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A kind of antibacterial polycarbonate and its preparation method and application

A polycarbonate, antibacterial technology, applied in the field of antibacterial polycarbonate and its preparation, can solve the problem that the heat resistance of ordinary organic antibacterial agents cannot be applied to antibacterial PC, etc., to avoid antibacterial failure, reduce use, and improve bending strength increased effect

Active Publication Date: 2022-03-29
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the potential hazards when using inorganic antibacterial agents for antibacterial polycarbonate (PC), and the problem that common organic antibacterial agents cannot be used in antibacterial PC due to their heat resistance problems, the primary purpose of the present invention is to provide an antibacterial antibacterial agent. Preparation method of polycarbonate

Method used

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  • A kind of antibacterial polycarbonate and its preparation method and application
  • A kind of antibacterial polycarbonate and its preparation method and application
  • A kind of antibacterial polycarbonate and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Dissolve perfluorohexylethyl iodide and triphenylphosphine in acetonitrile at a molar ratio of 1:1 (triphenylphosphine / acetonitrile = 1g / mL) and add it to a flask equipped with a magnet, and control the reaction temperature at 70°C After stirring for 48 hours, the solvent was removed by rotary evaporation, and the crude reaction product was washed three times with ether, filtered under reduced pressure, and then dried in vacuo at 30°C. The product PF5 was obtained as a white powdery solid.

Embodiment 2

[0036] Dissolve perfluorohexylethyl iodide and triphenylphosphine in acetonitrile (triphenylphosphine / acetonitrile=0.5g / mL) at a molar ratio of 1.5:1 and add them to a flask equipped with a magnet, and control the reaction temperature at 90 °C, stirred for 24 hours, and then the solvent was removed by rotary evaporation. The crude reaction product was washed three times with ether, filtered under reduced pressure, and then dried in vacuum at 50 °C. The product PF5 was obtained as a white powdery solid.

[0037] Preparation of antibacterial agent PF7

Embodiment 3

[0039] Dissolve perfluorooctylethyl iodide and triphenylphosphine in acetonitrile (triphenylphosphine / acetonitrile=0.8g / mL) according to the molar ratio of 1.2:1 and add them to the flask equipped with a magnet, and control the reaction temperature at After stirring for 48 hours at 75°C, the solvent was removed by rotary evaporation. The crude reaction product was washed three times with ether, filtered under reduced pressure, and then dried in vacuo at 35°C. The product PF7 was obtained as a white powdery solid.

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Abstract

The invention discloses an antibacterial polycarbonate, a preparation method and application thereof. The antibacterial polycarbonate, in parts by mass, its raw materials include 90 to 99 parts of polycarbonate and 1 to 10 parts of organic antibacterial agent; the organic antibacterial agent is composed of perfluoroalkyl ethyl halide and prepared from triphenylphosphine. The thermal decomposition temperature of the organic antibacterial agent in the antibacterial polycarbonate of the present invention is higher than the processing temperature of polycarbonate, therefore can avoid the problem that causes antibacterial property failure due to thermal decomposition during processing, also can reduce inorganic antibacterial agent usage of.

Description

technical field [0001] The invention belongs to the technical field of engineering plastics, and in particular relates to an antibacterial polycarbonate and its preparation method and application. Background technique [0002] Polycarbonate (referred to as PC) is a high molecular polymer containing carbonate groups in the molecular chain. In the PC macromolecular chain, there are alternating combinations of flexible carbonate bonds and rigid aralkylene groups, which make it have the advantages of light weight, impact resistance, good transparency, good dielectric properties, heat resistance, and cold resistance. At present, it is widely used in construction, food packaging, electronic appliances, optical transparency, medical equipment, automobile manufacturing and aerospace and other fields. [0003] The surface of plastic products will be contaminated with bacteria during use, such as Staphylococcus aureus and Escherichia coli. If the bacteria grow to a certain amount on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08K5/50
CPCC08K5/50C08L69/00
Inventor 何经纬刘芳艾军伟
Owner SOUTH CHINA UNIV OF TECH