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Method for preparing polyethylene ion chelating membrane by radiation graft method

A technology of radiation grafting and polyethylene, applied in the field of radiation grafting chemistry and chemical industry, can solve the problems of limiting the amount of functional groups introduced, the grafting rate is low, and the purity of PE-g-GMA grafts is low, and achieves excellent chelation. Combined adsorption performance, simple operation, low cost effect

Inactive Publication Date: 2008-11-12
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purity of the PE-g-GMA graft prepared by this method is low, and the grafting rate is low, thereby limiting the introduction of functional groups

Method used

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  • Method for preparing polyethylene ion chelating membrane by radiation graft method
  • Method for preparing polyethylene ion chelating membrane by radiation graft method
  • Method for preparing polyethylene ion chelating membrane by radiation graft method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) at first preparation volume percentage is the GMA methanol solution of 5% as grafting liquid;

[0027] (2) Then the HDPE film is cleaned with acetone and dried to constant weight, and the weighed high-density polyethylene film is put into a polyethylene film bag, sealed and placed in an electron irradiation room for irradiation; The beam intensity is 5mA, and the total radiation dose is 150kGy;

[0028] (3) In the third step, the irradiated HDPE film and the cushion material polypropylene non-woven fabric are stacked together, rolled up on a glass rod, tied up and placed in a graft tube containing a methanol solution of GMA, Vacuumize and fill with nitrogen to seal, then place the graft tube in a 50°C constant temperature water-soluble tank, react for 90 minutes, and obtain a graft film with a graft rate of 185%; take the graft film out of the graft tube, and use Washing with N,N-dimethylformamide, followed by immersion in a mixed solution of methanol and tetrahydr...

Embodiment 2

[0031] (1) at first preparation volume percentage is the GMA methanol solution of 20% as grafting liquid;

[0032] (2) Then the HDPE film is cleaned with acetone and dried to constant weight, and the weighed high-density polyethylene film is put into a polyethylene film bag, sealed and placed in an electron irradiation room for irradiation; The beam intensity is 5mA, and the total radiation dose is 150kGy;

[0033] (3) In the third step, the irradiated HDPE film and the cushion material polypropylene non-woven fabric are stacked together, rolled up on a glass rod, tied up and placed in a graft tube containing a methanol solution of GMA, Vacuumize and fill with nitrogen to seal, then place the graft tube in a 50°C constant-temperature water-soluble tank, react for 60 minutes, and obtain a graft film with a graft rate of 225%; take out the graft film from the graft tube, and use Washing with N,N-dimethylformamide, followed by immersion in a mixed solution of methanol and tetrah...

Embodiment 3

[0036] (1) at first preparation volume percentage is the GMA methanol solution of 30% as grafting liquid;

[0037] (2) Then the HDPE film is cleaned with acetone and dried to constant weight, and the weighed high-density polyethylene film is put into a polyethylene film bag, sealed and placed in an electron irradiation room for irradiation; The beam intensity is 5mA, and the total radiation dose is 150kGy;

[0038] (3) In the third step, the irradiated HDPE film and the cushion material polypropylene non-woven fabric are stacked together, rolled up on a glass rod, tied up and placed in a graft tube containing a methanol solution of GMA, Vacuumize and fill with nitrogen to seal, then place the graft tube in a 50°C constant temperature water-soluble tank, react for 15 minutes, and obtain a graft film with a graft rate of 73%; take the graft film out of the graft tube, and use Washing with N,N-dimethylformamide, followed by immersion in a mixed solution of methanol and tetrahydr...

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Abstract

The invention discloses a making method of polyethylene ionic chelating film, which is characterized by the following: adopting high-density polyethylene membrane (HDPE) as frame; grafting non-toxic glycide methacrylic acid (GMA) on the film through electronic beam inducing pre-radiating grafting method; aminating to obtain the chelated film with amido; possessing excellent chemical and mechanic stability and coordination complexing ability for metal ion; reusing with large adsorbing content; fitting for recycling dear metal; purifying industrial waste water.

Description

technical field [0001] The invention relates to a method for preparing an ion chelating membrane, in particular to a method for preparing a polyethylene ion chelating membrane by using electron beams to initiate pre-radiation grafting. The invention belongs to the technical field of polymer material modification and the technical field of radiation grafting chemistry and chemical engineering. technical background [0002] The ion exchange membrane is an ion exchange material with active groups on the polymer chain of the basement membrane. According to the active group, it can be divided into cation exchange membrane, anion exchange membrane and chelating ion exchange membrane (referred to as chelating membrane). Ordinary anion and cation exchange membranes have quaternary ammonium groups, sulfonic acid groups and other groups on the base membrane, which can exchange with cations or anions. The chelate film is that there are N, O, S, P and other atoms with unbonded lone pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/22C08J7/18C08L23/06
Inventor 俎建华童龙士凌振刘新文孙贵生
Owner SHANGHAI UNIV
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