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Antibacterial polyethylene material and preparation method thereof

A technology of polyethylene and hydroxypolyethylene, applied in botany equipment and methods, chemicals for biological control, biocides, etc., can solve the problems of easy discoloration, poor heat resistance, and low safety of antibacterial agents, and achieve Excellent water resistance, high antibacterial efficiency, and easy handling

Inactive Publication Date: 2020-12-29
邓天生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The preparation of antibacterial plastics is mainly achieved by adding a certain amount of antibacterial agents in the plastic granulation process; there are many types of antibacterial agents, including inorganic antibacterial agents and organic antibacterial agents, inorganic antibacterial agents and organic antibacterial agents. Each has its advantages and disadvantages. Inorganic antibacterials have higher heat resistance, but they have the disadvantage of easy discoloration of Ag-based antibacterial agents, and the dosage is relatively large, and the cost is high; organic antibacterial agents have higher sterilization efficiency and less addition, but there are Poor heat resistance, easy to precipitate, low safety and other disadvantages

Method used

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  • Antibacterial polyethylene material and preparation method thereof
  • Antibacterial polyethylene material and preparation method thereof
  • Antibacterial polyethylene material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Preparation of polyethylene macromolecular chain transfer agent.

[0031] Add 3-benzylsulfanylthiocarbonylsulfanylpropionic acid (6.0mmol) and 20ml of anhydrous tetrahydrofuran THF in a 50mL branched flask, place the branched flask on the reactor, and raise the temperature of the reactor to 70 ℃, slowly drop SOCl 2 (6.0mmol), the dropwise addition was completed, and the reaction was continued for 2.5h. After the reaction was completed, the product was cooled to room temperature, and the SOCl was removed by distillation under reduced pressure. 2 and THF to give 3-benzylsulfanylthiocarbonylsulfanylpropionyl chloride.

[0032] N 2 Under protection, add single-terminal hydroxypolyethylene (1.0mmol) into a 50ml Schlenk bottle, add 30ml of anhydrous toluene, heat up to 60°C, after the single-terminal hydroxypolyethylene is completely dissolved, add 1ml of pyridine, stir for 30min, drop Add the above-mentioned 3-benzylsulfanylthiocarbonylsulfanylpropionyl chloride dissolved...

Embodiment 2

[0034] Preparation of antimicrobial polyethylene materials.

[0035] N 2 Under protection, polyethylene macromolecular chain transfer agent (0.1mmol), azobisisobutyronitrile (0.01mmol), 2-guanidino ethyl acrylate hydrochloride (5.0mmol) were added to a 25ml Schlenk bottle, and 5mL of dioxane, raise the temperature of the reactor to 70°C, react for 1h, put the product into liquid nitrogen to quench the reaction to stop the reaction, add the product dropwise to methanol / water to precipitate out, dissolve the precipitate 3 times continuously, filter, And washed with methanol, dried in vacuum at 45° C. to constant weight to obtain an antibacterial polyethylene material with a yield of 84.9%.

Embodiment 3

[0037] Preparation of antimicrobial polyethylene materials.

[0038] N 2 Under protection, polyethylene macromolecular chain transfer agent (0.1mmol), azobisisobutyronitrile (0.01mmol), 2-guanidino ethyl acrylate hydrochloride (5.0mmol) were added to a 25ml Schlenk bottle, and 5mL of dioxane, raise the temperature of the reactor to 70°C, react for 1.5h, put the product into liquid nitrogen to quench the reaction to stop, add the product dropwise to methanol / water to precipitate out, dissolve the precipitate 3 times continuously, filter , and washed with methanol, dried under vacuum at 45° C. to constant weight to obtain an antibacterial polyethylene material with a yield of 86.1%.

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Abstract

The invention discloses an antibacterial polyethylene material and a preparation method thereof. The preparation method comprises the following steps: taking single-terminal hydroxyl polyethylene as araw material, reacting with a small molecular chain transfer agent to obtain a polyethylene macromolecular chain transfer agent, and initiating 2-guanidino ethyl methyl acrylate hydrochloride to generate free radical polymerization by the polyethylene macromolecular chain transfer agent to obtain the antibacterial polyethylene material. The antibacterial polyethylene material has the advantages of high antibacterial efficiency, high antibacterial durability, low cost, no toxicity or harm to human bodies and high water resistance; the preparation method is simple, easy to operate and suitablefor industrial application.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to an antibacterial polyethylene material and a preparation method thereof. Background technique [0002] In recent years, with the improvement of people's living standards and the enhancement of hygiene awareness, the demand for various antibacterial material products has been increasing, of which antibacterial plastic products account for a large proportion, various daily products, including refrigerators, air conditioners, various food Various thermoplastic antibacterial plastics are used in containers, packaging bags, washing machines, toy products, vacuum cleaners, etc. [0003] The preparation of antibacterial plastics is mainly achieved by adding a certain amount of antibacterial agents in the plastic granulation process; there are many types of antibacterial agents, including inorganic antibacterial agents and organic antibacterial agents, inorganic antibacterial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F293/00C08F2/38C08F110/02C08F8/34A01N47/44A01P1/00
CPCC08F293/005C08F2/38C08F8/34A01N47/44C08F2438/03C08F2810/40C08F110/02
Inventor 邓天生
Owner 邓天生