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A kind of nanometer magnesium oxide triclosan composite nanometer antibacterial agent

A technology of nano-magnesium oxide and nano-antibacterial agent, which is applied in the field of antibacterial agents, can solve the problems such as the undeveloped nano-magnesia functional powder preparation process, and achieve the effects of easy industrial production, simple preparation process, and rapid sterilization ability

Active Publication Date: 2015-11-18
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] From the above-mentioned development of nano-magnesia preparation technology for sterilization and disinfection, so far, the main focus of preparation technology is still limited to the control of particle size, and the development of nano-magnesia functional powder suitable for sterilization applications has not been developed from the adjustment of particle surface properties. body preparation process

Method used

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  • A kind of nanometer magnesium oxide triclosan composite nanometer antibacterial agent
  • A kind of nanometer magnesium oxide triclosan composite nanometer antibacterial agent
  • A kind of nanometer magnesium oxide triclosan composite nanometer antibacterial agent

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Effect test

Embodiment 1

[0048] according to + / Mg 2+ (mol / mol)=0.01 ratio, directly mix 20ml of ethanol solution of lithium salt with 500ml of 0.5mol magnesium nitrate ethanol solution, and stir evenly at room temperature; after that, directly add 500ml of ethanol solution containing equimolar oxalic acid In the magnesium ethanol solution, after continuous stirring for 30 minutes, the precursor gel was obtained after standing at room temperature for 8 hours; the gel was filtered, washed with ethanol for 3 to 5 times, and dried at 80° C. for 48 hours to obtain the xerogel of the magnesium oxide precursor. Finally, the obtained xerogel was sintered at a high temperature of 500°C for 1 hour to obtain lithium ion-doped nano-magnesia powder LM-1; 0.5 g of lithium-doped nano-magnesia powder was weighed and added to 120 ppm triclosan ethanol solution , stirred at room temperature for 12h. After that, centrifuge, wash with ethanol for 2-3 times, and dry at 80°C to obtain the composite antibacterial agent L...

Embodiment 2

[0050] According to Li + / Mg 2+ (mol / mol)=0.05 ratio, directly mix 20ml of ethanol solution of lithium salt with 500ml of 0.3mol magnesium nitrate ethanol solution, and stir evenly at room temperature; after that, directly add 500ml of ethanol solution containing equimolar oxalic acid In the magnesium ethanol solution, after continuous stirring for 30 minutes, the precursor gel was obtained after standing at room temperature for 24 hours; the gel was filtered and washed with ethanol for 3 to 5 times, and dried at 120° C. for 12 hours to obtain the xerogel of the magnesium oxide precursor. Finally, the obtained dry gel was sintered at a high temperature of 500° C. for 5 hours to obtain lithium ion-doped nano magnesium oxide powder LM-2. The prepared 0.1 g of lithium-doped nano magnesium oxide was weighed, added to 80 ppm triclosan ethanol solution, and stirred at room temperature for 5 h. After that, centrifuge, wash with ethanol for 2-3 times, and dry at 80°C to obtain the c...

Embodiment 3

[0052] According to Li + / Mg 2+ (mol / mol)=0.02 ratio, directly mix 20ml of ethanol solution of lithium salt with 500ml of 0.2mol magnesium nitrate ethanol solution, and stir evenly at room temperature; after that, directly add 500ml of ethanol solution containing equimolar oxalic acid In the magnesium ethanol solution, after continuous stirring for 30 minutes, the precursor gel was obtained after standing at room temperature for 12 hours; the gel was filtered, washed with ethanol for 3 to 5 times, and dried at 100° C. for 24 hours to obtain the xerogel of the magnesium oxide precursor. Finally, the obtained dry gel was sintered at a high temperature of 500° C. for 2 hours to obtain lithium ion-doped nano magnesium oxide powder LM-3. Weigh the prepared 0.3g of lithium-doped nano magnesium oxide, add it into the 100ppm triclosan ethanol solution, and stir at room temperature for 8h. After that, centrifuge, wash with ethanol for 2-3 times, and dry at 80°C to obtain the composit...

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Abstract

The invention relates to nanometer magnesia and a preparation method thereof, and a nanometer magnesia-triclosan composite antimicrobial agent as well as a preparation method and an application thereof. The defect structure of nanometer magnesia and the triclosan adsorption capability are regulated through ion doping, and the antimicrobial capability of the composite antimicrobial agent is regulated, so that the agent has good antimicrobial performance and anti-mold property, and is simple to operate in a production process, high in yield and suitable for mass production.

Description

technical field [0001] The invention relates to the technical field of antibacterial agents, in particular to a nano-magnesia-triclosan composite antibacterial agent, its preparation method and application. Background technique [0002] Antibacterial materials and products still play an irreplaceable role in reducing the spread of diseases and responding to public health emergencies. From the perspective of the application performance of antibacterial materials, organic antibacterial agents (including aromatic aldehydes, chlorophenols, quaternary ammonium salts and imidazoles, etc.) have certain toxicity and volatility, and are easy to cause irritation or corrosion to the human body, and their outstanding The problem is that the temperature resistance is poor, and the application range is greatly limited. In contrast, inorganic antibacterial agents (such as silver-based, zinc-based and titanium dioxide-based antibacterial agents) have higher whiteness, better heat resistanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F5/04C08K9/12C08K5/136C08L23/12A01N59/06A01N59/20A01N59/16A01N31/16A01P1/00A01P3/00
Inventor 陈运法武晓峰张婧坤
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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