Preparation method of polyether sulfone functional separation membrane supporting dendritic polyamide-amine functional group

A polyethersulfone membrane and dendritic technology, applied in the field of preparation of separation membranes, can solve the problems of low efficiency of polyamide-amine groups, long process time, difficulty in recycling and reuse, etc., and achieve excellent adsorption performance and ensure disposal. Effectiveness, the effect of improving grafting efficiency

Inactive Publication Date: 2018-04-06
YANSHAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this technology has a low efficiency of grafting dendritic polyamide-amine groups on the surface of the hollow fiber membrane, and the adsorption efficiency of heavy metal ions is low. In addition, the process time for preparing the membrane is very long, which is not suitable for industrial production.
The patent with publication number CN103553195A mentions the use of ethylenediamine and methyl acrylate to synthesize dendritic polyamide-amine and hyperbranched polyamide-amine composi

Method used

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  • Preparation method of polyether sulfone functional separation membrane supporting dendritic polyamide-amine functional group

Examples

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Effect test

Embodiment 1

[0041] (1) Preparation and pulverization of chloroacetyl chloride-diethylenetriamine-polyethersulfone separation membrane:

[0042] First, polyethersulfone is subjected to chloroacetylation treatment: 135g of chloroform is placed in a three-necked round-bottomed flask, then 6g of polyethersulfone powder is added, and magnetically stirred at room temperature to dissolve it. After the polyethersulfone powder is completely dissolved, the 6g of chloroacetyl chloride was added dropwise to the above solution with a dropper, and then magnetically stirred for 10 minutes, and then the solution was ultrasonically oscillated for 20 minutes. Reaction: After the solution was subjected to ultrasonic vibration treatment, it was magnetically stirred again, and at the same time, the solution was heated to 40°C, and then 4g of anhydrous aluminum trichloride was added, and the magnetic stirring reaction was continued for 6h, starting from the dropwise addition of chloroacetyl chloride to the 6h r...

Embodiment 2

[0056] (1) Preparation and pulverization of chloroacetyl chloride-diethylenetriamine-polyethersulfone separation membrane:

[0057] First, carry out chloroacetylation treatment on polyethersulfone: put 135g of chloroform into a three-necked round-bottomed flask, then add 6g of polyethersulfone powder, and stir magnetically at room temperature to dissolve it. After the polyethersulfone powder is completely dissolved, Add 6g of chloroacetyl chloride dropwise to the above solution with a dropper, and then magnetically stir for 10 minutes, and then ultrasonically shake the solution for 20 minutes. Fully react; after the solution is ultrasonically oscillated, it is magnetically stirred again, and at the same time, the solution is heated to 40°C, and then 4g of anhydrous aluminum trichloride is added, and the magnetic stirring reaction is continued for 6h, starting from the dropwise addition of chloroacetyl chloride to the reaction for 6h During the whole process, the solution needs...

Embodiment 3

[0069] (1) Preparation and pulverization of chloroacetyl chloride-diethylenetriamine-polyethersulfone separation membrane:

[0070] First, polyethersulfone is subjected to chloroacetylation treatment: 135g of chloroform is placed in a three-necked round-bottomed flask, then 6g of polyethersulfone powder is added, and magnetically stirred at room temperature to dissolve it. After the polyethersulfone powder is completely dissolved, the 6g of chloroacetyl chloride was added dropwise to the above solution with a dropper, and then magnetically stirred for 10 minutes, and then the solution was ultrasonically oscillated for 20 minutes. Reaction: After the solution was subjected to ultrasonic vibration treatment, it was magnetically stirred again, and at the same time, the solution was heated to 40°C, and then 4g of anhydrous aluminum trichloride was added, and the magnetic stirring reaction was continued for 6h, starting from the dropwise addition of chloroacetyl chloride to the 6h r...

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Abstract

A preparation method of a polyether sulfone functional separation membrane supporting a dendritic polyamide-amine functional group includes the steps of: 1) performing chloroacetylation and aminationmodification treatment to polyether sulfone successively and preparing chloroacetylchlorine-diethylenetriamine-polyether sulfone separation membrane chips; 2) with methyl acrylate and ethylenediamineas main reagents, performing modification to the membrane chips by means of Michael addition and amidation reactions with plasma irradiation grafting synergistic technology; 3) preparing the polyethersulfone functional separation membrane supporting the dendritic polyamide-amine functional group via phase-transfer technology. The method is simple, wherein the grafting efficiency of the dendriticpolyamide-amine functional group is high. The functional group has large supporting quantity in the separation membrane, is stable in the separation membrane and is not liable to lose. The polyether sulfone functional separation membrane can remove heavy metals and phosphates in water body high-effectively and has a board application prospect in the field of water pollution control.

Description

technical field [0001] The invention relates to a preparation method of a separation membrane. Background technique [0002] With the rapid development of the national economy and the rapid expansion of industrial production, the discharge of industrial wastewater containing heavy metal pollutants is increasing day by day, which has led to a series of problems such as serious surface water and groundwater pollution, soil pollution, and food safety. national attention. As we all know, heavy metal pollutants have non-biodegradable properties, which can be transmitted in organisms through the food chain, and their bioaccumulation increases step by step, and can eventually accumulate in organisms, which seriously endangers the survival of organisms and ultimately human health. . In addition, phosphates can lead to eutrophication of water bodies, which in turn deteriorates environmental water bodies and damages the reproduction and growth of aquatic organisms and drinking water...

Claims

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Application Information

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IPC IPC(8): B01D71/82B01D67/00B01D69/02B01D71/56B01D71/68B01D71/78
CPCB01D67/0006B01D69/02B01D71/56B01D71/68B01D71/78B01D71/82B01D2323/36B01D2323/385B01D2325/12
Inventor 宋来洲王秀丽吉敏王进博丁怀宇张丽丽刘福顺
Owner YANSHAN UNIV
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