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Chelate fiber ABTF and synthetic method thereof

A technology of chelating fibers and synthesis methods, which is applied in the direction of fiber types, fiber treatment, chemical instruments and methods, etc., can solve the problems of direct measurement of trace heavy metals and other problems, and achieve the effects of excellent regeneration performance, environmental protection, and wide source of raw materials

Inactive Publication Date: 2015-03-11
ZHEJIANG GONGSHANG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Modern analytical instruments have been greatly developed, but due to the matrix effect, the interference of a large number of coexisting elements, there are some difficulties in the direct determination of trace heavy metals

Method used

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  • Chelate fiber ABTF and synthetic method thereof
  • Chelate fiber ABTF and synthetic method thereof
  • Chelate fiber ABTF and synthetic method thereof

Examples

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Embodiment 1

[0032] Embodiment 1, a kind of method of synthetic chelating fiber ABTF, carry out following steps successively:

[0033] 1) Put about 20.0 mg of the matrix --- acrylic modified polytetrafluoroethylene fiber (PTFE-g-AA) in a 100 mL three-necked bottle, add 25 mL of toluene and soak for 8 hours;

[0034] Remarks: The content of PTFE-g-AA functional group (ie -COOH) in acrylic modified polytetrafluoroethylene fiber (PTFE-g-AA) is 3.07mmol / g.

[0035] 2) Add 0.184mmol of the ligand—2-aminobenzothiazole (that is, the molar ratio of PTFE-g-AA to the ligand is 1:3) into the three-neck flask, and stir at 70°C for 14 hours , the stirrer speed is 250rpm / min.

[0036] 3) Filter the product obtained in step 2), and wash the obtained filter cake with toluene, ether, and ethanol three times in sequence, and each time: the dosage of DMF, ether, and ethanol is 100ml;

[0037] Put the washed filter cake into a vacuum drying oven at a drying temperature of 40-60°C and dry to constant weight ...

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Abstract

The invention discloses a synthetic method of chelate fiber ABTF. The method comprises the following steps of: firstly, soaking crylic acid modified polytetrafluoroethylene fiber into methylbenzene for 7 hours to 9 hours with the crylic acid modified polytetrafluoroethylene fiber as a parent; secondly, adding ligand into material obtained in the first step, stirring and reacting for 12 hours to 16 hours at 60 to 80 DEG C, wherein 2-aminobenzothiazole is taken as the ligand, and the mole ratio of the parent to the ligand is (0.9-1.1):3; thirdly, filtering material obtained in the second step, washing a filter cake obtained, and drying to constant weight so as to obtain the chelate fiber ABTF. The chelate fiber ABTF obtained through the synthetic method has selective adsorption to lead ions, thereby overcoming the disadvantage that an original parent is poor in selective adsorption.

Description

technical field [0001] The invention relates to a method for synthesizing a new type of chelating fiber, in particular to using acrylic acid-modified polytetrafluoroethylene fiber as a matrix and using 2-aminobenzothiazole as a ligand to synthesize a fiber that can selectively adsorb several heavy metals Methods of Chelating Fiber ABTF. Background technique [0002] Fiber refers to a substance composed of continuous or discontinuous filaments, generally thin and long materials. The molecular weight of the fiber is generally very small, between 10,000 and 100,000. The characteristics of the fiber are high strength, high crystallization ability, and good elasticity. Usually, people refer to fine substances whose length is more than a thousand times larger than the diameter (a few microns or tens of microns) and have certain flexibility and strength as fibers. In animals and plants, fibers play an important role in maintaining tissues. The application of fibers is extremely ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/62D06M13/352D06M101/22
Inventor 熊春华何若铭吴扬姚彩萍
Owner ZHEJIANG GONGSHANG UNIVERSITY
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