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Polymer/ montorillonite clay- organosilicon antibacterial agent -sulfadiazine silver nano antibacterial composite material and its preparation method

A technology of silver sulfadiazine and composite materials, which is applied in the fields of botanical equipment and methods, animal repellents, plant growth regulators, etc. The polymer/antibacterial agent complex has problems such as short antibacterial time and influence on the mechanical properties of the polymer matrix, so as to achieve the effect of prolonging the antibacterial properties, improving the mechanical properties and slowing down the release rate.

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

[0007] The composite antibacterial agent is directly blended with the polymer or adopts surface coating, surface grafting and other methods, and there are the following problems: the composite antibacterial agent is unevenly dispersed in the polymer matrix and is easy to be lost; the surface modification process is complicated, The modified surface has poor stability; and the polymer / antibacterial agent composite prepared by the above method has a short antibacterial time, and even has an impact on the mechanical properties of the polymer matrix; it cannot simultaneously achieve amazing results in terms of antibacterial effect, mechanical properties and biocompatibility. degree of satisfaction

Method used

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  • Polymer/ montorillonite clay- organosilicon antibacterial agent -sulfadiazine silver nano antibacterial composite material and its preparation method
  • Polymer/ montorillonite clay- organosilicon antibacterial agent -sulfadiazine silver nano antibacterial composite material and its preparation method
  • Polymer/ montorillonite clay- organosilicon antibacterial agent -sulfadiazine silver nano antibacterial composite material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Dissolve 0.1 part of montmorillonite in 20mL aqueous solution, stir and disperse at a high speed for 20min, and mix the functional composite antibacterial intercalation agent, organosilicon antibacterial agent, triethoxysilylpropyldimethylhexadecylammonium chloride-sulfonamide Add 0.3 parts of pyrimidine-silver complex to the dispersed montmorillonite colloidal solution at 20-90°C, react at 20-90°C for 1 hour to obtain a flocculent precipitate; filter the precipitate and wash with distilled water; 60°C Dry under vacuum for 24 hours, and the resulting solid is pulverized into a functional montmorillonite-organosilicon antibacterial agent-silver sulfadiazine antibacterial compound

[0046] Disperse 0.1 part of the above-mentioned functional montmorillonite-organosilicon antibacterial agent-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...

Embodiment 2

[0048] Dissolve 10 parts of montmorillonite in 500mL aqueous solution, stir and disperse at high speed for 2 hours, and mix the functional compound antibacterial intercalation agent organosilicon antibacterial agent trimethoxysilylpropylmethylethylhexadecylammonium bromide-sulfonamide Add 20 parts of pyrimidine-silver complex into the dispersed montmorillonite colloidal solution at 20-90°C, react at 20-90°C for 0.5h, and obtain a flocculent precipitate; filter the precipitate and wash with distilled water; 60 Vacuum dry at ℃ for 24 hours, and the obtained solid is crushed into a functional montmorillonite-organosilicon antibacterial agent-silver sulfadiazine antibacterial compound

[0049] Disperse 10 parts of the above-mentioned functional montmorillonite-organic silicon antibacterial agent-silver sulfadiazine antibacterial compound in 200 parts of xylene at 20-60 ° C, add 100 parts of room temperature vulcanized silicone rubber, and disperse it ultrasonically for 10 minutes t...

Embodiment 3

[0051] Dissolve 2 parts of montmorillonite in 10mL ethanol solution, stir and disperse at high speed for 0.5h, and mix functional compound antibacterial intercalation agent organosilicon antibacterial agent triethoxysilylmethyl dimethyl octadecyl ammonium chloride - Add 1 part of silver sulfadiazine complex to the dispersed montmorillonite colloidal solution at 20-90°C, react at 20-90°C for 1 hour to obtain a flocculent precipitate; filter the precipitate and wash with distilled water; Vacuum dry at 60°C for 24 hours, and the resulting solid is pulverized into a functional montmorillonite-organosilicon antibacterial agent-silver sulfadiazine antibacterial compound

[0052] Disperse 3 parts of the above-mentioned functional montmorillonite-organosilicon antibacterial agent-silver sulfadiazine antibacterial compound in 100 parts of n-hexane at 20-60 °C, add 100 parts of room temperature vulcanized silicone rubber, and disperse ultrasonically for 2 minutes to make it Mix well, ad...

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PUM

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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 ion exchange content of montmorillonite is 70-120mmol / 100g.

Description

technical field [0001] The invention provides a polymer / montmorillonite-organosilicon antibacterial agent-sulfadiazine silver nano-antibacterial composite material and a preparation method thereof, in particular to a functional intercalation agent organosilicon antibacterial agent-sulfadiazine silver compound and the use of this A type of polymer / montmorillonite-organosilicon antibacterial agent-sulfadiazine silver nanometer antibacterial composite material formed by filling montmorillonite modified by a similar functional 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 developme...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L75/04C08L23/00C08K5/057A01N43/58A01P1/00B29C35/02C08K3/34C08K5/14C08K5/435
Inventor 周宁琳陈亚红沈健李利魏少华章峻
Owner NANJING NORMAL UNIVERSITY
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