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Ether bond bridged polysulfone sulfonated polyether sulfone, and preparation method and application thereof

A technology for sulfonating polyethersulfone and polysulfone groups, which is applied in the field of polymer materials, can solve the problems of few sulfonic acid groups and single structure, and achieve the effects of simple preparation process, easy structure adjustment, and high proton conductivity

Inactive Publication Date: 2018-04-13
南京黑泰催化剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, there is only one sulfone group in the repeating unit of sulfonated polyethersulfone reported in the literature, the structure is relatively simple, and there are few sites where sulfonic acid groups can be introduced, which limits its application to a certain extent.

Method used

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  • Ether bond bridged polysulfone sulfonated polyether sulfone, and preparation method and application thereof
  • Ether bond bridged polysulfone sulfonated polyether sulfone, and preparation method and application thereof
  • Ether bond bridged polysulfone sulfonated polyether sulfone, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: Synthesis of polysulfone group sulfonated polyethersulfone homopolymer Hp-1 bridged by ether bonds and preparation of proton exchange membrane

[0037] Under nitrogen protection and mechanical stirring, add 4,4'-bis(4-fluorobenzenesulfonyl-3-sodium sulfonate)diphenyl ether-2,2 17.88g (20mmol) of '-sodium disulfonate, 3.72g (20mmol) of 4,4'-diphenol, and 70-100mL of N,N-dimethylacetamide, preferably, the optimal addition of this example The volume is 90 mL. After the solid is completely dissolved, add 5.52-6.90g (40-50mmol) of potassium carbonate and 10-20mL of toluene. Preferably, the optimal addition amounts in this embodiment are 6.07g (44mmol) and 15mL respectively. After stirring evenly, raise the temperature of the reaction system to 120-140°C for 2-6 hours, evaporate the water generated in the reaction, and then raise the temperature to 140-170°C for 8-24 hours. Preferably, the two best The temperature points are 140°C and 160°C, and the two times are...

Embodiment 2

[0039] Example 2: Synthesis of polysulfone group sulfonated polyethersulfone homopolymer Cp-1-4 / 1 / 3 bridged by ether bonds and preparation of proton exchange membrane

[0040] Under nitrogen protection and mechanical stirring, add 4,4'-bis(4-fluorobenzenesulfonyl-3-sodium sulfonate)diphenyl ether-2,2 8.94g (10mmol) of '-sodium disulfonate, 7.62g (30mmol) of 4,4'-difluorodiphenyl sulfone, 7.44g (40mmol) of 4,4'-biphenyldiphenol and N,N-dimethyl Acetamide 80-120mL, preferably, the optimal addition amount of this embodiment is 100mL. After the solid is completely dissolved, 11.04-13.80 g (80-100 mmol) of potassium carbonate and 12-25 mL of toluene are added. Preferably, the optimal addition amounts in this embodiment are 11.59 g (84 mmol) and 18 mL respectively. After stirring evenly, raise the temperature of the reaction system to 120-140°C for 2-6 hours, evaporate the water generated in the reaction, and then raise the temperature to 140-170°C for 8-24 hours. Preferably, the t...

Embodiment 3

[0042] Example 3: Synthesis of polysulfone group sulfonated polyethersulfone homopolymer Cp-1-3 / 1 / 2 bridged by ether bonds and preparation of proton exchange membrane

[0043] Under nitrogen protection and mechanical stirring, add 4,4'-bis(4-fluorobenzenesulfonyl-3-sodium sulfonate)diphenyl ether-2,2 8.94g (10mmol) of '-sodium disulfonate, 5.08g (20mmol) of 4,4'-difluorodiphenyl sulfone, 5.58g (30mmol) of 4,4'-biphenyldiphenol and N,N-dimethyl Acetamide 65-98mL, preferably, the optimal addition amount of this embodiment is 80mL. After the solid is completely dissolved, add 8.28-10.35g (60-75mmol) of potassium carbonate and 8-16mL of toluene. Preferably, the optimal addition amounts in this embodiment are 8.83g (64mmol) and 12mL respectively. After stirring evenly, raise the temperature of the reaction system to 120-140°C for 2-6 hours, evaporate the water generated in the reaction, and then raise the temperature to 140-170°C for 8-24 hours. Preferably, the two best The tempe...

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Abstract

The invention discloses ether bond bridged polysulfone sulfonated polyether sulfone, and a preparation method of ether bond bridged polysulfone sulfonated polyether sulfone and a method for preparinga proton exchange membrane prepared from ether bond bridged polysulfone sulfonated polyether sulfone. A repeating unit of ether bond bridged polysulfone sulfonated polyether sulfone comprises at leasttwo ether bond bridged sulfone groups, the sulfonic acid groups are more concentrated, and the existence of sulfone groups can further reduce the proton conductivity of benzene rings in which the sulfonic acid groups are located, and increase the proton conductivity and hydrolysis resistance stability of the proton exchange membrane. The polymer obtained by the invention has higher molecular weight, excellent solubility and high thermal stability; the ether bond bridged polysulfone sulfonated polyether sulfone is simple in preparation process, easy to control reaction conditions and suitablefor industrial production. The proton exchange membrane prepared from ether bond bridged polysulfone sulfonated polyether sulfone, disclosed by the invention, has higher proton conductivity, and a single cell assembled by the proton exchange membrane has highcell performances.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polysulfone group sulfonated polyethersulfone bridged by ether bonds, a preparation method thereof, and a preparation method and application of a proton exchange membrane using the same as a raw material. Background technique [0002] The synthesis of sulfonated polyethersulfone can usually be obtained by post-sulfonation or direct polymerization of sulfonated monomers. The former has simple steps but is difficult to precisely control the degree of sulfonation of the polymer. The latter can precisely control the degree of sulfonation and pass The design attaches the sulfonic acid group to the benzene ring attached to the sulfone group. [0003] The degree of sulfonation of the polymer can be precisely controlled by direct polymerization of sulfonated monomers; in addition, the sulfonic acid group can be connected to the benzene ring connected to the sulfone group by design, and...

Claims

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Application Information

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IPC IPC(8): C08G75/23C08J5/22
CPCC08J5/2237C08G75/23C08J2381/06
Inventor 应黎彬翟凤霞陈康成房建华
Owner 南京黑泰催化剂有限公司
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