Crosslinked copolymer and ionic exchange film
A technology of ion-exchange membranes and copolymers, applied in the field of ion-exchange membranes, can solve the problems of limited application and development of solid-state anion-exchange membranes, low ion conductivity, etc.
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preparation example 1
[0018] Preparation example 1 (preparation of crosslinking agent)
[0019] Add 2.73g of N,N'-4,4'-diphenylmethane bismaleimide, 0.37g of 2.4-dimethylimidazole, and 97g of dimethylacetamide (DMAc) into the reaction flask, After fully stirring, react at 150° C. for 5 hours to obtain a polymeric crosslinking agent.
[0020] The structure of N,N'-4,4'-diphenylmethane bismaleimide is The structure of 2,4-dimethylimidazole is And the molar ratio of the above two is 2:1.
preparation example 2
[0022] Under nitrogen system, 1 molar part of 4-cyano-4-(thiobenzoyl) pentanoic acid (purchased from Stream), 500 molar parts of 4-chloromethylstyrene (4-vinylbenzyl chloride, VBC ), 600 molar parts of n-butyl acrylate (n-butyl acrylate, BA), 900 molar parts of styrene (styrene, St), and 2.5 molar parts of azobisisobutyronitrile (AIBN) in a double-necked bottle After adding toluene to dissolve the above mixture, raise the reaction temperature to 75°C and react for 24 hours. After cooling down to room temperature, add methanol to precipitate the solid, wash and remove the residual monomer in the solid, and dry under reduced pressure to obtain the copolymer Poly(VBC-co-BA-co-St)-1.
[0023] Add the above-mentioned copolymer Poly(VBC-co-BA-co-St)-1 (its VBC is regarded as 1 mole part), 2.5 mole parts of 1-methylimidazole, and 0.005 mole parts of dibutylhydroxytoluene into bis In the flask, after adding butanol and tetrahydrofuran (THF) to dissolve the above mixture, the reaction...
preparation example 3
[0025]Under a nitrogen system, mix 1 molar part of 4-cyano-4-(thiobenzoyl) pentanoic acid, 700 molar parts of VBC, 500 molar parts of BA, 800 molar parts of St, and 2.5 molar parts of AIBN in a two-necked flask, add toluene to dissolve the above mixture, raise the reaction temperature to 75°C and react for 24 hours, add methanol to precipitate the solid after cooling down to room temperature, wash to remove the residual monomer in the solid, and dry under reduced pressure After that, the copolymer Poly(VBC-co-BA-co-St)-2 can be obtained.
[0026] Add the above-mentioned copolymer Poly(VBC-co-BA-co-St)-2 (its VBC is regarded as 1 mole part), 2.5 mole parts of 1-methylimidazole, and 0.005 mole part of dibutylhydroxytoluene into bis In the flask, add butanol and THF to dissolve the above mixture, increase the reaction temperature to 77°C and react for 16 hours, cool down to room temperature, add ether to precipitate the solid, wash to remove the residual monomer in the solid, and...
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