Polyvinylidene fluoride (PVDF) antibacterial film doped with nano-zinc oxide and preparation method

A technology of polyvinylidene fluoride and nano-zinc oxide, which is applied in the direction of chemical instruments and methods, membranes, membrane technology, etc., can solve the problems of increasing operating energy consumption, reducing membrane life, membrane pollution, etc., and achieves pollution reduction and hydrophilic The effect of improved performance and simple process

Inactive Publication Date: 2016-11-16
HUAZHONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The hydrophobic nature of polyvinylidene fluoride makes it extremely easy to adsorb pollutants on the surface and pores of

Method used

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  • Polyvinylidene fluoride (PVDF) antibacterial film doped with nano-zinc oxide and preparation method
  • Polyvinylidene fluoride (PVDF) antibacterial film doped with nano-zinc oxide and preparation method
  • Polyvinylidene fluoride (PVDF) antibacterial film doped with nano-zinc oxide and preparation method

Examples

Experimental program
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Example Embodiment

[0024] Example 1:

[0025] A polyvinylidene fluoride antibacterial film doped with nano-zinc oxide, which is made of the following raw materials in parts by weight:

[0026]

[0027]

[0028] A preparation method of a polyvinylidene fluoride antibacterial film doped with nano zinc oxide, the steps are:

[0029] A. Add the weighed pore-forming agent and nano-zinc oxide material into the weighed organic solvent and ultrasonically disperse for 30 or 40 or 50 or 60 minutes;

[0030] B. Stir mechanically for 0.5 or 1.0 or 1.5 hours, let stand for 24 or 32 or 48 hours for degassing, and obtain the casting solution;

[0031] C. Scrape the casting solution on a glass plate to form a film at 20 or 25 or 30°C, slowly put it into the coagulation solution and soak until the film falls off, rinse the film with distilled water at room temperature (25°C), Soak in deionized water for 48 or 60 or 72 hours to obtain a polyvinylidene fluoride antibacterial film doped with nanometer zinc ...

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Abstract

The invention discloses a PVDF antibacterial film doped with nano-zinc oxide and a preparation method. The film is prepared by certain parts, by weight, of nano-zinc oxide, pore-foaming agent, organic solvent and PVDF, the steps are that (1) the weighed pore-foaming agent and nano-zinc oxide are added to the organic solvent for ultrasonic dispersion; (2) the weighed PVDF is added to the organic solvent, and the mixture is heated, stirred, stood and defoamed to obtain a casting film liquid; (3) after the casting film liquid is scrapped into a film, the film is placed into a solidification liquid and soaked until the film falls, and the PVDF antibacterial film doped with the nano-zinc oxide is obtained. The formula is reasonable, the use is convenient, the antibacterial rate of the PVDF antibacterial film doped with the nano-zinc oxide can be improved by more than 60%, the film contamination index is reduced by 80%, and the microbial contamination resistance of the film is remarkably enhanced. The water flux is improved by more than 100%, and the hydrophilia is improved remarkably.

Description

technical field [0001] The invention belongs to the field of antibacterial film materials, and more specifically relates to a polyvinylidene fluoride antibacterial film doped with nano-zinc oxide, and also relates to a preparation method of a polyvinylidene fluoride antibacterial film doped with nano-zinc oxide, which is suitable for film Inhibit or kill germs and viruses in water when filtered. Background technique [0002] The hydrophobic nature of polyvinylidene fluoride makes it extremely easy to adsorb pollutants on the surface and pores of polyvinylidene fluoride membranes, causing membrane pollution, increasing operating energy consumption, and reducing membrane life. Microbial fouling is one of the important factors for membrane fouling, so it is urgent to modify polyvinylidene fluoride membranes. [0003] In the water environment, nano-ZnO can generate active oxygen species with strong chemical activity under the irradiation of visible light (·O －2 ,·OH, 1 o 2 )...

Claims

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Application Information

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IPC IPC(8): B01D69/02B01D67/00B01D71/34B01D71/02
CPCB01D69/02B01D67/0079B01D71/024B01D71/34B01D2323/02B01D2325/48
Inventor 左行涛龚烨霞胡波张事
Owner HUAZHONG AGRICULTURAL UNIVERSITY
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