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Amine-functionalized polymer material and preparation method and application thereof

A technology of polymer materials and functional polymers, applied in chemical instruments and methods, chemical/physical processes, and other chemical processes, can solve problems such as matrix interference and insufficient sensitivity, and achieve mild adsorption conditions, high application value, and low price. cheap effect

Pending Publication Date: 2022-06-07
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when analyzing environmental samples with complex matrices, existing analytical techniques often have a series of problems such as insufficient sensitivity and matrix interference.

Method used

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  • Amine-functionalized polymer material and preparation method and application thereof
  • Amine-functionalized polymer material and preparation method and application thereof
  • Amine-functionalized polymer material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 Preparation of amine functionalized polymer material

[0033] In this example, polyacrylonitrile, hydroxylamine hydrochloride, epichlorohydrin, and triethylenetetramine are used as synthetic raw materials to prepare amine-functionalized polymer materials. The synthetic route is shown in the accompanying drawings in the description. Figure 8 shown.

[0034] Specifically include the following steps:

[0035] (1) First, add 2.5 g of hydroxylamine hydrochloride crystals and 40.0 g of ultrapure water into a 100 mL three-necked round-bottomed flask, add 0.15 g of sodium carbonate under a nitrogen atmosphere, and heat with stirring until 70°C.

[0036] (2) Next, 1.3 g of dry polyacrylonitrile was added to the above reaction solution and reacted for 3 hours. After the sample was filtered, it was washed with ultrapure water until the pH of the filtrate was 7. Vacuum drying at 60°C yielded an aminated polyacrylonitrile (PAN-1).

[0037](3) 70mL of isopropanol and 1...

Embodiment 2

[0039] Example 2 Preparation of Amine Functionalized Polymer Materials

[0040] In this example, polyacrylonitrile, hydroxylamine hydrochloride, epichlorohydrin, and triethylenetetramine are used as raw materials to synthesize amine-functionalized polymer materials.

[0041] (1) First, add 4.0 g of hydroxylamine hydrochloride crystals and 40.0 g of ultrapure water into a 100 mL three-necked round-bottomed flask, add 0.24 g of sodium carbonate under a nitrogen atmosphere, and heat with stirring until 70°C.

[0042] (2) Next, 2.08 g of dry polyacrylonitrile was added to the above reaction solution and reacted for 3 hours. After the sample was filtered, it was washed with ultrapure water until the pH of the filtrate was 7. Vacuum drying at 60°C yielded an aminated polyacrylonitrile (PAN-1).

[0043] (3) 70mL of isopropanol and 2.4g of PAN-1 were added to the 250mL reaction flask, and then the epichlorohydrin-acetone solution (1.92g epichlorohydrin and 100mL acetone aqueous solu...

Embodiment 3

[0045] Example 3 Preparation of Amine Functionalized Polymer Materials

[0046] In this example, polyacrylonitrile, hydroxylamine hydrochloride, epichlorohydrin, and triethylenetetramine are used as raw materials to synthesize amine-functionalized polymer materials.

[0047] (1) First, add 5.0 g of hydroxylamine hydrochloride crystals and 40.0 g of ultrapure water into a 100 mL three-necked round-bottomed flask, add 0.3 g of sodium carbonate under nitrogen atmosphere, and heat with stirring until 70°C.

[0048] (2) Next, 2.6 g of dry polyacrylonitrile was added to the above reaction solution and reacted for 3 h. After the sample was filtered, it was washed with ultrapure water until the pH of the filtrate was 7. Vacuum drying at 60°C yielded an aminated polyacrylonitrile (PAN-1).

[0049] (3) Add 70 mL of isopropanol and 3 g of PAN-1 into the 250 mL reaction flask, and then add epichlorohydrin-acetone solution (2.4 g epichlorohydrin and 100 mL acetone aqueous solution with a...

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Abstract

The invention discloses an amine functionalized polymer material. The polymer material comprises the following elements in percentage by mass: 59.51% of C, 8.61% of H, 25.24% of N and 6.64% of O, the structural formula of the polymer is shown in the figure 7 of the specification. The functional polymer prepared by the invention has the characteristics of wide material sources, economy, environmental protection, easiness in modification, high adsorption efficiency and the like, and makes up for the defects of current commercially available solid-phase extraction materials. The functionalized polymer material prepared by the invention is applied to the field of heavy metal ion separation and analysis, and has the advantages of good selectivity, good stability, large adsorption capacity, simplicity in synthesis, suitability for a complex environment medium and the like. The composite material is used as a core filler of a solid-phase extraction column, 12 heavy metal ions such as vanadium, cadmium, manganese, iron, cobalt, nickel, copper, arsenic, tin, antimony, lead and bismuth in an enriched environmental water body can be efficiently and rapidly separated under mild conditions, the adsorption efficiency is 90% or above, and the composite material plays an important role in detection and analysis of heavy metals. The method is simple to operate, mild in reaction condition and high in adsorption efficiency. The method has an extremely high application value in pretreatment of environmental water samples.

Description

technical field [0001] The invention relates to the technical field of separation and analysis of inorganic pollutants, in particular to an amine-functionalized polymer material with simple synthesis and environmental protection, and a preparation method and application thereof. The functionalized polymer material can simultaneously separate and enrich various heavy metal ions in environmental water. Background technique [0002] Due to socio-economic development and urban expansion, human activities lead to an increase in heavy metal levels in the environment. Heavy metal pollution is mainly manifested in the water environment. Heavy metals discharged from industrial wastewater to the environment pose a serious toxicological threat to the human body and ecosystem. Therefore, it is of great significance to develop new technologies for rapid and effective separation and removal of heavy metals in polluted water. However, when analyzing environmental samples with complex mat...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30B01D15/08
CPCB01J20/265B01D15/08
Inventor 贾晓宇赵峻谊
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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