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A kind of sulfonated polyarylether sulfone and its preparation method

A technology of sulfonated polyarylether sulfone and polyarylether sulfone, which is applied in the field of sulfonated polyarylether sulfone and its preparation, and achieves the effects of simple preparation method, good water absorption and chlorine resistance

Active Publication Date: 2022-05-27
NINGXIA QINGYAN POLYMER MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydrophobicity of polyethersulfone itself limits its application, so it needs to be modified to improve hydrophilicity

Method used

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  • A kind of sulfonated polyarylether sulfone and its preparation method
  • A kind of sulfonated polyarylether sulfone and its preparation method
  • A kind of sulfonated polyarylether sulfone and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Synthesis of sulfonated polyarylethersulfone (IA)

[0022]

[0023] Step 1: Synthesis of 3,3'-(sulfonylbis(6-fluoro-3,1-phenylene))bisquinoline (I-c)

[0024]

[0025] 4,4'-sulfonylbis(2-bromo-1-fluorobenzene) (8.24 g, 20 mmol) was dissolved in 100 mL of tetrahydrofuran, 0.2 g of tetrakis(triphenylphosphine) palladium was added, and quinoline-3-boronic acid was added (7.26 g, 42 mmol), heated to reflux for 12 hours under nitrogen protection. After the reaction was completed, it was brought to room temperature, 100 mL of water was added, stirring was continued for 1 hour, and filtered to obtain crude 3,3'-(sulfonylbis(6-fluoro-3,1-phenylene))bisquinoline. After recrystallization from toluene, the final product, 3,3'-(sulfonylbis(6-fluoro-3,1-phenylene))bisquinoline crude product, was 8.63 g, with a yield of 85%.

[0026] MS m / z: 509.2[M+H]+

[0027] Step 2: Synthesis of polyarylethersulfone (I-e)

[0028]

[0029] To the reaction flask was added 3...

experiment example 1

[0033] Experimental Example 1: Water Absorption Test

[0034] Under the test conditions of 25℃ and 80℃, a certain size of sulfonated polyarylethersulfone (I-B) and Nafion blank membrane were soaked in deionized water for 24h, and then the mass Mw of the soaked homogeneous membrane was weighed with an analytical balance. . Put the soaked sample into a vacuum drying oven, dry at 75°C for 24 hours, and weigh the mass Md of the dry film after it is completely dried. The water absorption formula is (Mw-Md) / Md*100%. The experimental results are shown in Table 1.

experiment example 2

[0035] Experimental example 2: Test of ion exchange capacity

[0036] Weigh the fully dried sulfonated polyaryl ether sulfone (I-B) and Nafion blank membrane (weight as M), use N-methylpyrrolidone as a solvent, use 10 mL of N-methylpyrrolidone to dissolve the above, and add 10 mL of dehydration after fully dissolving. Ionized water, using methyl red as an indicator, was titrated with a calibrated NaOH solution (concentration denoted as C1) (the volume consumed by NaOH was denoted as V1), tested 3 times, and used formula (2) to calculate the ion exchange capacity, the formula is IEC=V1*C1 / M. The experimental results are shown in Table 1.

[0037] Table 1

[0038]

[0039] It can be seen from the above results that the water absorption and ion exchange capacity of the sulfonated polyaryl ether sulfone of the present invention are obviously better than those of Nafion, and have great commercial application potential.

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Abstract

The invention discloses a sulfonated polyarylether sulfone and a preparation method thereof.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a class of sulfonated polyaryl ether sulfones and a preparation method thereof. Background technique [0002] Polyarylethersulfone material is a special engineering plastic that combines the characteristics of easy molding and high impact strength. It has excellent dimensional stability, thermal stability, mechanical stability and good biocompatibility. Because of its excellent performance The advantages of low price and low price are widely used in the fields of medicine, transportation and electronic appliances. However, the hydrophobicity of polyethersulfone itself limits its application, therefore, it needs to be modified to improve its hydrophilicity. At present, the commonly used modification method is to introduce sulfonic acid groups through sulfonation. The modified sulfonated polyethersulfone material has good hydrophilicity, acid and alkali resistance and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G75/23
CPCC08G75/23
Inventor 张东宝于冉张奇
Owner NINGXIA QINGYAN POLYMER MATERIALS CO LTD
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