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Polyarylether containing quaternary ammonium side group and its preparation method, and anion exchange membrane containing quaternary ammonium side group and its preparation method

A polyarylether and side group technology, applied in the field of polyarylether, can solve the problems of difficult control of the number of positions, high toxicity, difficulty in obtaining highly substituted chloromethylated polyarylether, etc., and achieve low water absorption and high ion conduction Effects that are easily controlled in rate, quantity and location

Active Publication Date: 2014-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, this preparation method has the following disadvantages: (1) It is difficult to control the position and quantity of the hydrogen on the benzene ring replaced by chloromethyl; Alkylation reaction to form intramolecular or intermolecular crosslinks, it is difficult to obtain highly substituted chloromethylated polyarylethers, and crosslinking will make polymers difficult to dissolve in organic solvents; (3) Traditional chloromethylation reagents (such as chloromethyl methyl ether) is a highly toxic and strong carcinogenic drug, which has certain dangers

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  • Polyarylether containing quaternary ammonium side group and its preparation method, and anion exchange membrane containing quaternary ammonium side group and its preparation method
  • Polyarylether containing quaternary ammonium side group and its preparation method, and anion exchange membrane containing quaternary ammonium side group and its preparation method
  • Polyarylether containing quaternary ammonium side group and its preparation method, and anion exchange membrane containing quaternary ammonium side group and its preparation method

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preparation example Construction

[0043] The preparation method of the polyarylene ether containing quaternary ammonium side group provided by the invention comprises the following steps:

[0044] (1) Under the condensation reaction conditions and in the presence of a catalyst, combine the bisphenol monomer having the structure shown in formula (5) with one of the halogen-containing compounds having the structure shown in formula (6)-(8) One or more reactions, so that the methoxy-containing polyarylether having the structure shown in formula (9) is obtained;

[0045] (2) Under the demethylation reaction conditions, the methoxy-containing polyarylether obtained in step (1) is reacted with a demethylation reagent, so that the phenolic hydroxyl-containing polyaryl ether having the structure shown in formula (10) is obtained Polyarylether;

[0046] (3) Under the conditions of the ring-opening reaction, react the phenolic hydroxyl-containing polyarylether obtained in step (2) with the epoxide having the structure ...

preparation example 1

[0082] This preparation example is used to illustrate the polyarylether containing quaternary ammonium side groups provided by the present invention and its preparation method.

[0083] (1) Add 0.025mol of 4-methoxyphenylhydroquinone, 0.025mol of decafluorobiphenyl and 0.03mol of anhydrous potassium carbonate into a three-necked flask equipped with mechanical stirring and a thermometer. Add 30mL of N-methylpyrrolidone and 15mL of toluene under nitrogen protection, and raise the temperature to 140°C for 4 hours, then distill off the toluene, then raise the temperature to 150°C for 2 hours, then pour the reaction solution into deionized water, Crush and filter the polymer with a pulverizer, then boil and wash the polymer with distilled water, filter, repeat 6 times, and dry in an oven to obtain a methoxy-containing polyarylether (Me-PAE), wherein the degree of polymerization n is 85 .

[0084] figure 1 It is the NMR spectrum of Me-PAE, in which, the signal peaks (that is, sign...

preparation example 2

[0092] This preparation example is used to illustrate the polyarylether containing quaternary ammonium side groups provided by the present invention and its preparation method.

[0093] (1) Add 0.025mol of 4-methoxyphenylhydroquinone, 0.025mol of 4,4′-difluorobenzophenone and 0.03mol of anhydrous potassium carbonate to a three-necked flask equipped with mechanical stirring and a thermometer middle. Add 30 mL of N-methylpyrrolidone and 15 mL of toluene under nitrogen protection, and raise the temperature to 140°C for 4 hours, then distill off the toluene, then raise the temperature to 190°C for 8 hours, then pour the reaction solution into deionized water, Crush and filter the polymer with a pulverizer, then wash the polymer with distilled water and filter, repeat 6 times, and then dry in an oven to obtain a methoxy-containing polyarylether (Me-PAEK), wherein the degree of polymerization n is 80 .

[0094] 1 H NMR analysis: the signal peak at the chemical shift of 6.0-8.0ppm...

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Abstract

The invention provides a polyarylether containing a quaternary ammonium side group and its preparation method, an anion exchange membrane preparation method, and an anion exchange membrane prepared through the anion exchange membrane preparation method. The polyarylether has a structure represented by formula (1); and in the formula (1), R1 is a C2-C5 alkylidene group with a hydroxy group, R2-R4 are C1-C5 alkyl groups, X is halogen, n is not lower than 2, Ar1 has one or more of structures represented by formula (2)-formula (4) respectively, and R5-R28 are H, halogen or C1-C5 alkyl groups respectively. The anion exchange membrane has the advantages of high ion conductivity, low water absorption and inhibited swelling.

Description

technical field [0001] The invention relates to a polyarylether containing quaternary ammonium side groups, a method for preparing the polyarylether containing quaternary ammonium side groups, a method for preparing anion-exchange membranes, and anion-exchange membranes prepared by the method. Background technique [0002] Fuel cell technology is a new energy technology that uses electrochemical reactions to convert chemical energy stored in fuel into electrical energy. Although the traditional proton exchange membrane fuel cell has the advantages of high energy conversion efficiency, high energy density, and environmental friendliness, its catalysts are relatively expensive metals, so the production cost is high, which greatly limits the industrialization of the battery. . In this regard, alkaline fuel cells with anion exchange membranes as electrolytes have obvious advantages, because their alkaline operating environment is conducive to improving the kinetics of electrode...

Claims

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Application Information

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IPC IPC(8): C08G65/48C08G65/40C08J5/22C08L71/12H01M8/10H01M8/02H01M8/1025H01M8/1072
CPCY02E60/50
Inventor 张杨刘轶群潘国元郭敏严昊
Owner CHINA PETROLEUM & CHEM CORP
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