Preparation method of hyperbranched sulfonated polyether ether ketone
The technology of sulfonated polyether ether ketone and sulfonated fluoro ketone is applied in the field of preparation of hyperbranched sulfonated polyether ether ketone, and can solve the problems of decreased membrane resistance to alcohol, increased swelling rate of membrane materials, low stability and the like. Achieve the effect of protecting the interior of the material, increasing methanol resistance, and stabilizing three-dimensional space
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[0026] Example 1
[0027] A preparation method of hyperbranched sulfonated polyether ether ketone includes the following steps:
[0028] D1 Preparation of sulfonated difluorobenzophenone monomer
[0029] The monomer difluorobenzophenone is sulfonated to obtain the sulfonated fluoroketone monomer. 50% fuming sulfuric acid and difluorobenzophenone are put into a three-necked bottle. The three-necked bottle is equipped with a mechanical stirring device, a thermometer and Spherical condenser, while stirring, heat to 110°C, react for 6h, cool to 40°C, slowly pour the reaction mixture into ice water, neutralize it with sodium hydroxide solution to neutrality, then add sodium chloride to salt out , To obtain a yellow-white solid crude product, recrystallize with ethanol and water to obtain 3,3-disulfonic acid-4,4'-difluorobenzophenone, referred to as sulfonated difluorobenzophenone monomer;
[0030] D2 Preparation of hyperbranched sulfonated polyether ether ketone
[0031] Combine 0.01mol of...
Example Embodiment
[0032] Example 2
[0033] A preparation method of hyperbranched sulfonated polyether ether ketone includes the following steps:
[0034] D1 Preparation of sulfonated difluorobenzophenone monomer
[0035] The monomer difluorobenzophenone is sulfonated to obtain the sulfonated fluoroketone monomer. 50% fuming sulfuric acid and difluorobenzophenone are put into a three-necked bottle. The three-necked bottle is equipped with a mechanical stirring device, a thermometer and Spherical condenser, while stirring, heat to 120°C, react for 8h, cool to 50°C, slowly pour the reaction mixture into ice water, neutralize it with sodium hydroxide solution to neutrality, then add sodium chloride to salt out , To obtain a yellow-white solid crude product, recrystallize with ethanol and water to obtain 3,3-disulfonic acid-4,4'-difluorobenzophenone, referred to as sulfonated difluorobenzophenone monomer;
[0036] D2 Preparation of hyperbranched sulfonated polyether ether ketone
[0037] Combine 0.01mol of...
Example Embodiment
[0038] Example 3
[0039] A preparation method of hyperbranched sulfonated polyether ether ketone includes the following steps:
[0040] D1 Preparation of sulfonated difluorobenzophenone monomer
[0041] The monomer difluorobenzophenone is sulfonated to obtain the sulfonated fluoroketone monomer. 50% fuming sulfuric acid and difluorobenzophenone are put into a three-necked bottle. The three-necked bottle is equipped with a mechanical stirring device, a thermometer and Spherical condenser, while stirring, heat to 105°C, react for 7h, cool to 45°C, slowly pour the reaction mixture into ice water, neutralize it with sodium hydroxide solution to neutrality, and add sodium chloride to salt out , To obtain a yellow-white solid crude product, recrystallize with ethanol and water to obtain 3,3-disulfonic acid-4,4'-difluorobenzophenone, referred to as sulfonated difluorobenzophenone monomer;
[0042] The reaction principle is that in the electrophilic substitution reaction of aromatics, the s...
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