Polyether sulphone containing plurality of quaternary ammonium salt phenyl side group structures and preparation method for polyether sulphone

A technology of polyaryl ether sulfone and quaternary ammonium salt, which is applied in the field of polymer anion exchange membrane and its preparation, can solve the problems that cannot meet the development needs of alkaline fuel cells, poor alkali resistance stability, and low ion conductivity, and achieve good Alkali-resistant stability, ionic conductivity, and effects of excellent dimensional stability

Active Publication Date: 2015-08-26
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the existing polymer anion exchange membranes are mainly polystyrene polymer membranes. The ion conductivity of this type of electrolyte membrane is very low, and the stability of alkali resistance is poor, which cannot meet the development needs of alkaline fuel cells. Therefore, further development of comprehensive properties Excellent new aromatic polymer electrolyte membrane material has important research significance and application value

Method used

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  • Polyether sulphone containing plurality of quaternary ammonium salt phenyl side group structures and preparation method for polyether sulphone
  • Polyether sulphone containing plurality of quaternary ammonium salt phenyl side group structures and preparation method for polyether sulphone

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Embodiment 1

[0021] (1) Preparation of polyaryl ether sulfone containing polymethyl structure

[0022] 1.0744g (1.6mmol) of 2,2'-bis[3,5-bis(3,5-dimethylphenyl )-4-fluorophenyl]sulfone (taking ionized structural unit content x=0.16 as an example), 2.1357g (8.4mmol) of 4,4'-difluorodiphenylsulfone monomer, 1.8621g (10mmol) of Hydroquinone, 1.3821g (10mmol) of potassium carbonate, 19ml of N-methylpyrrolidone and 4ml of toluene, after azeotropic dehydration at 130°C for 3h, further heated up to 160°C for co-condensation reaction for 10h, to end the reaction, the reaction solution was Pour into ethanol to obtain a polyarylethersulfone polymer (PAES-M-16) containing a polymethyl structure, with a yield of 99%; 1 H NMR (CDCl 3 ,400MHz) as attached figure 1 as shown in a.

[0023] (2) Preparation of polyaryl ether sulfone containing polybromomethyl structure

[0024] In a 100ml dry three-neck flask equipped with mechanical stirring and nitrogen protection, dissolve 1g of polyarylethersulfone...

Embodiment 2

[0028] (1) Preparation of polyaryl ether sulfone containing polymethyl structure

[0029] 1.0744g (1.6mmol) of 2,2'-bis[3,5-bis(3,5-dimethylphenyl )-4-fluorophenyl]sulfone (taking ionized structural unit content x=0.16 as an example), 2.1357g (8.4mmol) of 4,4'-difluorodiphenylsulfone monomer, 1.8621g (10mmol) of Hydroquinone, 1.3821g (10mmol) of potassium carbonate, 10ml of N-methylpyrrolidone and 5ml of toluene, after azeotropic dehydration at 150°C for 1h, further heated up to 170°C for co-condensation reaction for 6h, the reaction was terminated, and the reaction solution was Pour into ethanol to obtain polyaryl ether sulfone polymer containing polymethyl structure, the yield is 99%

[0030] (2) Preparation of polyaryl ether sulfone containing polybromomethyl structure

[0031] In a 100ml dry three-necked flask equipped with mechanical stirring and nitrogen protection, 1g of polymethyl-containing polyarylethersulfone polymer (PAES-M-16) was dissolved in 40g of 1,1,2,2-tet...

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Abstract

The invention provides polyether sulphone containing a plurality of quaternary ammonium salt phenyl side group structures. The preparation method for polyether sulphone comprises the following steps: firstly, producing copolycondensation of an active difluorosulphone monomer containing the polymethyl structure, 4,4'-difluorodiphenyl sulfone and biphenol to prepare polyether sulphone containing a polymethyl structure; secondly, converting prepared polyether sulphone containing the polymethyl structure into a polymer containing a bromomethyl structure by utilizing a bromination reaction; finally, by utilizing a nucleophilic substitution reaction, reacting the polymer containing the bromomethyl structure with trimethylamine to obtain polyether sulphone containing the plurality of quaternary ammonium salt phenyl side group structures. Polyether sulphone has good film-forming property; a prepared polymer thin film has good alkali resistance, relatively high ionic conductivity and excellent size stability, and can serve as an anion exchange membrane material for alkaline fuel cells.

Description

technical field [0001] The invention belongs to the field of polymer anion exchange membrane and its preparation, and in particular relates to a polyaryl ether sulfone with multiple quaternary ammonium salt benzene side group structures and a preparation method thereof. Background technique [0002] Polymer membrane fuel cell is a kind of important new energy battery, which has the characteristics of fast start-up, high energy density, green and environmental protection, and can be applied in transportation, fixed power station, portable power supply and other fields. Polymer membrane fuel cells mainly include proton exchange membrane fuel cells, alkaline fuel cells and phosphoric acid fuel cells. Compared with proton exchange membrane fuel cells, alkaline fuel cells have higher electrode reaction kinetics under alkaline working conditions, can use cheap non-precious metal catalysts, and have low risk of catalyst poisoning, etc., and have received more attention. Polymer an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/23C08J5/22
Inventor 汪称意沈斌徐常赵晓燕李坚任强
Owner CHANGZHOU UNIV
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