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Polymer/ montorillonite clay- soy bean lecithin-sulfadiazine silver nano antibacterial composite material and its preparation method

A technology of soybean lecithin and silver sulfadiazine, which is applied in the directions of botanical equipment and methods, chemicals for biological control, animal repellants, etc., can solve the problems of unstable clinical effect, complicated production process and short anti-infection time. and other problems, to achieve the effect of prolonging antibacterial performance, good sustained release performance and improving mechanical properties

Inactive Publication Date: 2007-05-30
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the antibacterial research on catheter materials mainly focuses on the application of various antibiotic coatings and silver-plated catheters—that is, depositing a layer of silver alloy on the surface of catheters, but the former has a short anti-infection time and unstable clinical effects; the latter has complex production processes and higher cost

Method used

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  • Polymer/ montorillonite clay- soy bean lecithin-sulfadiazine silver nano antibacterial composite material and its preparation method
  • Polymer/ montorillonite clay- soy bean lecithin-sulfadiazine silver nano antibacterial composite material and its preparation method
  • Polymer/ montorillonite clay- soy bean lecithin-sulfadiazine silver nano antibacterial composite material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 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 functional antibacterial intercalation agent soybean lecithin-silver sulfadiazine complex to the dispersed montmorillonite at 20-90 °C In the soil-removing colloidal solution, react at 20-90°C for 1 hour to obtain a flocculent precipitate; filter the precipitate and wash it with distilled water; vacuum-dry it at 60°C for 24 hours, and the obtained solid is pulverized into a functional montmorillonite-soybean Lecithin-silver sulfadiazine antibacterial complex;

[0053] Disperse 0.1 part of the above-mentioned functional montmorillonite-soybean lecithin-silver sulfadiazine antibacterial compound in 100 parts of toluene at 20-60 °C, add it to 100 parts of room temperature vulcanized silicone rubber, and disperse it ultrasonically for 0.5 min to make it fully Mix, add 1 part of tetraethyl orthosilicate, 0.1 part of dibutyltin dilaurate, apply on...

Embodiment 2

[0055] Dissolve 10 parts of montmorillonite in 500 mL of ethanol solution, stir and disperse at high speed for 2 hours, and add 20 parts of functional antibacterial intercalation agent soybean lecithin-silver sulfadiazine complex at 20-90°C The montmorillonite colloidal solution was reacted at 20-90°C for 0.5h to obtain a flocculent precipitate; the precipitate was filtered and washed with distilled water; vacuum-dried at 60°C for 24h, and the obtained solid was pulverized into a functional montmorillonite Soil-soybean lecithin-silver sulfadiazine antibacterial complex;

[0056] Disperse 10 parts of the above-mentioned functional montmorillonite-soybean lecithin-silver sulfadiazine antibacterial compound in 200 parts of ethanol at 20-60°C, add it to 100 parts of room temperature vulcanized silicone rubber, disperse it ultrasonically for 10 minutes, and make it fully mixed , add 10 parts of tetraethyl orthosilicate, 1 part of dibutyltin dilaurate, apply on the mold, and leave i...

Embodiment 3

[0058] Dissolve 2 parts of montmorillonite in 10 mL of aqueous solution, stir and disperse at high speed for 0.5 h, and add 1 part of the functional antibacterial intercalation agent soybean lecithin-silver sulfadiazine complex to the dispersed treated In the colloidal solution of montmorillonite, react at 20-90°C for 1 hour to obtain a flocculent precipitate; filter the precipitate and wash it with distilled water; dry it in vacuum at 60°C for 24 hours, and the obtained solid is pulverized into a functional montmorillonite- Soy lecithin-silver sulfadiazine antibacterial complex;

[0059] Disperse 3 parts of the above-mentioned functional montmorillonite-soybean lecithin-silver sulfadiazine antibacterial compound in 100 parts of xylene at 20-60 ° C, add 100 parts of room temperature vulcanized silicone rubber, and ultrasonically disperse for 2 minutes to make it fully Mix, add 2 parts of ethyl orthosilicate, 2 parts of dibutyltin dilaurate, apply on the mold, and leave it at 2...

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Abstract

The invention discloses a nanometer antibiotic composite material of polymer / montmorillonite-soya bean lecithin-silvadene, which comprises the following parts: 100g polymer, 0.1-10g montmorillonite-soya bean lecithin-silvadene composition, 0-400g dispersing dielectric, 0-10g crosslinking agent and 0-1g accelerant, wherein the polymer is composed of raw rubber of silicon rubber, polyurethane or two copolymer or polyolefin material; the raw rubber of silicon rubber is selected from indoor-temperature silicon rubber, high-temperature silicon rubber, addition-typed silicon rubber; the polyolefin material can be PE, PVC, PP. The invention improves stretching strength by 370%, which increases fracture extending rate by 480%.

Description

technical field [0001] The invention provides a polymer / montmorillonite-soybean lecithin-silver sulfadiazine antibacterial composite material and a preparation method thereof, in particular to a functional intercalation agent soybean lecithin-silver sulfadiazine compound and the use of such functional A type of polymer / montmorillonite-soybean lecithin-sulfadiazine silver nano antibacterial composite material formed by filling montmorillonite modified by a type intercalation agent into a polymer matrix and a preparation method thereof. Background technique [0002] Biomedical catheter materials have broad market prospects and high profits. Statistics show that the annual sales of various biomedical catheter materials in the world have reached 3 billion US dollars. Biomedical catheter materials must have corresponding biological functions, thermodynamic properties, biocompatibility and safety. With the development of society and economy, people's living standards continue to...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L75/04C08L23/00C08K5/57A01N43/58A01P1/00B29C35/02C08K3/34C08K5/435C08K5/521
Inventor 周宁琳刘颖孟娜沈健李利魏少华章峻
Owner NANJING NORMAL UNIVERSITY
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