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Perfluorosulfonic acidcontaining polyarylethersulfone proton exchange membrane material and preparation method thereof

The technology of perfluorosulfonic acid polyarylene ether and fluorosulfonic acid polyarylene ether is applied in the field of polyaryl ether sulfone polymer proton exchange membrane material and its preparation, and can solve the problems of high price, low α-relaxation temperature and the like, Achieve the effects of low mechanical properties, excellent mechanical properties, and high proton conductivity

Inactive Publication Date: 2011-09-07
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the practical application of these polymers is limited by the high price and low α-relaxation temperature (approximately 100 °C)

Method used

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  • Perfluorosulfonic acidcontaining polyarylethersulfone proton exchange membrane material and preparation method thereof
  • Perfluorosulfonic acidcontaining polyarylethersulfone proton exchange membrane material and preparation method thereof
  • Perfluorosulfonic acidcontaining polyarylethersulfone proton exchange membrane material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Preparation of polyarylethersulfone containing 50% bromophenyl side groups (1)

[0027] 1.3255 grams of 2-(4'-bromophenyl)-1,4-hydroquinone monomer (m=0.005mol), 0.5506 grams of 1,4-hydroquinone monomer (n=0.005mol), 2.8716 grams of 4,4'-dichlorodiphenyl sulfone monomer (p=0.01mol) and 1.6585 grams of anhydrous potassium carbonate, 19 mL of sulfolane, and 10 mL of dehydrating agent (toluene or xylene) are put into a nitrogen through-hole, mechanical In the three-necked flask with stirring and water device, pass nitrogen gas, start stirring, raise the temperature to the reflux of the azeotropic dehydrating agent, react for 1 to 3 hours, remove the azeotropic dehydrating agent, raise the temperature to 190-210°C and continue the reaction for 7-10 hours; Then the obtained polymer solution was precipitated in deionized water, pulverized, washed, and dried to obtain 4 g of white polyarylethersulfone polymer powder with bromophenyl side groups.

[0028] The polyar...

Embodiment 2

[0034] Embodiment 2: the preparation (2) of polyaryl ether sulfone containing 100% bromophenyl side group

[0035] 2.6510 grams of 2-(4'-bromophenyl)-1,4-hydroquinone monomer (m=0.01mol), 2.8716 grams of 4,4'-dichlorodiphenyl sulfone monomer (p=0.01mol ) and 1.6585 grams of anhydrous potassium carbonate, 23mL sulfolane, and 12mL dehydrating agent (toluene or xylene) are put into a three-necked flask equipped with a nitrogen through hole, a mechanical stirrer and a water dispenser, nitrogen gas, stirring, and heating to a total temperature of Boil the dehydrating agent to reflux, react for 1-3 hours, remove the azeotropic dehydrating agent, raise the temperature to 190-210°C and continue the reaction for 7-10 hours; then precipitate the obtained polymer solution in deionized water, pulverize, wash and dry , to obtain 4 g of white polyaryl ether sulfone polymer powder with bromophenyl side groups.

[0036] The molecular formula is as follows:

[0037]

[0038] n=200-207.

...

Embodiment 3

[0043] Embodiment 3: the preparation (3) of polyaryl ether sulfone containing bromobenzene side group

[0044] 2-(4'-bromophenyl)-1,4-hydroquinone in Example 1 and 2 is replaced with 2-(2'-bromophenyl)-1,4-hydroquinone or 2 -(3'-Bromophenyl)-1,4-hydroquinone can also be used to obtain polyarylethersulfone polymers containing bromophenyl side groups.

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Abstract

The invention discloses a perfluorosulfonic acidcontaining polyarylethersulfone proton exchange membrane material and a preparation method as well as application thereof, belonging to the field of high molecular materials. The proton exchange membrane film is a polymer which consists of a polyarylethersulfone main chain and a 1,1,2,2-tetrafluoro-2-(1,1,2,2-tetrafluoro-2-phenylethyoxyl) ethane sulfonic acid side chain. The method comprises the following steps of: synthesizing para-bromophenyl lateral group containing polyarylethersulfone; performing halogen decoupling on the para-bromophenyl lateral group containing polyarylethersulfone and 1,1,2,2-tetrafluoro-2-(1,1,2,2-tetrafluoro-2-iodoethyoxyl) ethane potassium sulfonate under the action of copper; and performing hydrochloric acid treatment to obtain the perfluorosulfonic acid containing polyarylethersulfone proton exchange membrane material. Since a perfluorosulfonic acid serving as a super acid is introduced, meanwhile, a benzene ring is introduced between the polyarylethersulfone main chain and the perfluorosulfonic acid side chain, the proton exchange membrane has higher proton conductivity at the temperature of 80 DEG C and a necessary foundation is provided for preparing the proton exchange membrane with low swelling property and high proton conductivity.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polyaryl ether sulfone polymer proton exchange membrane material containing perfluorosulfonic acid in its side chain and a preparation method thereof. technical background [0002] Proton exchange membrane fuel cells (PEMFC) have been proposed as a clean energy source for the future, in which a cell is formed when oxonium ions and oxygen react at the cathode. To react efficiently, oxonium ions must pass through a proton exchange membrane with little resistance. At present, the most studied ones are sulfonated polyarylether sulfone and sulfonated polyarylether ketone polymers. However, to achieve high proton conductivity, this kind of polymer requires a high degree of sulfonation. However, the degree of sulfonation Higher will cause the membrane to swell easily and lose its mechanical properties; the most commonly used proton exchange membranes are aliphat...

Claims

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Application Information

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IPC IPC(8): C08L81/06C08G75/23C08J5/22H01M8/02H01M2/16
CPCY02E60/12Y02E60/50
Inventor 姜振华李雪峰王永鹏张海博张静静庞金辉
Owner JILIN UNIV
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