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Preparation method and application of grafted poly (sodium 4-styrenesulfonate) microporous filtration membrane

A technology of sodium styrene sulfonate and microporous membrane, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc. Simple preparation process and low cost effect

Active Publication Date: 2018-11-30
ZHONGBEI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods are not only complicated to operate, strict in requirements, and high in cost, but also the matrix membrane is often damaged to a certain extent during the installation process, especially the membrane prepared by high-energy radiation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] In a four-necked bottle, in 60 mL of ethanol, water and N,N- Add 0.1g chloromethylated polysulfone (CMPSF) to the mixed solvent of dimethylformamide (volume ratio 1:1:2) to swell for 2 h, then add 0.132 g HEDA and 0.127 g acid-binding agent Na 2 CO 3 , N 2 Under protection, stirring and constant temperature reaction at 80 °C for 6 h, precipitation with ethanol and distilled water and alternate washing of the precipitate, the PSF-DEA modified polysulfone membrane was prepared. Add 0.1 g of PSF-DEA modified polysulfone membrane to 75 mL N,N- Swell in a mixed solvent of dimethylformamide, ethanol and water (volume ratio 3:1:1) for 2 hours, add 9 g monomeric sodium p-styrene sulfonate (SSS) and 0.27 g initiator ammonium persulfate, DEA The graft polymerization of SSS on the surface of polysulfone was initiated in the redox initiation system composed of / APS, and the reaction was carried out at a constant temperature of 55 °C for 10 h to obtain a graft polymer film PSF-g-...

example 2

[0017] In a four-necked bottle, in 60ml ethanol, water and N,N- Add 0.1 g chloromethylated polysulfone (CMPSF) to the mixed solvent of dimethylformamide (volume ratio 1:1:2) to swell for 2 h, then add 0.132 g HEDA and 0.127 g acid-binding agent Na 2 CO 3 , N 2 Under protection, stirring and constant temperature reaction at 80 °C for 6 h, precipitation with ethanol and distilled water and alternate washing of the precipitate, the PSF-DEA modified polysulfone membrane was prepared. Add 0.1 g of PSF-DEA modified polysulfone membrane to 75 mL N,N- Swell in a mixed solvent of dimethylformamide, ethanol and water (volume ratio 3:1:1) for 2 hours, add 7g monomeric sodium p-styrene sulfonate (SSS) and 0.21 g initiator ammonium persulfate, DEA / APS The graft polymerization of SSS on the surface of polysulfone was initiated in the redox initiation system, and the reaction was carried out at a constant temperature at 60 °C for 8 h to obtain a grafted polymer film PSF-g-PSSS with a graf...

example 3

[0019] In a four-necked bottle, in 60ml ethanol, water and N,N- Add chloromethylated polysulfone (CMPSF) to the mixed solvent of dimethylformamide (volume ratio = 1:1:2) for swelling for 2 h, 0.132 g HEDA and 0.127 g acid-binding agent Na 2 CO 3 , N 2 Under protection, stirring and constant temperature reaction at 80 °C for 6 h, precipitation with ethanol and distilled water and alternate washing to prepare PSF-DEA modified polysulfone membrane. Add 0.1 g of PSF-DEA modified polysulfone membrane to 75 mL N,N- Swell in a mixed solvent of dimethylformamide, ethanol and water (volume ratio = 3:1:1) for 2 hours, add 11 g monomeric sodium p-styrene sulfonate (SSS) and 0.33 g initiator ammonium persulfate, DEA The graft polymerization of SSS on the surface of polysulfone was initiated in the redox initiation system composed of / APS, and the reaction was carried out at a constant temperature at 45 °C for 12 h to obtain a graft polymer membrane PSF-g-PSSS with a grafting degree of ...

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PUM

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Abstract

The invention relates to the field of filtration, adsorption and interception of heavy metal ions in a water system. A preparation method and application of grafted poly (sodium 4-styrenesulfonate) microporous filtration membrane are disclosed. Chloromethylated polysulfone, HEDA and acid-binding agent Na2CO3 are added to an ethanol, water and N, N-dimethylformamide mixed solvent for constant temperature stirring reaction, precipitation and drying to obtain a PSF-DEA modified polysulfone membrane; the PSF-DEA modified polysulfone membrane is added to the ethanol, water and N, N-dimethylformamide mixed solvent for swelling, then monomer sodium p-styrene sulfonate (SSS) and initiator ammonium persulfate (APS) are added, and a graft polymerization membrane is obtained by graft polymerization of the SSS on polysulfone surface in a redox initiator system composed of DEA / APS and constant temperature stirring reaction. The invention also relates to the application of the grafted poly (sodium 4-styrenesulfonate) microporous filtration membrane.

Description

technical field [0001] The invention relates to the field of filtration, adsorption and retention of heavy metal ions in water systems, in particular to the preparation and application of a microporous filter membrane for adsorption and retention of lead, zinc and mercury ions. Background technique [0002] Water pollution caused by heavy metal ions is a serious environmental problem. Most heavy metal pollution sources come from industrial wastewater. The toxicity and accumulation of heavy metal ions in water seriously endanger human health and the environment. In particular, the intake of lead can cause damage to the kidneys, nerves, and immune system; zinc is a micronutrient for cell growth and metabolism, but too much zinc can cause nervous system damage, kidney disease, and cancer; mercury can cause brain disease, nerve damage, Disorders of the renal and endocrine systems. Currently, removing these heavy metal ions from water is a serious task. So far, the removal of h...

Claims

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Application Information

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IPC IPC(8): B01D71/78B01D67/00C02F1/28C02F1/44C02F101/20
CPCB01D67/0002B01D67/0006B01D71/78C02F1/285C02F1/44C02F2101/20
Inventor 门吉英杜瑞奎安富强曹卫芳高保娇
Owner ZHONGBEI UNIV
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