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Sulfonated polyether sulphone and preparation method thereof

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: 2020-06-05
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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  • Sulfonated polyether sulphone and preparation method thereof
  • Sulfonated polyether sulphone and preparation method thereof
  • Sulfonated polyether sulphone and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0022]

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

[0024]

[0025] Dissolve 4,4'-sulfonylbis(2-bromo-1-fluorobenzene) (8.24g, 20mmol) in 100mL tetrahydrofuran, add 0.2g tetrakis(triphenylphosphine)palladium, add quinoline-3-boronic acid (7.26g, 42mmol), heated to reflux for 12 hours under nitrogen protection. After the reaction, cool to room temperature, add 100mL of water, continue to stir for 1 hour, and filter to obtain the crude product of 3,3'-(sulfonylbis(6-fluoro-3,1-phenylene))biquinoline. Recrystallized from toluene, the final product 3,3'-(sulfonylbis(6-fluoro-3,1-phenylene))diquinoline crude product was 8.63g, and the yield was 85%.

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

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

[0028]

[0029] Add 3,3'-(sulfonylbis(6-fluoro-3,1-phenylene))biquinoline (5.08g, 10mmol), 4,4'-(1,3-dioxo Pentacycl...

experiment example 1

[0033] Experimental Example 1: Water Absorption Test

[0034] Under the test conditions of 25°C and 80°C, soak a certain size of homogeneous sulfonated polyarylethersulfone (I-B) and Nafion blank membrane in deionized water for 24 hours, and then use an analytical balance to weigh the mass Mw of the homogeneous membrane after soaking . Put the soaked sample into a vacuum drying oven and dry at 75°C for 24 hours. After complete drying, weigh the mass Md of the dry film. The formula for water absorption 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 polyarylethersulfone (I-B) and Nafion blank membrane (the weight is denoted as M), use N-methylpyrrolidone as solvent, use 10mL N-methylpyrrolidone to dissolve the above, and add 10mL of Ionized water, using methyl red as an indicator, titrated with a calibrated NaOH solution (concentration is denoted as C1) (the volume consumed by NaOH is denoted as V1), tested 3 times, and the ion exchange capacity was calculated using formula (2), the formula It is IEC=V1*C1 / M. The experimental results are shown in Table 1.

[0037] Table 1

[0038]

[0039] From the above results, it can be seen that the water absorption and ion exchange capacity of the sulfonated polyarylethersulfone of the present invention are significantly better than those of Nafion, and have great potential for commercial application.

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Abstract

The invention discloses sulfonated polyether sulphone 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 polyarylether sulfone 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. With the advantages of low price and low price, it is widely used in the fields of medicine, transportation and electronic appliances. However, the hydrophobicity of polyethersulfone itself limits its application, so it needs to be modified to improve 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 chlorine resistance, and can be used in fue...

Claims

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Application Information

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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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