Alcohol amine modified graphene oxide/polyvinylidene fluoride blended membrane for gas-liquid membrane contactor and preparation method of blended membrane
A polyvinylidene fluoride membrane and a polyvinylidene fluoride technology are applied in the field of modified graphene oxide/PVDF membranes with alcohol amines for gas-liquid membrane contactors and their preparation fields, which can solve the problems of large gas diffusion resistance and achieve desulfurization efficiency The effect of improving, simple and controllable preparation process, strength and stability improvement
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Embodiment 1
[0023] The ethanolamine-modified graphene oxide / polyvinylidene fluoride blend film is composed of ethanolamine-modified redox graphene and polyvinylidene fluoride, and the mass ratio of ethanolamine-modified graphene oxide to polyvinylidene fluoride is 1:100.
[0024] The preparation method of the above-mentioned ethanolamine modified graphene oxide / polyvinylidene fluoride blend film is as follows:
[0025] (1) Dilute the prepared graphene oxide to 2 mg / ml, put 65 mL of the diluted graphene oxide solution in a three-necked flask, add 0.155 g of potassium hydroxide, and perform ultrasonic treatment for 1 hour. Add 5 mL of ethanolamine to the above solution, and reflux for 3 hours under the condition of 80° C. water bath. After the reaction was completed, a black solution was obtained, and the reaction product was dialyzed to neutrality, freeze-dried, and the product was used for future use.
[0026] (2) 0.16wt.% ethanolamine modified graphene oxide, 16wt.% polyvinylidene fluor...
Embodiment 2
[0029] The ethanolamine-modified graphene oxide / polyvinylidene fluoride blend film is composed of ethanolamine-modified redox graphene and polyvinylidene fluoride, wherein the mass ratio of ethanolamine-modified graphene oxide and polyvinylidene fluoride is 3:100.
[0030] The preparation method of the above-mentioned ethanolamine modified graphene oxide / polyvinylidene fluoride blend film is as follows:
[0031](1) Dilute the prepared graphene oxide to 2 mg / ml, put 65 mL of the diluted graphene oxide solution in a three-necked flask, add 0.155 g of potassium hydroxide, and perform ultrasonic treatment for 1 hour. Add 5 mL of ethanolamine to the above solution, and reflux for 3 hours under the condition of 80° C. water bath. After the reaction was completed, a black solution was obtained, and the reaction product was dialyzed to neutrality, freeze-dried, and the product was used for future use.
[0032] (2) 0.48wt.% ethanolamine modified graphene oxide, 16wt.% polyvinylidene f...
Embodiment 3
[0035] Diethanolamine-modified graphene oxide / polyvinylidene fluoride blend film is composed of diethanolamine-modified redox graphene and polyvinylidene fluoride, wherein the mass ratio of diethanolamine-modified graphene oxide and polyvinylidene fluoride is 1: 100.
[0036] The preparation method of the above-mentioned diethanolamine modified graphene oxide / polyvinylidene fluoride blend film is as follows:
[0037] (1) Dilute the prepared graphene oxide to 2 mg / ml, put 65 mL of the diluted graphene oxide solution in a three-necked flask, add 0.155 g of potassium hydroxide, and perform ultrasonic treatment for 1 hour. Add 5 mL of ethanolamine to the above solution, and reflux for 3 hours under the condition of 80° C. water bath. After the reaction was completed, a black solution was obtained, and the reaction product was dialyzed to neutrality, freeze-dried, and the product was used for future use.
[0038] (2) 0.16wt.% diethanolamine modified graphene oxide, 16wt.% polyvin...
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