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
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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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