Nano-silver deposited medical antibacterial polycarbonate material and preparation method thereof

A polycarbonate, medical technology, applied in the field of materials, can solve the problems of poor physical and mechanical properties, antibacterial performance, etc., to achieve good toughness, antibacterial performance, and superior comprehensive performance

Active Publication Date: 2017-11-07
安徽洁羱医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of antibacterial polycarbonate material for nano-silver deposition medical use and its preparation method in view of the physical and mechanical properties and poor antibacterial performance of conventional aliphatic polycarbonate existing in the prior art

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] A kind of antibacterial polycarbonate material for nanometer silver deposition medical treatment, it is made up of the raw material of following weight part:

[0022] Chitosan 3, acrylonitrile 41, initiator solution 100, polytrimethylene carbonate 200, polyvinylpyrrolidone 47, bisphthalonitrile 0.04, potassium sorbate 1.

[0023] A nano-silver deposition medical antibacterial polycarbonate material, the initiator solution is 2g / l ammonium persulfate aqueous solution.

[0024] A preparation method of nano-silver deposition medical antibacterial polycarbonate material, comprising the following steps:

[0025] (1) Take potassium sorbate, add it to deionized water 60 times its weight, and stir to dissolve;

[0026] (2) Take chitosan, add it to 47 times its weight in absolute ethanol, raise the temperature to 50°C, add diphthalonitrile, ultrasonicate for 20 minutes, distill off ethanol, dry at room temperature, and mix with acrylonitrile , added to the above potassium sorb...

Embodiment 2

[0033] A kind of antibacterial polycarbonate material for nanometer silver deposition medical treatment, it is made up of the raw material of following weight part:

[0034] Chitosan 4, acrylonitrile 50, initiator solution 120, polytrimethylene carbonate 270, polyvinylpyrrolidone 50, bisphthalonitrile 0.04, potassium sorbate 2.

[0035] A nano-silver deposition medical antibacterial polycarbonate material, the initiator solution is 3g / l ammonium persulfate aqueous solution.

[0036] A preparation method of nano-silver deposition medical antibacterial polycarbonate material, comprising the following steps:

[0037] (1) Take potassium sorbate, add it to deionized water 70 times its weight, and stir to dissolve;

[0038] (2) Take chitosan, add it to 50 times its weight in absolute ethanol, increase the temperature to 55°C, add diphthalonitrile, ultrasonicate for 30 minutes, distill off ethanol, dry at room temperature, and mix with acrylonitrile , added to the above potassium s...

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Abstract

The invention discloses a nano-silver deposited medical antibacterial polycarbonate material and a preparation method thereof. Firstly, amino groups on the surface of chitosan and bisphthalonitrile are subjected to a crosslinking reaction, an obtained amino-nitrile compound participates in an acrylonitrile polymerization reaction in the presence of an initiator, an antibacterial crosslinked polymer is obtained, antibacterial fiber is obtained through spinning and treated with hydrogen peroxide, hydroxylated antibacterial fiber is obtained, hydroxy of polytrimethylene carbonate is activated through glycol and is subjected with a condensation reaction with hydroxy on the surface of the antibacterial fiber, a silver nitrate water solution is added in the condensation reaction process, a reduction reaction is performed through polyvinylpyrrolidone, obtained nano-silver is deposited on the surface of the polymer through a condensation reaction, and the polycarbonate material is obtained.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a nano-silver deposition medical antibacterial polycarbonate material and a preparation method thereof. Background technique [0002] Polycarbonate refers to a polymer material whose main chain contains carbonate bonds. According to the main chain chemical structure of polycarbonate, it can be divided into two categories: aromatic polycarbonate and aliphatic polycarbonate. Aromatic polycarbonate containing bisphenol A is the earliest polycarbonate used as a biomedical material, mainly for artificial kidneys and skulls, but because it cannot be biodegraded, it can only be used as a permanent substitute in the body. The synthesis method of aromatic polycarbonate of phenol A is mainly phosgene condensation method. In contrast, the synthesis of aliphatic polycarbonate can not only avoid the use of highly toxic phosgene, but also gradually degrade into small molecular compounds ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L33/20C08L5/08C08K3/08D01F6/54D01F1/10C08F120/44C08G64/42
CPCC08F120/44C08G64/42C08K2003/0806C08K2201/011C08L69/00C08L2203/02C08L2205/03C08L2205/16D01F1/103D01F6/54C08L33/20C08L5/08C08K3/08
Inventor 汪梅花
Owner 安徽洁羱医疗器械有限公司
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