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Sulfonated high polymer containing bisphenol fluorine, synthesis and application thereof

A technology of sulfonated polymer and bisphenol fluorene, which is applied in the field of sulfonated polymer containing bisphenol fluorene and its synthesis and application, can solve the problems of decreased proton conductivity, complex synthesis route, and high preparation cost, and achieve Enhanced proton conductivity, increased acidity, and cost-effective effects

Inactive Publication Date: 2007-09-12
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Nafion membrane has disadvantages such as complex synthesis route, high preparation cost, low alcohol resistance coefficient, and sharp drop in proton conductivity due to water loss when the temperature is higher than 100 °C.

Method used

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  • Sulfonated high polymer containing bisphenol fluorine, synthesis and application thereof
  • Sulfonated high polymer containing bisphenol fluorine, synthesis and application thereof
  • Sulfonated high polymer containing bisphenol fluorine, synthesis and application thereof

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Experimental program
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Effect test

Embodiment 1-1

[0039] Embodiment 1-1, polymer 1RA 100 Synthesis:

[0040]Put 0.7008g (2mmol) bisphenol fluorene monomer 2a, 0.8466g (2mmol) sulfonated dihalogen monomer 3A, 0.3455g (2.5mmol) anhydrous potassium carbonate, 8mL DMSO and 10mL toluene into a three-necked flask, nitrogen protection Then, heat up to 150°C, keep it under magnetic stirring for 2 hours, use toluene to take out the water produced, then raise the temperature to 175°C, react for 20 hours, cool, and pour the reactant into 100mL of methanol with a volume ratio of 8:2 under constant stirring water mixed solution, filtered, washed three times with distilled water, and dried in vacuum at 80°C for 24 hours to obtain 1.3037g sodium sulfonated polymer 1RA 100 , yield 89%.

Embodiment 1-2

[0041] Embodiment 1-2, polymer 1RA 80 Synthesis:

[0042] With 0.7008g (2mmol) bisphenol fluorene monomer 2a, 0.6757g (1.6mmol) sulfonated dihalogen monomer 3A, 0.0873g (0.4mmol) dihalogen monomer 4A, 0.3455g (2.5mmol) anhydrous potassium carbonate, Add 8mL DMSO and 10mL toluene into a three-necked flask, under the protection of nitrogen, raise the temperature to 150°C, keep it under magnetic stirring for 2 hours, use toluene to take out the generated water, then raise the temperature to 175°C, react for 20 hours, cool down, and keep stirring The reactant was poured into 100 mL of methanol-water mixed solution with a volume ratio of 8:2, filtered, washed three times with distilled water, and dried in vacuum at 80°C for 24 hours to obtain 1.3045 g of sodium sulfonated polymer 1RA 80 , yield 94%.

Embodiment 1-3

[0043] Embodiment 1-3, polymer 1RA 60 Synthesis:

[0044] With 0.7008g (2mmol) bisphenol fluorene monomer 2a, 0.5068g (1.2mmol) sulfonated dihalogen monomer 3A, 0.1746g (0.8mmol) dihalogen monomer 4A, 0.3455g (2.5mmol) anhydrous potassium carbonate, Add 7mL DMSO and 10mL toluene into a three-necked flask, under the protection of nitrogen, raise the temperature to 150°C, keep it under magnetic stirring for 3 hours, use toluene to take out the generated water, then raise the temperature to 175°C, react for 20 hours, cool, and keep stirring The reactant was poured into 100 mL of methanol-water mixed solution with a volume ratio of 1:1, filtered, washed three times with distilled water, and vacuum-dried at 80°C for 24 hours to obtain 1.2185 g of sodium sulfonated polymer 1RA 60 , yield 94%.

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Abstract

The present invention relates to a sulfonated high polymer containing bisphenol fluorene, its synthesis and application. Said invention also provides its chemical structure formula. Its synthesis process includes the following steps: under the action of potassium carbonate utilizing bisphenol fluorene monomer, sulfonated dihalogen monomer and dihalogen monomer to make copolymerization reaction in polar aprotic solvent, and regulating mole ratio of sulfonated dihalogen monomer and dihalogen monomer to obtain the invented sulfonated high polymer containing bisphenol fluorene with defferent sulfonation degrees. It can be made into proton-exchange film which can be used in the field of fuel cell technology.

Description

technical field [0001] The invention relates to a kind of sulfonated high polymer containing bisphenol fluorene and its synthesis and application. technical background [0002] At present, energy and environmental issues are one of the focuses of the world. Since the middle of the 20th century, with the advancement of science and technology, the process of industrialization has accelerated, and the consumption of conventional energy has continued to accelerate. Due to the burning of conventional energy sources such as oil, natural gas, and coal, a large amount of harmful gases are released, such as carbon monoxide, carbon dioxide, sulfide, nitrogen oxides, etc., leading to the deterioration of the global environment. The greenhouse effect, damage to the ozone layer, and abnormal climate have affected people's lives. In all aspects, some areas were also attacked by acid rain and photochemical smog. [0003] Energy and environmental crisis are problems that must be overcome ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/40H01M8/10H01M8/1018
CPCY02E60/521Y02E60/50
Inventor 孟跃中陈玉林肖敏
Owner SUN YAT SEN UNIV
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