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Polysulfone with sulfonated lateral chain and preparation method thereof

A sulfonation, side chain technology, applied in fuel cell parts, battery pack parts, electrical components, etc., can solve the problems of complex purification of polymer products and harsh polymerization conditions.

Active Publication Date: 2013-05-08
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the coupling polymerization of aryl dihalogen monomers described in this patent must be carried out in the presence of a large amount of metal reducing agents, metal catalysts and ligands. The polymerization conditions are harsh and the purification of polymerization products is complicated.

Method used

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  • Polysulfone with sulfonated lateral chain and preparation method thereof
  • Polysulfone with sulfonated lateral chain and preparation method thereof
  • Polysulfone with sulfonated lateral chain and preparation method thereof

Examples

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Effect test

Embodiment 1

[0052] 0.01 mole of 2,2`-bis(3-sulfonated propoxy)biphenyl disodium, 1.00 mole of 4,4`-diphenyl ether disulfonic acid, 0.99 mole of 2,2`-dimethyl Add oxybiphenyl and 4 liters of Eaton's reagent into a nitrogen-gassed reaction bottle, stir and react at 80°C for 48 hours, pour the reaction liquid into a large amount of deionized water while hot to obtain a polymer precipitate, filter and wash repeatedly with deionized water until the filtrate is neutral, soak the obtained polymer with 0.1mol / L dilute hydrochloric acid at room temperature for 24 hours, then wash repeatedly with deionized water until the washing solution is neutral, and vacuum dry to obtain H + Polymers with side chains containing sulfonic acid groups in the form of polymers. In the infrared spectrum at 1310cm -1 with 1150cm -1 Strong stretching vibration peaks of sulfone groups appear on the left and right, indicating the occurrence of sulfone-based polymerization reaction; H NMR spectrum confirms that the stru...

Embodiment 2

[0057] 0.01 mole of 2,2'-bis(3-sulfonated propoxy)biphenyl disodium was synthesized according to the method of Example 1, 1.00 mole of 4,4'-diphenyl ether disulfonic acid, 0.99 mole Add 2,2`-dimethoxybiphenyl and 4 liters of Eaton's reagent into a nitrogen-gassed reaction flask, stir and react at 120°C for 24 hours, pour the reaction solution into a large amount of deionized water while it is hot to obtain a polymer precipitate, filter And wash repeatedly with deionized water until the filtrate is neutral, soak the obtained polymer with 0.1mol / L dilute hydrochloric acid at room temperature for 24 hours, then repeatedly wash with deionized water until the washing liquid is neutral, and vacuum dry to obtain H + Polymers with side chains containing sulfonic acid groups in the form of polymers. In the infrared spectrum at 1310cm -1 with 1150cm -1 Strong stretching vibration peaks of sulfone groups appear on the left and right, indicating the occurrence of sulfone-based polymeriz...

Embodiment 3

[0059] In turn, 0.01 moles of 2,2`-bis(3-sulfonated propoxy)biphenyl disodium were synthesized according to the method of Example 1, 1.00 moles of 4,4`-diphenyl ether disulfonic acid, 0.99 moles Add 2,2,-dimethoxybiphenyl and 4 liters of Eaton's reagent into a nitrogen-gassed reaction bottle, stir and react at 130°C for 10 hours, pour the reaction solution into a large amount of deionized water while it is hot to obtain a polymer precipitate, filter And wash repeatedly with deionized water until the filtrate is neutral, soak the obtained polymer with 0.1mol / L dilute hydrochloric acid at room temperature for 24 hours, then repeatedly wash with deionized water until the washing liquid is neutral, and vacuum dry to obtain H + Polymers with side chains containing sulfonic acid groups in the form of polymers. In the infrared spectrum at 1310cm -1 with 1150cm -1 Strong stretching vibration peaks of sulfone groups appear on the left and right, indicating the occurrence of sulfone-b...

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Abstract

The invention provides polysulfone with sulfonated lateral chain. The content of sulfonic group in the polysulfone is controllable. The polysulfone with sulfonated lateral chain provided by the invention can be used for preparing a proton exchange membrane which has the advantages of high conductivity, good mechanical property and low price. The invention also provides a preparation method of the polysulfone with sulfonated lateral chain; and in addition, the invention also provides the proton exchange membrane.

Description

technical field [0001] The invention relates to the field of polymers and their preparation, in particular to a side chain sulfonated polysulfone and a preparation method thereof. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) is regarded as a clean and efficient energy source in the 21st century due to its remarkable advantages such as high energy conversion rate, low temperature start-up, and no pollution. The proton exchange membrane is a key component of PEMFC, which mainly plays the role of conducting protons and isolating fuel and oxidant. Currently, the commonly used proton exchange membranes are Nafion series perfluorosulfonic acid membranes produced by DuPont of the United States, but perfluorosulfonic acid membranes are expensive, so the development of new low-cost proton exchange membranes has become a research hotspot. Among them, side-chain sulfonated polymers have high proton conductivity and good swelling resistance due to the hydrop...

Claims

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Application Information

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IPC IPC(8): C08G75/20C08J5/22H01M8/02H01M2/16
CPCY02E60/12Y02E60/50
Inventor 徐铜文张正辉
Owner UNIV OF SCI & TECH OF CHINA
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