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A superhydrophilic core-shell polyvinylidene fluoride hexafluoropropylene/copper oxide nanosheet film, preparation method and application thereof

A technology of polyvinylidene fluoride hexafluoropropylene and polyvinylidene fluoride, which is applied in the field of preparation of superhydrophilic core-shell polyvinylidene fluoride hexafluoropropylene/copper oxide nanosheet membrane, can solve the problem of restricting the promotion of large-scale production, There are problems such as potential safety hazards, high energy consumption and high cost, and achieve the effects of excellent flexibility, low equipment requirements, and low growth temperature

Active Publication Date: 2019-09-03
ANHUI POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The calcination temperature of 500-600°C has high requirements on the equipment, the energy consumption and cost are relatively large during use, and there are potential safety hazards
The growth temperature is 120-150°C, which limits the promotion of practical mass production

Method used

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  • A superhydrophilic core-shell polyvinylidene fluoride hexafluoropropylene/copper oxide nanosheet film, preparation method and application thereof
  • A superhydrophilic core-shell polyvinylidene fluoride hexafluoropropylene/copper oxide nanosheet film, preparation method and application thereof
  • A superhydrophilic core-shell polyvinylidene fluoride hexafluoropropylene/copper oxide nanosheet film, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A superhydrophilic core-shell polyvinylidene fluoride hexafluoropropylene / copper oxide nanosheet film, which is prepared by the following steps:

[0045]Step 1, weigh 1.8 grams of anhydrous copper acetate, 15 grams of DMF, and 15 grams of Acetone in a 100ml glass bottle, and stir continuously at 60°C for 1 hour; at room temperature, weigh 3.6 grams of PVDF-HFP in anhydrous copper acetate solution , Stirring continuously at room temperature for 4h, a blue transparent spinning solution was obtained.

[0046] Step 2, the spinning solution is poured into the spinning device ( figure 1 ) in the solution tank. Adjust the electrospinning process parameters as: spinning voltage 25kV, receiving distance 25cm. The dial rotation speed is 12r / min. An organic / inorganic hybrid nanofibrous membrane was obtained. From figure 2 According to the FE-SEM, the fiber surface is smooth, the fiber diameter is relatively uniform, and the fiber diameter is 198±24nm.

[0047] Step 3, putti...

Embodiment 2

[0053] A superhydrophilic core-shell polyvinylidene fluoride hexafluoropropylene / copper oxide nanosheet film, which is prepared by the following steps:

[0054] Step 1, weigh 1.2 grams of anhydrous copper acetate, 15 grams of DMF, and 15 grams of Acetone in a 100ml glass bottle, and stir continuously at 60°C for 1 hour; at room temperature, weigh 3.6 grams of PVDF-HFP in anhydrous copper acetate solution , Stirring continuously at room temperature for 4h, a blue transparent spinning solution was obtained.

[0055] Step 2, pour the spinning solution into the solution tank of the spinning device. Adjust the electrospinning process parameters as: spinning voltage 25kV, receiving distance 25cm. The dial rotation speed is 12r / min. An organic / inorganic hybrid nanofiber membrane was obtained.

[0056] Step 3, putting the organic / inorganic nanofiber membrane into an oven at a temperature of 110° C. for 20 hours. The temperature is naturally lowered to obtain an organic / inorganic n...

Embodiment 3

[0062] A superhydrophilic core-shell polyvinylidene fluoride hexafluoropropylene / copper oxide nanosheet film, which is prepared by the following steps:

[0063] Step 1: Weigh 0.6 grams of anhydrous copper acetate, 15 grams of DMF, and 15 grams of Acetone in a 100ml glass bottle, and stir continuously at 60°C for 1 hour; at room temperature, weigh 3.6 grams of PVDF-HFP in anhydrous copper acetate solution , Stirring continuously at room temperature for 4h, a blue transparent spinning solution was obtained.

[0064] Step 2, pour the spinning solution into the solution tank of the spinning device. Adjust the electrospinning process parameters as: spinning voltage 25kV, receiving distance 25cm. The dial rotation speed is 12r / min. An organic / inorganic hybrid nanofiber membrane was obtained.

[0065] Step 3, putting the organic / inorganic nanofiber membrane into an oven at a temperature of 120° C. for 24 hours. The temperature is naturally lowered to obtain an organic / inorganic n...

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Abstract

The invention discloses a super-hydrophilic core-shell PVDF (Polyvinylidene Fluoride)-HFP (Hexafluoropropylene) / copper oxide nano-sheet membrane, a preparation method and application thereof. The preparation method comprises the following steps: step one, preparing a spinning solution; step two, carrying out electrostatic spinning on the spinning solution, thus preparing an organic / inorganic hybrid nanofiber membrane; step three, baking and cooling the organic / inorganic hybrid nanofiber membrane, thus obtaining a nanofiber membrane with a copper oxide seed on fiber surface; step four, putting the nanofiber membrane with the copper oxide seed on the fiber surface in a copper oxide growth solution, sealing, reacting under 50 to 60 DEG C, and cooling to a room temperature, thus obtaining the super-hydrophilic core-shell PVDF-HFP / copper oxide nano-sheet membrane. According to the preparation method disclosed by the invention, the growth temperature is low, the operability is strong, an obtained hydrophilic membrane has an excellent flexible characteristic, and a firm foundation is laid for real application and popularization.

Description

technical field [0001] The invention belongs to the technical field of functional nanometer materials, and in particular relates to a superhydrophilic core-shell polyvinylidene fluoride hexafluoropropylene / copper oxide nanosheet film, a preparation method and an application thereof. Background technique [0002] Since oil spills and the oil-water mixture produced by industrial and agricultural production have increasingly affected people's lives, the problem of oil-water separation has become a hot spot for researchers all over the world. Traditional methods such as air flotation, gravity separation, oil-absorbing materials, and coagulation have brought many limitations to practical applications due to their low separation efficiency, high energy consumption, and complicated separation equipment, especially for granular Oil-water emulsions with smaller diameters have poor separation effects (reference 1: Yang H C, Liao K J, Huang H, et al. Mussel-inspired modification of a p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/42D04H1/4318D04H1/728B01D17/022D06M101/22
Inventor 刘志凤权魏安方
Owner ANHUI POLYTECHNIC UNIV