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Preparation method and application of grafted dendritic polymer electrostatic spinning nanofiber membrane oil-water separation material

A nanofiber membrane and electrospinning technology, which is applied in the field of preparation of grafted dendritic polymer electrospinning nanofiber membrane oil-water separation materials, can solve problems such as unfounded construction ideas, and achieve improved oil-water separation efficiency and excellent performance. Structural properties, effects of increasing crash efficiency

Pending Publication Date: 2020-06-12
雅邦绿色过程与新材料研究院南京有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the patent library, there is no construction idea of ​​directly grafting dendritic polymers to oil-water separation membrane materials

Method used

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  • Preparation method and application of grafted dendritic polymer electrostatic spinning nanofiber membrane oil-water separation material
  • Preparation method and application of grafted dendritic polymer electrostatic spinning nanofiber membrane oil-water separation material
  • Preparation method and application of grafted dendritic polymer electrostatic spinning nanofiber membrane oil-water separation material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Electrospun nanofibrous membranes were prepared from polyacrylonitrile. The dendritic polymer PAMAM (G1) is used as the dendritic polymer, which is modified by silane coupling agent γ-aminopropyltrimethoxysilane. Subsequently, the nano-silica is used as inorganic nanoparticles, modified by ethanolamine, and the modified nano-silica is grafted onto the oil-water separation membrane.

[0026] Under the protection of nitrogen, add 2.5 g of dendritic polymer PAMAM (G1) into the three-necked flask, raise the temperature to 180 °C, and then add 10 g of silane coupling agent γ-aminopropyltrimethoxy to the Erlenmeyer flask Silane, and mixed evenly, reacted at this temperature for 6 hours, stopped the reaction and condensed to obtain PAMAM modified by silane coupling agent. The modified dendritic polymer is reacted with the nanofiber membrane coated with polydopamine on the surface to obtain the modified nanofiber membrane.

[0027] Using nano-silicon dioxide as nanoparticles ...

Embodiment 2

[0030] Electrospun nanofibrous membranes were prepared from polyacrylonitrile. Using the dendritic polymer PAMAM (G1) as the dendritic polymer, the modified nanofibrous membrane was obtained by modifying the silane coupling agent N-β-(aminoethyl)-γ-aminopropylmethyldimethoxysilane , and subsequently, using nano-silica as inorganic nanoparticles, modified by propanolamine, and the modified nano-silica is grafted onto the oil-water separation membrane.

[0031] Under the protection of nitrogen, add 3 g of dendritic polymer PAMAM (G1) into the three-necked flask, raise the temperature to 160 °C, and then add 12 g of silane coupling agent N-β-(aminoethyl )-γ-aminopropylmethyldimethoxysilane, and mix uniformly, react at this temperature for 8 hours, stop the reaction and condense to obtain PAMAM modified by silane coupling agent. The modified dendritic polymer is reacted with the nanofiber membrane coated with polydopamine on the surface to obtain the modified nanofiber membrane. ...

Embodiment 3

[0035] Electrospun nanofibrous membranes were prepared from polyacrylonitrile. The dendritic polymer PAMAM (G2) was used as the dendritic polymer and modified by the silane coupling agent γ-aminopropyltrimethoxysilane to obtain a modified nanofibrous membrane, followed by nano-silica as the inorganic nanoparticle , modified by propanolamine, the modified nano-silica is grafted onto the oil-water separation membrane.

[0036] Under the protection of nitrogen, add 2g of dendritic polymer PAMAM (G2) into the three-necked flask, raise the temperature to 200°C, then add 10g of silane coupling agent γ-aminopropyltrimethoxysilane into the Erlenmeyer flask, And mix evenly, react at this temperature for 6 hours, stop the reaction and condense to obtain PAMAM modified by silane coupling agent. The modified dendritic polymer is reacted with the nanofiber membrane coated with polydopamine on the surface to obtain the modified nanofiber membrane.

[0037] Using nano-silicon dioxide as na...

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Abstract

The invention relates to a preparation method of a grafted dendritic polymer electrostatic spinning nanofiber membrane oil-water separation material. The preparation method comprises the following steps: 1, by using a dendritic polymer as a raw material, modifying the dendritic polymer by a silane coupling agent to obtain a modified dendritic polymer; 2, carrying out a reaction on the modified dendritic polymer with the electrostatic spinning nanofiber membrane coated with polydopamine on the surface to obtain a modified electrostatic spinning nanofiber membrane; 3, modifying the inorganic nano-particles by adopting a modifying substance to obtain modified inorganic nano-particles; 4, placing the modified electrostatic spinning nanofiber membrane in a modified inorganic nanoparticle solution for a period of time to complete a grafting reaction so as to obtain the dendritic polymer electrostatic spinning nanofiber membrane oil-water separation material. Due to special functional groupson the surface of the dendritic polymer, the dendritic polymer has a large adjusting space for wettability of a nanofiber membrane and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of filter material preparation and oil-water separation, and in particular relates to a preparation method and application of a grafted dendritic polymer electrostatic spinning nanofiber membrane oil-water separation material. Background technique [0002] Water resources are the basis for human survival and development. However, with the continuous development of industry and agriculture, the accompanying water pollution has seriously hindered the sustainable development of human society. In recent years, due to the increasing demand for energy and petrochemical products, the massive exploitation of petroleum resources, [0003] The process of processing, transportation and use leads to frequent oil spill accidents on the water surface and discharges a huge amount of oily sewage, which has long-term harm to the ecological environment and seriously threatens human health. Therefore, the control of water body oil poll...

Claims

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Application Information

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IPC IPC(8): B01D71/76B01D69/02B01D67/00B01D61/38B01D17/022D06M11/79D06M15/37D06M13/513D06M11/46D06M11/44D06M11/45D06M101/28D06M101/24D06M101/30D06M101/26D06M101/34
CPCB01D17/02B01D61/38B01D67/0079B01D69/02B01D71/76B01D2325/40D06M11/44D06M11/45D06M11/46D06M11/79D06M13/513D06M15/37D06M2101/24D06M2101/26D06M2101/28D06M2101/30D06M2101/34
Inventor 李望良唐斌宋太沧王宇
Owner 雅邦绿色过程与新材料研究院南京有限公司
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