Preparation method of composite separating film filled by interpenetrating polymer network hydrogel

An interpenetrating network and separation membrane technology, applied in the field of preparation of interpenetrating network hydrogel-filled composite separation membranes, can solve the problems of unsuitability for large-scale industrial production, weak interaction, poor stability, etc., and achieve excellent adsorption and separation performance. , The method is simple and easy to operate

Active Publication Date: 2016-02-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the selective compatibility between solvents, membrane materials and additives, the blending method has great limitations, and the adsorption capacity of heavy metal ions is low; in the coating method, since the coating layer is generally combined with the base membra

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mix 5% 2-acetamidoacrylic acid, 10% N,N-methylenebisacrylamide, 0.1% benzophenone and water, and completely dissolve to obtain the first monomer solution; Mix 20% allyltrimethylammonium chloride, 1% N,N-methylenebisacrylamide, 0.1% azobisisobutyronitrile and ethanol / water (volume ratio 1 / 1) solution , completely dissolved to obtain the second monomer solution; soak the polysulfone flat membrane in the first monomer solution for 4 hours, take it out and irradiate the cross-linking reaction under ultraviolet light for 5 minutes to obtain the first network gel composite separation membrane, The irradiation dose is 8×10 4 Joule / square meter; Soak the first network gel composite separation membrane in the second monomer solution for 24 hours, take it out and react under nitrogen protection for 12 hours to obtain a double network gel composite separation membrane, and the reaction temperature is 40°C; The double network gel composite separation membrane is fully washed in de...

Embodiment 2

[0025] Mix 40% 2-allylmercaptonicotinic acid, 1% ethylene glycol dimethacrylate, 2% diphenyl ethyl ketone, and water to dissolve completely to obtain the first monomer solution; The percentage is 5% methacryloxyethyltrimethylammonium chloride, 5% ethylene glycol dimethacrylate, 1% ammonium persulfate and methanol / water (volume ratio 1 / 1) solution mixed , completely dissolved to obtain the second monomer solution; soak the polyethersulfone flat membrane in the first monomer solution for 24 hours, take it out and irradiate the cross-linking reaction under ultraviolet light for 20 minutes to obtain the first network gel composite separation membrane , the irradiation dose is 2×10 3 Joule / square meter; soak the first network gel composite separation membrane in the second monomer solution for 4 hours, take it out and react it under nitrogen protection for 2 hours to obtain a double network gel composite separation membrane, the reaction temperature is 80°C; The double network gel...

Embodiment 3

[0028] Mix 20% 4-vinylpyridine, 10% dimethyl diallyl ammonium chloride, 2% methyl benzoylformate and water / ethanol solution (volume ratio 1 / 1), Completely dissolve to obtain the first monomer solution; the mass percent is 20% 2-acrylamido-2-methylpropanesulfonic acid, 5% ethylene glycol dimethacrylate, 1% ammonium persulfate and water Mix and completely dissolve to obtain the second monomer solution; soak the polyvinyl chloride hollow fiber membrane in the first monomer solution for 12 hours, take it out and irradiate the cross-linking reaction under ultraviolet light for 10 minutes to obtain the first network gel composite Separation membrane, the irradiation dose is 5×10 3 Joule / square meter; soak the first network gel composite separation membrane in the second monomer solution for 4 hours, take it out and react it under nitrogen protection for 8 hours to obtain a double network gel composite separation membrane, and the reaction temperature is 60°C; The double network gel...

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Abstract

The invention discloses a preparation method of a composite separating film filled by an interpenetrating polymer network hydrogel. The preparation method comprises the following steps of firstly, soaking a polymer membrane into a first monomer solution, fetching out, radiating under ultraviolet rays, and crosslinking, so as to obtain a first network gel composite separating film; then, soaking the first network gel composite separating film in a second monomer solution, fetching out, and performing thermal-initiation crosslinking, so as to form the composite separating film filled by the interpenetrating polymer network hydrogel. The composite separating film filled by the interpenetrating polymer network hydrogel has the advantages that the function of adsorbing heavy metal ions is realized; the heavy metal ions in water can be effectively adsorbed in the filtering and separating process; the method is simple, the efficiency is high, the operation is easy, the cost is low, the industrial production is realized, and the property of adsorbing multiple metal ions of copper, lead, mercury, zinc, cadmium, nickel and the like is excellent; the preparation can be used for the treatment of industrial heavy metal sewage, and the removal of heavy metal ions in domestic drinking water.

Description

technical field [0001] The invention relates to a preparation method of a polymer microporous membrane, in particular to a preparation method of an interpenetrating network hydrogel-filled composite separation membrane. Background technique [0002] With the rapid development of industrial production, a large amount of heavy metal wastewater is directly or indirectly discharged into the environment. Heavy metals, such as copper, lead, mercury, zinc, cadmium, nickel, etc., are difficult to biodegrade and are easy to accumulate in organisms. Many heavy metal ions have been proven to be toxic or carcinogenic, causing great harm to human health and the environment. Therefore, the treatment of heavy metal pollution in water is urgent. [0003] At present, there are many methods for removing heavy metal ions from wastewater, mainly including chemical precipitation, ion exchange, adsorption and membrane filtration. These methods have inherent advantages and limitations. The chemi...

Claims

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Application Information

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IPC IPC(8): B01D67/00B01D69/12B01D61/14B01D69/06B01D69/08C08F222/36C08F226/02C08F222/14C08F228/02C08F220/34B01J20/26B01J20/30C02F1/44C02F1/28C02F101/20
Inventor 朱利平方传杰赵翌帆胡帆
Owner ZHEJIANG UNIV
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