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Preparation method and application of antibiosis composite emulsion containing nano silver particles

A technology of nano-silver particles and composite emulsions, applied in the direction of botany equipment and methods, applications, chemicals for biological control, etc., to achieve excellent antibacterial properties, convenient operation, and improved reaction accuracy

Active Publication Date: 2013-06-26
JIAXING NIYA OPTOELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] About using fatty alcohol polyoxyethylene ether as surfactant, synthesize nano-silver particles by inverse microemulsion, and then prepare composite antibacterial emulsion containing nano-silver particles by microemulsion polymerization, there is no report yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: the preparation of the antibacterial compound emulsion that comprises nano-silver particle

[0030] The volume ratio of methyl methacrylate to isooctyl polyoxyethylene ether is 20 / 1, the volume ratio of water to isooctyl polyoxyethylene ether is 0.95 / 1, and the molar volume ratio of silver nitrate to water is 0.13mol / L The ratio of microemulsion A was prepared in an ultrasonic water bath (ultrasonic frequency 100Hz, temperature 40°C);

[0031] According to the volume ratio of methyl methacrylate to isooctyl polyoxyethylene ether 20 / 1, the volume ratio of water to isooctyl polyoxyethylene ether is 0.95 / 1, and the molar volume ratio of hydrazine hydrate to water is 0.3mol / L, The mass percentage of ammonia and water is 25wt%, and the microemulsion B is prepared in an ultrasonic water bath (ultrasonic frequency 100Hz, temperature 40°C);

[0032] Take equal volumes of the above-mentioned microemulsion A and microemulsion B respectively, and add microemulsion...

Embodiment 2

[0039] Embodiment 2: the preparation of the antibacterial compound emulsion that comprises nano-silver particle

[0040] The volume ratio of methyl methacrylate to isooctyl polyoxyethylene ether is 25 / 1, the volume ratio of water to isooctyl polyoxyethylene ether is 0.9 / 1, and the molar volume ratio of silver nitrate to water is 0.17mol / L The ratio of microemulsion A prepared in an ultrasonic water bath (ultrasonic frequency 100Hz, temperature 40°C).

[0041] According to the volume ratio of methyl methacrylate to isooctyl polyoxyethylene ether 25 / 1, the volume ratio of water to isooctyl polyoxyethylene ether is 0.9 / 1, and the molar volume ratio of hydrazine hydrate to water is 0.35mol / L, The mass percentage of ammonia and water is 27wt%, microemulsion B prepared in an ultrasonic water bath (ultrasonic frequency 100Hz, temperature 40°C).

[0042] Take equal volumes of the above-mentioned microemulsion A and microemulsion B respectively, and add microemulsion B dropwise to m...

Embodiment 3

[0045] Embodiment 3: the preparation of the antibacterial compound emulsion that comprises nano-silver particle

[0046] The volume ratio of methyl methacrylate to isooctyl polyoxyethylene ether is 30 / 1, the volume ratio of water to isooctyl polyoxyethylene ether is 0.85 / 1, and the molar volume ratio of silver nitrate to water is 0.22mol / L The ratio of microemulsion A prepared in an ultrasonic water bath (ultrasonic frequency 100Hz, temperature 40°C).

[0047] According to the volume ratio of methyl methacrylate to isooctyl polyoxyethylene ether 30 / 1, the volume ratio of water to isooctyl polyoxyethylene ether is 0.85 / 1, and the molar volume ratio of hydrazine hydrate to water is 0.38mol / L, The mass percentage of ammonia and water is 30wt%, and the microemulsion B is prepared in an ultrasonic water bath (ultrasonic frequency 100Hz, temperature 40°C).

[0048] Take equal volumes of the above-mentioned microemulsion A and microemulsion B respectively, and add microemulsion B ...

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Abstract

The invention discloses a preparation method and an application of an antibiosis composite emulsion containing nano silver particles and belongs to the field of nano composite materials. The method comprises the following steps of: adopting water-soluble silver salt as a precursor, hydrazine hydrate as a reducing agent and ammonia water as a pH value adjusting agent; adopting fatty alcohol-polyoxyethylene ether as a surfactant, acrylic ester as a continuous phase, and respectively adopting a silver salt water solution and a hydrazine hydrate ammonia water solution as dispersion phases to prepare a microemulsion A and a microemulsion B; mixing the microemulsion A and the microemulsion B so as to form a microemulsion C, and carrying out reduction reaction of the silver salt and the hydrazine hydrate in the microemulsion C so as to synthesize the nano silver particles; and finally polymerizing the microemulsion of the acrylic ester so as to obtain the composite emulsion containing the nano silver particles. The composite emulsion containing the nano silver particles has good antibiosis and bactericidal performance, and the antibacterial rates to escherichia coli and staphylococcus aureus are respectively 95.5% and greater than 95.5%.

Description

technical field [0001] The invention belongs to the field of nano-composite materials, and in particular relates to the synthesis of nano-silver particles and the preparation method and application of an antibacterial composite emulsion containing nano-Ag particles. Background technique [0002] Due to the quantum effect, small size effect and large specific surface area, nano-silver has good antibacterial and bactericidal effects and broad-spectrum antibacterial activity, and is a new generation of antibacterial materials with great development prospects. At present, the chemical method is one of the main preparation methods of nano-silver, but the nano-silver antibacterial agent prepared by the traditional chemical method has problems such as easy agglomeration and oxidation, which leads to a decrease in the antibacterial activity of the antibacterial agent. Therefore, the key problem to solve the antibacterial activity of nano-silver antibacterial agents is how to improve...

Claims

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Application Information

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IPC IPC(8): C08F120/14C08F120/18C08F2/44C08F2/30C08K3/08B22F9/24A01N59/16A01N25/04A01P1/00
Inventor 吴礼光陈甜甜祝方琦朱妮楠孙志轩
Owner JIAXING NIYA OPTOELECTRONICS CO LTD
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