Ammonium salt antibacterial polyethylene material and preparation method thereof

A polyethylene and hydroxypolyethylene technology, applied in the fields of botanical equipment and methods, chemicals for biological control, biocides, etc., can solve the problems of loss of antibacterial properties, difficulty in ensuring compatibility, and achieve good antibacterial properties. Active, permanent antibacterial properties, antibacterial enhancement effect

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

In the prior art, most antibacterial agents are added to make polyethylene materials have antibacterial properties, and the external antibacterial agents are directly physically blended with polyethylene materials. There is no chemical bond between the two, and the antibacterial properties are easily lost, and compatibility is difficult. Guaranteed, based on this, the present invention provides a kind of ammonium salt antibacterial polyethylene material and preparation method thereof

Method used

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  • Ammonium salt antibacterial polyethylene material and preparation method thereof
  • Ammonium salt antibacterial polyethylene material and preparation method thereof
  • Ammonium salt antibacterial polyethylene material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of polyethylene macromolecular chain transfer agent.

[0030] Add 4-cyano-4-(thiobenzoic acid) valeric acid (5.0mmol) and 20ml of anhydrous tetrahydrofuran THF into a 50mL branched-necked flask, place the branched-necked flask on a heating reactor, raise the temperature to 80°C, Slowly add SOCl dropwise 2 (5.0mmol), the dropwise addition was completed, and after continuing the reaction for 1.5h, the reaction temperature was cooled to room temperature, and the SOCl was removed by distillation under reduced pressure. 2 and THF to give 4-cyano-4-(thiobenzoic acid)pentanoyl chloride.

[0031] Add the single-end hydroxyl polyethylene PE-OH (1.0mmol) into the 50ml Schlenk bottle, place the Schlenk bottle on the heating reactor, and pump nitrogen three times, N 2 Under protection, add 30ml of anhydrous toluene, raise the temperature to 80°C, add 1ml of pyridine after the PE-OH is completely dissolved, and after stirring for 30min, add the above-mentioned 4-cyano-...

Embodiment 2

[0033] Preparation of ammonium salt antibacterial polyethylene material.

[0034] Add ammonium salt (5.0mmol), polyethylene macromolecular chain transfer agent (0.08mmol), and azobisisobutyronitrile (0.01mmol) into a 25ml Schlenk bottle, place the Schlenk bottle on the heating reactor, and pump and charge it three times After nitrogen, N 2 Under protection, add 7.5mL N,N-dimethylformamide DMF, react in an 80°C oil bath for 1.5h, put the product into liquid nitrogen to quench, add the product dropwise to methanol / water to precipitate, and continuously dissolve the precipitate After 3 times, filter, wash with methanol, and dry under vacuum at 45°C to constant weight to obtain an ammonium salt antibacterial polyethylene material.

Embodiment 3

[0036] Preparation of polyammonium salts.

[0037] Add ammonium salt (5.0mmol), 4-cyano-4-(thiobenzoic acid) valeric acid (0.08mmol), azobisisobutyronitrile (0.01mmol) into a 25ml Schlenk bottle, place the Schlenk bottle on heating On the reactor, after pumping nitrogen three times, N 2 Under protection, add 7.5mL N,N-dimethylformamide DMF, react in an oil bath at 80°C for 0.5h, put the product into liquid nitrogen to quench, add the product dropwise to methanol / water to precipitate, and continuously dissolve the precipitate After 3 times, filter, wash with methanol, and dry under vacuum at 45°C to constant weight to obtain polyammonium salt.

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Abstract

The invention discloses an ammonium salt antibacterial polyethylene material and a preparation method thereof. The preparation method comprises the following steps: taking single-terminal hydroxyl polyethylene as a raw material, reacting with a chain transfer agent to obtain a polyethylene macromolecular chain transfer agent, and initiating ammonium salt polymerization by utilizing the polyethylene macromolecular chain transfer agent to obtain an ammonium salt antibacterial polyethylene material; the preparation process of the ammonium salt antibacterial polyethylene material is simple and non-toxic, and the obtained antibacterial material is safe and has lasting antibacterial property; good antibacterial activity is realized on proteus, pseudomonas aeruginosa, staphylococcus aureus and escherichia coli.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to an ammonium salt antibacterial polyethylene material and a preparation method thereof. Background technique [0002] Polyethylene (PE for short) is a thermoplastic resin obtained by polymerization of ethylene. Polyethylene is odorless, non-toxic, feels like wax, and has excellent low temperature resistance (the lowest operating temperature can reach -100~-70°C ), good chemical stability, resistant to most acids and bases (not resistant to acids with oxidizing properties), insoluble in general solvents at room temperature, low water absorption, and excellent electrical insulation. [0003] The cations of ammonium salt compounds adsorb negatively charged bacteria through electrostatic force, hydrogen bond force, and hydrophobic binding between surfactant molecules and protein molecules, and gather on the cell wall, resulting in room resistance effect, resulting in inhib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F293/00C08F2/38C08F110/02C08F8/34A01N37/36A01P1/00
CPCC08F293/005C08F2/38C08F8/34A01N37/36C08F2438/03C08F2810/40C08F110/02
Inventor 邓天生
Owner 邓天生
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