Polyethylene-methacrylic acid-polyethylene polyamine fiber and method for preparing same

A polyethylene polyamine fiber and methacrylic acid technology, which is applied in fiber treatment, chemical instruments and methods, and other chemical processes, can solve the problems of low amine content, cumbersome preparation process, and difficult source of hair fiber material matrix. Achieve the effects of increased amino group content, simple synthesis process steps, and low raw material prices

Active Publication Date: 2015-01-14
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to foreign literature reports, the matrix source of animal hair fiber materials is not easy, and the adsorption effect on heavy metals is not as ideal as described, and the amine-modified fibrous emergency adsorption materials in the existing invention patents have low amine group content and no porous structure and preparation. The process is cumbersome and other defects. The present invention provides a polyethylene-methacrylic acid-polyethylene polyamine fiber and its preparation method, which adopts one-step foaming polymerization reaction to prepare a new type of porous and fibrous adsorption material with high amine group content.

Method used

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  • Polyethylene-methacrylic acid-polyethylene polyamine fiber and method for preparing same
  • Polyethylene-methacrylic acid-polyethylene polyamine fiber and method for preparing same
  • Polyethylene-methacrylic acid-polyethylene polyamine fiber and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Use 5g of PE and add 200ml of ethanol to extract in a Soxhlet extractor for 4 hours, put it in a 3-neck bottle after drying, add 100ml of DMF, and swell at 30 degrees Celsius for 4 hours. Add reactive emulsion, PE fiber, reactive emulsion and initiator ratio are as follows:

[0037]

[0038] Heated in a water bath at 85°C, and stirred at a speed of 60r / min for 12 hours. The PE-MA-N obtained from the reaction was subjected to solid-liquid separation, washed with acetone, and dried in the air. Vacuum drying at 50°C to obtain a finished polyethylene-methacrylic acid-polyvinylamine fiber. Its physical and chemical properties are as follows:

[0039]

Embodiment 2

[0041] Use 5g of PE and add 200ml of ethanol to extract in a Soxhlet extractor for 4 hours, put it in a 3-neck bottle after drying, add 100ml of DMF, and swell at 30 degrees Celsius for 4 hours. Add reaction emulsion, the addition of each component in the reaction emulsion is as follows:

[0042]

[0043] Heated in a water bath at 90°C, and stirred at a speed of 60r / min for 18 hours. The PE-MA-N obtained from the reaction was subjected to solid-liquid separation, washed with acetone, and dried in the air. Vacuum drying at 50°C to obtain the finished polyethylene-methacrylic acid-polyvinylamine fiber of the porous fibrous absorbent material, whose physical and chemical properties are as follows:

[0044]

Embodiment 3

[0046] Use 5g of PE and add 200ml of ethanol to extract in a Soxhlet extractor for 4 hours, put it in a 3-neck bottle after drying, add 100ml of DMF, and swell at 30 degrees Celsius for 4 hours. Add reaction emulsion, each component add-on in reaction emulsion is as follows:

[0047]

[0048]

[0049] Heated in a water bath at 95°C, and stirred at a speed of 60r / min for 24 hours. The PE-MA-N obtained from the reaction was subjected to solid-liquid separation, washed with acetone, and dried in the air. Vacuum drying at 50° C. to obtain the finished polyethylene-methacrylic acid-polyvinylamine fiber of the porous fibrous absorbent material. Its physical and chemical properties are as follows:

[0050]

[0051] The prepared fiber molecular formula is as follows figure 1 ,Such as Image 6 Among them, the fiber skeleton is polyethylene-methacrylic acid, the '-CH-' (2) of methacrylic acid is connected with the '-CH-' (1) of polyethylene chain, and the connection point of...

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Abstract

The invention discloses a polyethylene-methacrylic acid-polyethylene polyamine fiber and a method for preparing the same, and belongs to the field of environmental material synthesis and application. Polyethylene fiber is taken as a base material, methacrylic acid and polyethylene polyamine are taken as monomers, and a porous fibrous adsorbing material is produced through foaming polymerization reaction. The synthesis method is simple, raw materials are low in price, the prepared porous fibrous adsorbing material has a porous structure and a hydrophilic surface, heavy metal ions in water can be quickly and efficiently removed through the action of surface amino, the time for the equilibrium adsorbing of divalent heavy metal ions of cadmium, lead, copper and the like is less than 30 minutes, the adsorbed fiber is easy to recycle and can be repeatedly used after regeneration and the polyethylene-methacrylic acid-polyethylene polyamine fiber is suitable for quickly removing the heavy metal ions in the water / wastewater.

Description

Technical field: [0001] The invention discloses an amino-modified porous chelating fiber based on a high-molecular polyethylene fiber and a preparation method thereof, more specifically based on a polyethylene-methacrylic acid-polyethylene polyamine fiber and a preparation method thereof . Background technique: [0002] In recent years, my country's heavy metal water pollution has become increasingly serious, especially heavy metal ions such as lead and cadmium have caused serious damage to the ecological environment. How to quickly and efficiently remove heavy metal ions such as lead and cadmium in water / wastewater has become a hot issue in the field of water pollution control research. Resin-based adsorbents based on polymer materials have the advantages of large adsorption capacity, adjustable structure, and easy regeneration, and are widely used in the field of wastewater treatment. The use of fibers as adsorbent materials in the disposal of sudden environmental polluti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F1/62D06M14/10D01D5/247
Inventor 王津南程澄杨欣陈晨
Owner NANJING UNIV
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