical care and other fields. The market prospect is very broad, and it has gradually become a hot spot in industrial research. [0003] The bactericidal effect of nano silver mainly depends on the following two ways: [0004] ...

Claims

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Application Information

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IPC IPC(8): A01N25/10A01N59/16A01P1/00A61K33/38A61K47/30A61K47/69A61P31/02A61P31/04
CPCA01N25/10A01N59/16A61K33/38A61K47/30A61K47/6921A61P31/02A61P31/04
Inventor 何丹农陈振林琳王敬锋徐少洪金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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