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Polymer/montmorillonite-gallicin nano-antibacterial composite material and its preparation method

A technology of composite materials and montmorillonite, which is applied in the field of polymer/montmorillonite-garlicin nano-antibacterial composite materials and its preparation, can solve the problems of poor heat resistance of allicin, instability of allicin, loss of function when decomposed, etc. To achieve the effect of less drug resistance, safe food source, and improved mechanical properties

Inactive Publication Date: 2008-08-27
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Allicin is directly blended with polymers, and there are the following problems: allicin is very unstable, and under certain conditions, it is easy to decompose to produce a variety of allyl sulfides, and produce garlic odor; allicin has poor heat resistance, When heated (above 75°C), it decomposes and loses its effect
Allicin has the disadvantages of uneven dispersion and easy loss in the polymer matrix, and the polymer / allicin complex prepared by direct blending has a short antibacterial effect

Method used

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  • Polymer/montmorillonite-gallicin nano-antibacterial composite material and its preparation method
  • Polymer/montmorillonite-gallicin nano-antibacterial composite material and its preparation method
  • Polymer/montmorillonite-gallicin nano-antibacterial composite material and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Dissolve 0.1 part of montmorillonite in 20 mL of aqueous solution, stir and disperse at high speed for 20 minutes, add 0.3 part of antibacterial allicin into the dispersed montmorillonite colloid solution at 20-75 °C, React at low temperature for 1 hour to obtain a flocculent precipitate; filter and wash the precipitate; vacuum-dry at 60°C for 24 hours, and the resulting solid is crushed to form a functional montmorillonite-allicin antibacterial complex

[0054] Disperse 0.1 part of the above-mentioned functional montmorillonite-allicin antibacterial compound in 100 parts of toluene at 20-60 °C, add it into 100 parts of room temperature vulcanized silicone rubber, disperse it ultrasonically for 0.5 min, make it fully mixed, add orthosilicone 1 part of ethyl acetate, 0.1 part of dibutyltin dilaurate, and 0.5 part of dibutyltin dilaurate are coated on the mold, and placed at 20-60° C. for at least 0.2-24 hours to obtain the polymer / montmorillonite-garlicin nanometer antiba...

Embodiment 2

[0056] Dissolve 10 parts of montmorillonite in 500 mL of ethanol solution, stir and disperse at high speed for 2 hours, add 20 parts of antibacterial allicin into the dispersed montmorillonite colloid solution at 20-75 °C, React at ℃ for 0.5h to obtain a flocculent precipitate; filter and wash the precipitate; vacuum dry at 60℃ for 24h, and the obtained solid is crushed to become a functional montmorillonite-allicin antibacterial complex

[0057] Disperse 10 parts of the above-mentioned functional montmorillonite-garlicin antibacterial compound in 200 parts of toluene at 20-60 ° C, add 100 parts of room temperature vulcanized silicone rubber, disperse by ultrasonic for 10 minutes, make it fully mixed, add orthosilicic acid 10 parts of ethyl ester and 1 part of dibutyltin dilaurate are coated on the mould, and placed at 20-60° C. for at least 0.2-24 hours to obtain the polymer / montmorillonite-garlicin nanometer antibacterial composite material.

Embodiment 3

[0059] Dissolve 2 parts of montmorillonite in 10mL of aqueous solution, stir and disperse at high speed for 0.5h, add 1 part of antibacterial allicin at 20-75°C to the dispersed montmorillonite colloidal solution, React at ℃ for 1 hour to obtain a flocculent precipitate; filter and wash the precipitate; vacuum dry at 60℃ for 24 hours, and the obtained solid is crushed to form a functional montmorillonite-garlicin antibacterial complex

[0060] Disperse 3 parts of the above-mentioned functional montmorillonite-garlicin antibacterial compound in 100 parts of xylene at 20-60 °C, add it into 100 parts of room temperature vulcanized silicone rubber, disperse it ultrasonically for 2 minutes, make it fully mixed, add orthosilicone 2 parts of ethyl acetate and 2 parts of dibutyltin dilaurate are coated on the mould, and placed at 20-60° C. for at least 0.2-24 hours to obtain the polymer / montmorillonite-garlicin nanometer antibacterial composite material.

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Abstract

This invention is a polymer / montmorillonite-garlicin nanometer antibiosis composite. Its raw materials and weight amount is that polymer 100, montmorillonite-garlicin 0.1-10, disperse medium 0-400, cross linking agent, accelerator 0-1. The polymer is composed by silicone rubber gum which is chosen from methylsilicone, pyro-methylsilicone and additive type methylsilicone, polyurethane which is chosen from PE, PVC and PP, or the polymer of two compounds. The functional intercalator of montmorillonite-garlicin is garlicin. The invention slows down the release of garlicin, so it can extend its antibiosis function outstandingly with its good slow-release nature. Except the preparation of high performance montmorillonite-garlicin materials, it can also boost the mechanic function, heat resistance, mediator resistance of the polymer basal body.

Description

technical field [0001] The invention provides a polymer / montmorillonite-garlicin nano antibacterial composite material and a preparation method thereof, in particular to a polymer / montmorillonite compound formed by filling allicin intercalated modified montmorillonite into a polymer matrix. Soil removal-garlicin nano antibacterial composite material and its preparation method. Background technique [0002] Garlic contains unique allicin, which can kill and inhibit various bacteria, fungi, and viruses. It is called "natural broad-spectrum plant fungicide", and allicin has no residue and is not easy to produce drug resistance , non-mutagenic, teratogenic, carcinogenic, low cost, wide range of sources and safe to eat, has broad application prospects in human health care and medical treatment. [0003] Allicin (Alliiridum) is the general term for the main bioactive components in garlic extract. The chemical composition of allicin is composed of more than 20 kinds of volatile s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08L83/04C08L23/00C08K9/04A01N41/08C08K5/57C08K5/54C08K5/42
Inventor 周宁琳沈健李利章峻魏少华
Owner NANJING NORMAL UNIVERSITY
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