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Crosslinked polyalcohol membrana body material, method for producing the same and process of using

A polymer film and main material technology, applied in chemical instruments and methods, water pollutants, water/sludge/sewage treatment, etc., can solve the problems of practical application inconvenience, environmental pollution, lack of strength, etc., and achieve novel structure, Effects that are easy to apply

Inactive Publication Date: 2008-07-16
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: the dye molecules need to be phase-transferred into the polymer of the organic phase, the use of a large amount of toxic organic solvents is easy to cause environmental pollution, and the subsequent separation of host-guest molecules is difficult.
The disadvantage is that in the process of encapsulating metal ions and preparing metal nanoparticles, it is necessary to add reducing reagents, which is not conducive to environmental protection and energy saving.
In addition, due to the lack of strength of hyperbranched polymers, it is generally difficult to make stable membrane materials for use. In the process of encapsulating guest molecules, they need to be formulated into polymer solutions for use, and the separation of products is difficult, which brings great difficulties to practical applications. so much inconvenience

Method used

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  • Crosslinked polyalcohol membrana body material, method for producing the same and process of using
  • Crosslinked polyalcohol membrana body material, method for producing the same and process of using

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Feed N,N-methylenebisacrylamide and 1-(2-aminoethyl)piperazine in a molar ratio of 2:1, polymerize in deionized water at 50°C for 150 hours, wash with acetone precipitation, and Dry under vacuum to obtain hyperbranched polyamidoamine containing terminal double bonds. Weigh 2.0 g of the obtained end-containing hyperbranched polyamidoamine, and make it into a 10wt% aqueous solution, add nitric acid (15.9mol / L) dropwise to the pH of the solution=3.0, and add 20mL of 20% by mass concentration dropwise. Lithium trifluoromethanesulfonate aqueous solution was stirred and reacted at room temperature for 2 hours, left to stand overnight, and the precipitate at the bottom was collected, washed with water repeatedly, and dried to obtain a white powdery polymer. Make this white powdery polymer into an acetone solution with a concentration of 5% by volume, take 4mL and slowly pour it on a 10×10cm horizontal clean glass plate, wait for the solvent to evaporate completely, and conduct...

Embodiment 2

[0053] 0.2g of the cross-linked polymer film based on N,N-methylenebisacrylamide and 1-(2-aminoethyl)piperazine was immersed in 0.3g / L of Enier red A-2BF dyestuff In the aqueous solution, the dosage of the polymer film is 1g film / L dyeing solution. When the system was left standing at room temperature, the dye was gradually enriched by the polymer membrane. After 48 hours, the dye enrichment efficiency reached 99.3%, and the dye solution became colorless. The dye-enriched polymer membrane was taken out, rinsed with water, immersed in 50 mL of concentrated ammonia water, and left at room temperature for 12 hours. The dye was gradually released from the polymer membrane into the solution to obtain a regenerated membrane. The regenerated membrane was reused 4 times, and the enrichment efficiency of Enier Red A-2BF was still 98.5%.

Embodiment 3

[0055] The 0.2g based on N,N-methylenebisacrylamide and N-methyl-1,3-propanediamine obtained cross-linked polymer film (amide group, methylene, protonated tertiary amine and The weight percentage content of trifluoromethanesulfonate group is respectively 19%, 18%, 3%, 60%) immersed in the methyl orange aqueous solution of 0.2g / L, and the film dosage is 1g film / L dye liquor. When the system was allowed to stand at room temperature, methyl orange was gradually enriched by the polymer membrane, and after 48 hours, the enrichment efficiency of methyl orange reached 99.2%, and the solution became colorless. The polymer membrane enriched with methyl orange was taken out, rinsed with water, immersed in 50mL of concentrated ammonia water, and left at room temperature for 12 hours, methyl orange was gradually released from the polymer membrane into the solution, and a regenerated membrane was obtained. The regenerated membrane was reused 4 times, and the enrichment efficiency of the me...

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Abstract

The invention relates to a main material of a crosslinking polymer film in the technical field of high molecular material and a preparation method and a using method thereof. Through Michael addition polymerization, the invention obtains hyper branched polyamide containing an end double bond. By the protonation of a tertiary amine unit, the introducing of anion ligand and thermal initiation and self crosslinking of the end double bond, the main material of the crosslinking polymer film can be prepared. The components of the material the contents of the weight percentage are as follows: 12 to 19wt percent of amide group, 17 to 29wt percent of methylene, 2 to 3wt percent of protonated tertiary amine and 52 to 66wt percent of fluoroform sulfonate radical. The material of the invention can not only efficiently enrich object dye molecules from an aqueous solution, but also can efficiently enrich precious metal ions from the aqueous solution and restore the metal ions to be internally embedded metal nanoparticles in position. The invention has simple operation and is environment friendly; therefore, the invention can be applied to the treatment of waste water containing dye, the recycling of precious metal or metal-catalyzing and other fields.

Description

technical field [0001] The invention relates to a material in the technical field of polymer materials and a preparation method and a use method thereof, in particular to a hyperbranched polymer-based cross-linked polymer film main body material and a preparation method and a use method thereof. Background technique [0002] In recent years, due to the broad application prospects of host-guest materials in molecular recognition, self-assembly processes, chemical sensors, etc., people's research interest in them is increasing day by day. So far, a large number of host-guest systems based on cyclodextrins, crown ethers, amphiphilic block polymers, and dendrimers have been deeply explored by the academic community. Recently, host-guest systems based on hyperbranched polymers have also attracted attention. Hyperbranched polymer molecules not only have a three-dimensional branched structure, but also contain many functional groups and internal cavities. These unique structural f...

Claims

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Application Information

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IPC IPC(8): C08G73/06C08J5/18C02F1/00C02F1/70C02F101/20
Inventor 张永文黄卫周永丰颜德岳
Owner SHANGHAI JIAO TONG UNIV
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