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Hyperbranched polythioamide compound as well as preparation method and application thereof

A technology of polythioamides and compounds, which is applied in the fields of polymer chemistry and materials science, can solve problems such as high cost, long production cycle, and large intermolecular distance, so as to improve adsorption effect and adsorption rate, reduce reaction time, and improve The effect of reaction rate

Active Publication Date: 2019-08-30
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these traditional methods for enriching gold elements have certain disadvantages: cyanide is very toxic, and the environmental protection cost caused by using the cyanide process to extract gold is relatively high; the cyanide leaching time in the process of carbon pulp gold extraction is relatively Long, the overall production cycle is long, and the infrastructure required by the carbon slurry process is expensive; the activated carbon in the carbon leaching method is easy to be severely worn, resulting in excessive gold loss
[0003] The application of linear polythioamide compounds has been reported in the literature. Polythioamide can adsorb metal ions because of the certain coordination between the N and S atoms on the thioamide group and metal ions in the molecular structure. , but due to the large intermolecular distance of traditional linear polythioamides, the combination of N and S atoms on the thioamide groups is not tight enough. In addition, the monomer reaction time of linear polymers is longer and the solubility It is too sensitive to molecular weight, so the adsorption effect on metal ions can be further improved

Method used

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  • Hyperbranched polythioamide compound as well as preparation method and application thereof
  • Hyperbranched polythioamide compound as well as preparation method and application thereof
  • Hyperbranched polythioamide compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A kind of hyperbranched polythioamide compound, its structural formula is as shown in hb-P1:

[0053]

[0054] The hyperbranched polythioamide compound is prepared by the direct reaction of alkynes, amines and elemental sulfur, and the reaction equation is as shown in formula (1):

[0055]

[0056] Among them, monomer 1 is sublimated sulfur, purchased from Guangzhou Chemical Reagent Factory; monomer 2 is tris(4-ethynylphenyl)amine, purchased from Anaiji Company; monomer 3 is 1,4-xylylenediamine, Purchased from Anaiji Company.

[0057] The preparation steps of described hyperbranched polythioamide compound are as follows:

[0058]Add 96.2mg (3.0mmol) of monomer 1 and 158.7mg (0.5mmol) of monomer 2 to a 25ml polymerization tube, vacuumize and change nitrogen for 3 times, inject 1.0mL of ultra-dry pyridine with a syringe, and heat up to 100°C. After monomer 2 is completely dissolved, add 0.162mL monomer 3 (monomer 3 is 153.2mg, 1.125mmol) with a syringe, keep the t...

Embodiment 2

[0061] A kind of hyperbranched polythioamide compound, its structural formula is as shown in hb-P2:

[0062]

[0063] The hyperbranched polythioamide compound is prepared by the direct reaction of alkyne, amine and elemental sulfur, and the reaction equation is as shown in formula (2):

[0064]

[0065] Among them, monomer 1 is sublimated sulfur, purchased from Guangzhou Chemical Reagent Factory; monomer 4 is 1,4-diethynylbenzene, purchased from Anaiji Company; monomer 5 is tris(3-aminopropyl)amine, Purchased from Anaiji Company.

[0066] The preparation steps of described hyperbranched polythioamide compound are as follows:

[0067] Add 141.9mg (1.125mmol) of monomer 4 and 96.2mg (3mmol) of monomer 1 to a 25ml polymerization tube in turn, vacuumize and change nitrogen for 3 times, inject 1.0mL of ultra-dry pyridine with a syringe, heat up to 80°C, wait After monomer 4 was completely dissolved, finally add 0.099mL of monomer 5 (monomer 5 is 94.2mg, 0.5mmol) with a syri...

Embodiment 3

[0070] A kind of hyperbranched polythioamide compound, its structural formula is as shown in hb-P3:

[0071]

[0072] The hyperbranched polythioamides are prepared by the direct reaction of alkynes, amines and elemental sulfur, and the reaction equation is shown in formula (3):

[0073]

[0074] Among them, monomer 1 is sublimated sulfur, purchased from Guangzhou Chemical Reagent Factory; monomer 6 is tetrakis (4-ethynylbenzene) ethylene, purchased from Anaiji Company; monomer 7 is 1,4-xylylenediamine, Purchased from Anaiji Company.

[0075] The preparation steps of described hyperbranched polythioamide compound are as follows:

[0076] 128.2 mg (4.0 mmol) of monomer 1 and 214.3 mg (0.5 mmol) of monomer 6 were sequentially added into a 25 ml polymerization tube, vacuumed and replaced with nitrogen for 3 times, 1.0 mL of ultra-dry pyridine was injected with a syringe, and the temperature was raised to 100 °C. After monomer 6 is completely dissolved, add 0.180mL monomer ...

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Abstract

The invention discloses a hyperbranched polythioamide compound as well as a preparation method and application thereof. The preparation method of the hyperbranched polythioamide compound comprises thefollowing steps: in the presence of nitrogen or an inert gas, by taking an organic solvent I as a reaction medium, uniformly mixing a polyalkyne compound, a polyamine compound and elemental sulfur, carrying out a polymerization reaction at 80-120 DEG C, and carrying out purification, so as to obtain the hyperbranched polythioamide compound. The preparation method disclosed by the invention is easy in reaction raw material obtaining, gentle in polymerization condition, simple in process and high in polymerization efficiency. The hyperbranched polythioamide compound is applied to fields of goldion adsorption and photoelectric devices.

Description

technical field [0001] The invention belongs to the field of polymer chemistry and material science, and in particular relates to a hyperbranched polythioamide compound and its preparation method and application. Background technique [0002] The methods currently used to enrich gold elements in sewage mainly include cyanidation method, carbon slurry method, carbon leaching method, thiosulfate method, thiourea method, etc. However, these traditional methods for enriching gold elements have certain disadvantages: cyanide is very toxic, and the environmental protection cost caused by using the cyanide process to extract gold is relatively high; the cyanide leaching time in the process of carbon pulp gold extraction is relatively Long, the overall production cycle is long, and the infrastructure construction cost required by the carbon slurry process is high; the activated carbon in the carbon leaching method is easy to be severely worn, resulting in excessive gold loss. There...

Claims

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Application Information

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IPC IPC(8): C08G83/00C02F1/28
CPCC08G83/005C02F1/285
Inventor 唐本忠胡蓉蓉刘尚润谢事晋邓晓锋秦安军赵祖金
Owner SOUTH CHINA UNIV OF TECH
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