Sulfonated polyarylether with sulfonic group at side chain naphthalene ring and preparation method thereof

A technology of sulfonated polyarylether and sulfonic acid group, which is applied in the field of sulfonated polyarylether and its preparation, can solve the problems of difficult control of sulfonation position and degree of sulfonation, easy occurrence of various side reactions, and difficulty in industrialization, etc. , to achieve excellent chemical physical properties and mechanical properties, ensure chemical stability, and low cost

Inactive Publication Date: 2008-08-13
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since such materials require main chain protection and are prepared by post-sulfonation methods, such materials have the following disadvantages: 1) The synthesis method is complicated; 2) The sulfonation position and sulfonation degree are difficult to control; 3) A variety of side reactions are prone to occur in the sulfonation process; 4) The sulfonation process is complicated and difficult to realize industrialization

Method used

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  • Sulfonated polyarylether with sulfonic group at side chain naphthalene ring and preparation method thereof
  • Sulfonated polyarylether with sulfonic group at side chain naphthalene ring and preparation method thereof
  • Sulfonated polyarylether with sulfonic group at side chain naphthalene ring and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A sulfonated polyaryl ether with sulfonic acid group on the side chain naphthalene ring, its structural formula is:

[0028]

[0029] among them for for

[0030] The preparation method of the sulfonated polyaryl ether is:

[0031] a. The amount of the substance is 20mol and the structural formula is The sulfonated bisphenol monomer, the amount of substance is 20mol, the structural formula is The bisphenol monomer, the amount of the substance is 40mol, the structural formula is The difluoromonomer and 44mol of anhydrous potassium carbonate are mixed in 80L of polar aprotic solvent N,N-dimethylacetamide (DMAC);

[0032] b. Add 160L of toluene, heat up to 135°C for 3 hours under the protection of nitrogen, and distill the toluene out;

[0033] c. The temperature is increased to 160°C and reacted for 12 hours to obtain the sulfonated polyaryl ether with sulfonic acid group on the side chain naphthalene ring.

Embodiment 2

[0035] A sulfonated polyaryl ether with sulfonic acid group on the side chain naphthalene ring, its structural formula is:

[0036]

[0037] The preparation method of the above-mentioned sulfonated polyarylether is:

[0038] a. The amount of the substance is 145 mol and the structural formula is The sulfonated bisphenol monomer, the amount of substance is 145mol The structural formula is The bisphenol monomer, the amount of substance is 290mol, the structural formula is Difluoromonomer and 870mol of anhydrous potassium carbonate are mixed in 2030L of polar aprotic solvent N,N-dimethylformamide (DMF);

[0039] b. Add 2900L of toluene, heat up to 135°C for 4 hours under the protection of nitrogen, and distill the toluene out;

[0040] c. The temperature is increased to 160° C. and reacted for 24 hours to obtain a sulfonated polyaryl ether with a sulfonic acid group on the side chain naphthalene ring.

Embodiment 3

[0042] A sulfonated polyaryl ether with sulfonic acid group on the side chain naphthalene ring, its structural formula is:

[0043]

[0044] The preparation method of the above-mentioned sulfonated polyarylether is:

[0045] a. The amount of the substance is 60 mol and the structural formula is The sulfonated bisphenol monomer, the amount of substance is 40mol, the structural formula is The bisphenol monomer, the amount of substance is 100mol, the structural formula is The difluoromonomer and 200mol of anhydrous potassium carbonate are mixed in 500L of polar aprotic solvent 1-methyl-2-pyrrolidone (NMP);

[0046] b. Add 700L of toluene, heat up to 135°C for 4 hours under the protection of nitrogen, and distill the toluene out;

[0047] c. Raise the temperature to 160°C and react for 18 hours to obtain the sulfonated polyaryl ether with the sulfonic acid group on the side chain naphthalene ring.

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Abstract

A sulfonated poly aryl ether with sulfonic group on naphthalene ring of side chain and preparation thereof, which is capable to solve technical problems of complexity in synthesis, hardness in controlling sulphonation position and degree, high possibility of side reaction in sulphonation, complexity in sulphonation and hardness to realize indutrialzation. The introduces binaphthyl bisphenol monomer on side-chain benzene ring of sulfonic group on molecular level, prepares sulfonated poly aryl ether with sulfonic group only on naphthalene ring of side chain, so that ensures chemical stability of main chain with high molecular weight, while having no influence on mechanical property thereof. Because of existence of conjugate benzene ring on side-chain of polymer material, sulfonic group has little impact on the main chain after introduction of sulfonic group, thus stability of the main chain is improved. The sulfonic group is linked to conjugate benzene ring, which make it easier to ionize to release hydrogen proton, so that proton exchange membrane produced from the material exhibits a good electricity conductivity. The electricity conductivity thereof is comparable to Nafion membrane.

Description

Technical field [0001] The invention relates to a sulfonated polyarylether and a preparation method thereof, in particular to a sulfonated polyarylether with a sulfonic acid group on a side chain naphthalene ring and a preparation method thereof. Background technique [0002] Fuel cells have outstanding advantages such as high energy conversion efficiency (40% to 60%), environmental friendliness, cleanliness, no pollution, and no noise. They are considered to be the first choice for clean and efficient energy in the 21st century. The Proton Exchange Membrane Fuel Cell (PEMFC) is called the fifth-generation fuel cell. In addition to the general fuel cell’s [0003] The advantages are that it can be started quickly at room temperature, there is no electrolyte loss, water is easy to drain, long life, and high specific power and specific energy. Proton exchange membrane is one of the key materials of PEMFC, and the performance of proton exchange membrane is directly related to the ov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/40
Inventor 朱光明王雷
Owner SHENZHEN UNIV
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