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Antibacterial ultrafiltration membrane

An ultrafiltration membrane and antibacterial technology, applied in the field of antibacterial ultrafiltration membrane, can solve the problems of unsatisfactory antibacterial performance, unsatisfactory effect, shortened service life, etc., and achieve excellent antibacterial property and excellent stable membrane flux , Improve the effect of hydrophilicity

Inactive Publication Date: 2016-08-17
安庆市天虹新型材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyacrylonitrile is a hydrophobic material, and the prepared membrane is prone to membrane fouling. In addition, its antibacterial performance is not very ideal, which shortens the service life of the membrane and increases the investment cost. Copolymerization, blending, plasma modification, chemical modification, etc. are carried out to improve its performance, but the effect is still not very satisfactory

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of antibacterial ultrafiltration membrane proposed by the present invention, its raw material comprises by weight: 40 parts of polyacrylonitrile, 15 parts of polyvinylpyrrolidone, 2.5 parts of inorganic particles, 50 parts of solvent, 3.5 parts of composite antibacterial agent, 0.8 parts of antioxidant share;

[0018] Wherein, the composite antibacterial agent is polymerized from N-(4-hydroxy-3-methoxybenzyl)acrylamide, 2-hydroxyethyl methacrylate, N,N-dimethylaminoethyl methacrylate become.

Embodiment 2

[0020] A kind of antibacterial ultrafiltration membrane that the present invention proposes, its raw material comprises by weight: polyacrylonitrile 55 parts, polyvinylpyrrolidone 5 parts, inorganic particle 1 part, solvent 100 parts, composite antibacterial agent 2 parts, antioxidant 3 parts share;

[0021] Wherein, the composite antibacterial agent is polymerized from N-(4-hydroxy-3-methoxybenzyl)acrylamide, 2-hydroxyethyl methacrylate, N,N-dimethylaminoethyl methacrylate become.

Embodiment 3

[0023] An antibacterial ultrafiltration membrane proposed by the present invention, its raw materials include by weight: 45 parts of polyacrylonitrile, 11 parts of polyvinylpyrrolidone, 1 part of silver ion-loaded zeolite molecular sieve, 0.5 part of nano-calcium carbonate, 85 parts of ethanol, composite 2.5 parts of antibacterial agent, 1.6 parts of tetraerythritol ester;

[0024] Wherein, the composite antibacterial agent is polymerized from N-(4-hydroxy-3-methoxybenzyl)acrylamide, 2-hydroxyethyl methacrylate, N,N-dimethylaminoethyl methacrylate into; the composite antibacterial agent is prepared according to the following process: N-(4-hydroxyl-3-methoxybenzyl) acrylamide is added into dimethylformamide and stirred evenly, the temperature is raised to 75° C., and nitrogen gas is passed. Add 2-hydroxyethyl methacrylate aqueous solution, N,N-dimethylaminoethyl methacrylate aqueous solution and azobisisobutyronitrile aqueous solution, react at 70°C for 20 hours, and obtain the...

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PUM

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Abstract

The invention discloses an antibacterial ultrafiltration membrane, the raw materials of which include by weight: 40-55 parts of polyacrylonitrile, 5-15 parts of polyvinylpyrrolidone, 1-2.5 parts of inorganic particles, 50-100 parts of solvent, composite antibacterial 2-3.5 parts of agent, 0.8-3 parts of antioxidant; the composite antibacterial agent consists of N-(4-hydroxy-3-methoxybenzyl) acrylamide, 2-hydroxyethyl methacrylate, N, Polymerized from N-dimethylaminoethyl methacrylate. The antibacterial ultrafiltration membrane proposed by the invention has good antibacterial performance, excellent antifouling performance and thermal stability, and long service life.

Description

technical field [0001] The invention relates to the technical field of membrane materials, in particular to an antibacterial ultrafiltration membrane. Background technique [0002] Polyacrylonitrile is another polymer commonly used to prepare ultrafiltration membranes next to cellulose acetate and polysulfone. It has good hydrolysis resistance, heat resistance, chemical stability and oxidation resistance. The prepared membrane At present, it has been widely used in ultrafiltration, dialysis, pervaporation and other fields. However, polyacrylonitrile is a hydrophobic material, and the prepared membrane is prone to membrane fouling. In addition, its antibacterial performance is not very ideal, which shortens the service life of the membrane and increases the investment cost. Copolymerization, blending, plasma modification, chemical modification, etc. are carried out to improve its performance, but the effect is still not very satisfactory. Contents of the invention [0003...

Claims

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Application Information

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IPC IPC(8): B01D71/42B01D69/02B01D67/00
CPCB01D71/42B01D67/0079B01D69/02B01D2325/48
Inventor 魏松
Owner 安庆市天虹新型材料科技有限公司
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