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Polyaniline composite antibacterial plastic as well as preparation method and application thereof

A composite antibacterial and composite plastic technology, applied in the direction of polyamide coatings, botanical equipment and methods, applications, etc., to reduce application costs, reduce usage, and improve performance

Inactive Publication Date: 2012-01-11
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a polyaniline composite antibacterial plastic and its preparation method and application, solve the processing problem of polyaniline composite plastic, and promote the application progress of polyaniline composite material in various fields such as antibacterial, antistatic, anticorrosion and antifouling materials

Method used

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  • Polyaniline composite antibacterial plastic as well as preparation method and application thereof
  • Polyaniline composite antibacterial plastic as well as preparation method and application thereof
  • Polyaniline composite antibacterial plastic as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Add 18 liters of tap water in the reactor, drop into 500 grams of aniline, stir for 1 hour, obtain aniline aqueous solution; Add 1 liter of water in the reactor of 2 liters again, add the concentrated hydrochloric acid (concentration 37%wt) of 500 milliliters slowly again, prepare into hydrochloric acid aqueous solution. Then slowly pour the hydrochloric acid solution into the above aniline aqueous solution, and stir the reaction solution for 1 hour. 1225 grams of ammonium persulfate was added into 3 liters of water to form an aqueous solution, and then added dropwise to the reaction solution for about 2 hours. After 24 hours of reaction, polyaniline doped with hydrochloric acid was suspended in the reaction liquid, and the pH value of the reaction liquid was adjusted to 8-9 with an alkaline aqueous solution made of about 500-700 grams of sodium hydroxide, etc., and continued to stir for 24 hours to remove Doping, filtering, and washing with water to remove residual in...

Embodiment 2

[0051] 15 grams of embodiment 1 intrinsic state polyaniline and 485 grams of low density polyethylene masterbatch (density is 0.910~0.926 / cm 3 , particle size is 3mm), with a blender at 130-150 ° C under the melt mechanical mixing, then pulverized to make polyaniline PE (polyethylene) masterbatch, tablet molding to make antibacterial test pieces. According to the Japanese National Standard JISZ 2801: 2000 Detection and evaluation of antibacterial properties of antibacterial products to test the antibacterial effect of polyaniline plastic film. The antibacterial performance test results of the composite material show that the antibacterial rate against Escherichia coli, Staphylococcus aureus and Candida albicans reaches 99%.

[0052] The mechanical performance test results of the composite material show that it maintains the mechanical performance of the matrix polymer material.

Embodiment 3

[0054] 15 grams of embodiment 1 intrinsic state polyaniline and 485 grams of polypropylene masterbatches (particle size is 3mm), carry out melting mechanical mixing at 200-220 ℃ with the blender first, then pulverize and make polyaniline PP (polypropylene ) masterbatch, tablet molding to make antibacterial test pieces. The antibacterial performance test results of the composite material show that it has no antibacterial effect on Escherichia coli, Staphylococcus aureus and Candida albicans.

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Abstract

The invention belongs to the field of antibacterial polymer materials and a processing method thereof, and particularly relates to a polyaniline composite antibacterial plastic as well as a preparation method and application thereof. The antibacterial plastic comprises a polyaniline main material and a polymer basis material, various forms of polyaniline or composite materials thereof, which are used as main antibacterial materials, and then are blended with other polymer basis materials, and then injection molding, blow molding, mould pressing, foaming and other plastic molding processes are carried out to obtain the polyaniline composite antibacterial environment purification material; and at a normal temperature, polyaniline can be dissolved or dispersed by solvents, and surface treatment is carried out on the plastic by being mixed with other polymers, for example, antibacterial antifouling and anticorrosive coatings and the like are manufactured through spray molding, casting, film painting, electrochemical deposition and other processes. The polyaniline composite material not only has an excellent antibacterial effect on escherichia coli, staphylococcus aureus, Candida albicans and the like, but also can be used as the environment purification material by utilizing the oxidoreduction characteristic to realize the removal of methanal, hydrothion, pollutant and other gases to keep the air fresh.

Description

technical field [0001] The invention belongs to the field of antibacterial polymer materials and processing thereof, specifically a polyaniline composite antibacterial plastic and its preparation method and application, using polyaniline conductive polymers with redox properties as antibacterial environmental purification materials, plastics or rubber, etc. Other polymer materials are used as matrix materials to form polyaniline composite antibacterial plastics through high temperature processes such as mixing, injection molding, blow molding, and coating under the protection of vacuum or inert gas. The composite material not only has excellent antibacterial effect, but also It can be used in anti-static, anti-corrosion and anti-fouling materials and other fields. Background technique [0002] Polyaniline has many advantages, such as cheap and easy-to-obtain raw materials, simple synthesis process, and excellent electrical conductivity, so it is particularly attractive. The ...

Claims

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Application Information

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IPC IPC(8): C08L55/02C08L23/06C08L23/12C08L27/06C08L25/06C08L67/02C08L33/12C08L71/12C08L59/02C08L77/00C08L69/00C08L79/02C08G73/02D01F8/16C09D155/02C09D123/06C09D123/12C09D127/06C09D125/06C09D167/02C09D133/12C09D171/12C09D159/02C09D177/00C09D169/00C09D179/02C09D5/08C09D5/16A01N33/06A01P1/00C09K3/16C09K3/00H01B1/12
Inventor 张彦英孙超石南林宫骏何虹祥刘利
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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