Cationic polymer containing branched structure, and preparation method and application thereof
A technology of cationic polymers and branched structures, which is applied in the field of anion exchange membrane materials, can solve problems such as damage to the stability of anion membranes, and achieve the effect of improving alkali resistance, anti-oxidation stability, and good anti-swelling performance
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[0059] Example 1
[0060] In this embodiment, the cationic polymer containing the branching structure has a structural formula shown in formula (6):
[0061]
[0062] The specific method is: Benzene (0.3 g, 1.945 mmol), 7-bromo-1,1,1-trifluorophenic-2 ketone (0.5313 g, 2.1506 mmol), 1,3,5-triphenylbenzene ( 0.00298G, 9.727 × 10 -3 Mmol), dichloromethane (2 mL) and trifluoromethanesulfonic acid (2 mL) were reacted at room temperature for 24 h to give a viscous polymer solution. After the reaction was completed, it was slowly added dropwise to methanol to give a white crude fibrous polymer. It was then filtered and washed well. After drying in vacuo, 0.83 g of a white fibrous brominated polymer precursor was obtained.
[0063] The brominated polymer precursor is then dissolved in 15 ml N-methylpyrrolidone, and 2.6 ml of trimethylamine solution was added (4.2 mol L. -1 After 72 hours of ethanol solution, the reaction system was slowly added to anhydrous ether after 72 hours, and 0....
Example Embodiment
[0067] Example 2
[0068] In this embodiment, the cationic polymer containing the branched structure has a structural formula represented by the formula (7):
[0069]
[0070] The specific method is: Belt-triphenyl (0.6 g, 2.6063 mmol), 7-bromo-1,1,1-trifluoroptoheptide (0.722 g, 2.9231 mmol), 1,3,5-triphenyl group Benzene (0.0159g, 5.21 × 10 -2 Mmol), dichloromethane (2.6 mL) and trifluoromethane (2.6 mL) were stirred at room temperature for 24 h to give a black gel-like substance. After the reaction was completed, it was slowly added dropwise to methanol to give a white crude fibrous polymer. It was then filtered and washed well. After vacuum dried, 1.31 g of a white fibrous brominated precursor polymer was obtained.
[0071] The brominated precursor polymer is then dissolved in 15 mL N-methylpyrrolidone, and 2.2 ml of trimethylamine (4.2 mol L) was added. -1 After 72 hours of ethanol solution, the reaction system was slowly added to anhydrous ether after 72 hours, and 0.72 g ...
Example Embodiment
[0075] Example 3
[0076] In this embodiment, the cationic polymer containing the branching structure has a structural formula shown in formula (8):
[0077]
[0078] The specific method is: Benzene (0.3 g, 1.945 mmol), 7-bromo-1,1,1-trifluorophenic-2 ketone (0.5313 g, 2.1506 mmol), 1,3,5-triphenylbenzene ( 0.00298G, 9.727 × 10 -3 Mmol), dichloromethane (2 mL) and trifluoromethanesulfonic acid (2 mL) were stirred at room temperature for 24 h to give a black gel-like substance. After the reaction was completed, it was slowly added dropwise to methanol to give a white crude fibrous polymer. It was then filtered and washed well. After drying in vacuo, 0.67 g of a white fibrous brominated precursor polymer was obtained.
[0079]The brominated precursor polymer was then dissolved in 15 ml N-methylpyrrolidone, and 1.51 ml of N-methylpiperidine was added, and after 72 hours at room temperature, the reaction system was slowly added to anhydrous ether to give 0.7 g of grayish white Fiber...
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