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Metal ion-carried nerchinskite nano tube/polyether sulfone hybridized antibacterial membrane and preparation method thereof

A halloysite nanotube, metal-loaded technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., to achieve the effect of increased pure water flux, good bacteriostatic ability, and wide application

Active Publication Date: 2011-05-11
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although copper is a commonly used antibacterial agent, its application in organic separation membranes has not been reported

Method used

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  • Metal ion-carried nerchinskite nano tube/polyether sulfone hybridized antibacterial membrane and preparation method thereof
  • Metal ion-carried nerchinskite nano tube/polyether sulfone hybridized antibacterial membrane and preparation method thereof
  • Metal ion-carried nerchinskite nano tube/polyether sulfone hybridized antibacterial membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The formula of the casting solution is: PES (polyethersulfone resin) 22%; PVP (polyvinylpyrrolidone) 8%; acetone 0.8%; halloysite nanotubes loaded with copper ions 2%; amides).

[0035] (1) Membrane preparation

[0036] Dry all the instruments directly in contact with the medicine first, add the halloysite nanotubes loaded with copper ions into DMAC, stir on an electromagnetic stirrer for 1 h, so that the nanotubes are evenly dispersed in DMAC, and then add PES, PVP and acetone, and stir it on an electromagnetic stirrer for 10 h to fully dissolve it and make a uniform casting solution. The prepared casting solution was filtered with a filter cloth to remove insoluble impurities, ultrasonically oscillated for 90 min for defoaming, and then allowed to stand for 24 h, and the film was scraped within 48 h. In the film-making room, use a glass rod to scrape the static casting solution on a clean glass plate into a thin layer of film solution with a thickness of 0.3 mm, and...

Embodiment 2

[0041] The formulation of the casting solution is: PES 18%; PVP 9%; acetone 1%; halloysite nanotubes loaded with copper ions 1%; the other is the solvent DMAC.

[0042] First dry all the instruments that are directly in contact with the drug, put the halloysite nanotubes loaded with copper ions in DMAC, and stir on an electromagnetic stirrer for 0.5 h, so that the nanotubes are evenly dispersed in DMAC, and then add PES, PVP and acetone, and stirred on an electromagnetic stirrer for 8 hours to fully dissolve it, and made a uniform casting solution, filtered the prepared casting solution with a filter cloth to remove insoluble impurities, and ultrasonically oscillated for 60 minutes to defoam and then let it stand 20 h, and scrape the film within 48 h. In the film-making room, use a glass rod to scrape the static casting solution on a clean glass plate into a thin layer of film solution with a thickness of 0.3 mm, and then immerse the scraped film in the prepared 28°C water to ...

Embodiment 3

[0045] The formulation of the casting solution is: PES 16%; PVP 8%; acetone 0.9%; silver-loaded halloysite nanotubes 1%; the other is the solvent N,N-dimethylacetamide (DMAC).

[0046] Dry all the instruments directly in contact with the medicine first, put the halloysite nanotubes loaded with simple silver in DMAC, and stir on an electromagnetic stirrer for 0.5 h, so that the nanotubes are evenly dispersed in DMAC, and then add PES, PVP and acetone, and stirred on an electromagnetic stirrer for 7 hours to fully dissolve it, and made a uniform casting solution, filtered the prepared casting solution with a filter cloth to remove insoluble impurities, and ultrasonically oscillated for 50 minutes to defoam and then let it stand 18 h, and scrape the film within 48 h. In the film-making room, use a glass rod to scrape the static casting solution on a clean glass plate into a thin layer of film solution with a thickness of 0.3 mm, and then immerse the scraped film in the prepared 3...

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Abstract

The invention discloses a preparation method of a metal ion-carried nerchinskite nano tube / polyether sulfone hybridized antibacterial membrane, and belongs to the technical field of membranes. The invention is characterized in that: the antibacterial property and the contamination resistance of the membrane are improved by using the antibacterial property of a metal ion-carried nerchinskite nano tube and the hydrophilic property of the nerchinskite nano tube under the condition that the water flux and the interception rate of the polyether sulfone ultra-filtration membrane are not reduced. Meanwhile, the preparation method and preparation equipment are simple. The membrane serving as a novel ultra-filtration membrane is expected to be applied in wastewater treatment more widely.

Description

technical field [0001] The invention belongs to the technical field of membrane preparation, and in particular relates to a halloysite nanotube / polyethersulfone hybrid antibacterial membrane loaded with metal ions and a preparation method thereof. Background technique [0002] At present, human beings are being attacked more and more violently by harmful microorganisms represented by bacteria, which has caused serious consequences. Therefore, products with antibacterial properties are more and more favored by people, and people have also developed a series of products. Antibacterial agents. [0003] Antibacterial agents can be divided into three categories according to different materials: organic antibacterial agents, inorganic antibacterial agents and natural antibacterial agents. Inorganic antibacterial agents have been more and more widely used due to their advantages of good stability, durability, safety, broad antibacterial spectrum, not easy to produce drug resistanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/68B01D69/12
Inventor 张亚涛张浩勤陈义丰刘金盾张延武张翔张冰
Owner ZHENGZHOU UNIV
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