Poly (amide-thioamide) polymer, synthesis method and application thereof

A technology of thioamide and synthesis method, which is applied in the field of polymer chemical materials and achieves the effect of high molecular weight

Active Publication Date: 2021-12-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sulfur-containing polymers obtained by the multi-component polymerization method still have certain limitations in structure, and it is still necessary to develop new reaction methods to expand the types and structural diversity of polymers and reduce the reaction cost.

Method used

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  • Poly (amide-thioamide) polymer, synthesis method and application thereof
  • Poly (amide-thioamide) polymer, synthesis method and application thereof
  • Poly (amide-thioamide) polymer, synthesis method and application thereof

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preparation example Construction

[0053] The invention provides a kind of synthetic method of poly(amide-thioamide) polymer, comprises the following steps:

[0054] Under an inert gas environment, add difunctional amine monomer, maleic anhydride and elemental sulfur into an organic solvent to react to obtain a reaction liquid, dilute the reaction liquid, filter, and settle to obtain poly(amide-thioamide) polymer.

[0055] In the present invention, the molar ratio of the difunctional amine monomer, maleic anhydride and elemental sulfur is 1:0.5-1.95:1.5-6, preferably 1:0.8-1.8:2.0-5, more preferably 1:1.0:3.5.

[0056] In the present invention, the difunctional amine monomer comprises the following compounds:

[0057]

[0058] Wherein, n and k are integers of 1-20.

[0059] The difunctional amine monomer is preferably:

[0060]

[0061] The difunctional amine monomer is further preferably:

[0062]

[0063] In the present invention, the inert gas is preferably nitrogen and / or argon, more preferabl...

Embodiment 1

[0094] The reaction equation for polymer P1 is as follows:

[0095]

[0096] where P1 contains structure.

[0097] The synthetic steps of this polymer are as follows:

[0098] In a reactor filled with nitrogen, mix dimethyl sulfoxide, N,N-dimethylformamide and N-methylpiperidine in a mass ratio of 1:3:0.1, and then add them to a molar ratio of 1: 1:2.5 in p-xylylenediamine, maleic anhydride, and sublimed sulfur, dissolve it, and stir at room temperature for 15 minutes, then raise the temperature to 90° C., and stir for 16 hours.

[0099]After the reaction was completed, dimethyl sulfoxide was added thereto to dilute the reaction solution, and the temperature was cooled to room temperature. Thereafter, the reaction solution was passed through a glass dropper filled with cotton at a rate of 2 drops per second, and the residual sulfur was filtered, and then 100 mL of methanol as a precipitant was added to the filtrate. The polymer precipitated in methanol was filtered, ...

Embodiment 2

[0108] The reaction equation of polymer P2 is as follows:

[0109]

[0110] Among them, P2 contains structure.

[0111] The synthetic steps of this polymer are as follows:

[0112] In a reactor filled with argon gas, mix dimethyl sulfoxide, N,N-dimethylformamide and N-methylpiperidine in a mass ratio of 1:3:0.1, and then add them to a molar ratio of 1 : 1:2.5 in 4,4'-diaminodiphenylmethane, maleic anhydride and sublimed sulfur, dissolve it, stir at room temperature for 15 minutes, then raise the temperature to 90°C and stir for 6 hours;

[0113] After the reaction was completed, dimethyl sulfoxide was quickly added therein to dilute the reaction solution, and the temperature was lowered to room temperature. Thereafter, the reaction solution was passed through a glass dropper filled with cotton at a rate of 1 drop per second to filter the residual sulfur, and then 100 mL of methanol as a precipitant was added to the filtrate. The polymer precipitated in methanol was f...

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Abstract

The invention provides a poly (amide-thioamide) polymer, a synthesis method and application thereof, and belongs to the field of high polymer chemical materials. The polymer synthesis and sequence regulation method comprises the following steps: in an inert gas environment, adding a first difunctional amine monomer, maleic anhydride and elemental sulfur into an organic solvent, and reacting to obtain a reaction solution; and under the condition that sequence regulation is needed, adding a second difunctional amine monomer, reacting, and diluting, filtering and settling the reaction liquid to obtain poly (amide-thioamide) or sequence-controllable poly (amide-thioamide). According to the synthesis method disclosed by the invention, the poly (amide-thioamide) with a clear and regular structure can be obtained at a high yield while the molecular weight of the obtained polymer is high, and the poly (amide-thioamide) with various structures can be successfully and efficiently synthesized by multiple components through a one-pot method.

Description

technical field [0001] The invention relates to the technical field of polymer chemical materials, in particular to a poly(amide-thioamide) polymer and a synthesis method and application thereof. Background technique [0002] Sulfur-containing polymers with self-healing properties, metal ion coordination ability, high refractive index, heteroatom structure, and dynamic bonds have broad prospects for application in ion adsorption materials, optical materials, biological materials, and degradable materials. . At present, there are few reports on the synthesis of poly(amide-thioamide). Most of the existing synthesis methods of sulfur-containing polymers have many problems such as high raw material cost and difficulty in obtaining, harsh synthesis conditions and difficult operation, limited product structure, high toxicity of monomers or high toxicity of by-products, so sulfur-containing polymers are far from practical There is still a large distance in industrial production. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/42C09K11/06B01J20/26B01J20/30
CPCC08G69/42C09K11/06B01J20/262
Inventor 唐本忠胡蓉蓉黎丰霆秦安军赵祖金
Owner SOUTH CHINA UNIV OF TECH
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