Bifunctional ligand, 3D polymer molecular brush and preparation method thereof
A dual-function, molecular brush technology, applied in the field of polymer materials, can solve problems such as complex preparation process and inability to characterize polymer chains, and achieve the effects of simple operation, reduced consumption of raw materials, and reduced dosage
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Embodiment 1
[0028] Preparation of bifunctional ligand: weigh 50.0g absolute ethanol, 20.0g butyl acrylate, 45.0g N-(3-dimethylaminopropyl) methacrylamide, 0.20g azobisisobutyl For the amidine hydrochloride initiator, nitrogen gas was introduced for 30 minutes under magnetic stirring to remove oxygen from the solution, and reacted at 55°C for 10 hours to obtain a block copolymer. After the reaction was completed, it was cooled to room temperature for use;
[0029] Weigh 25.0 g of block copolymer and 8.0 g of propylene chloride and add it into 25.0 g of absolute ethanol, pass through nitrogen to remove oxygen for 30 min, and react at 80°C for 72 h. After the reaction was completed, the solvent was removed by a rotary evaporator, washed several times with ethyl acetate, filtered, and vacuum-dried to obtain the final product.
[0030] The structural formula of the prepared bifunctional ligand is as follows:
[0031]
[0032] Preparation of 3D polymer molecular brush: weigh 2.90g span80, 0...
Embodiment 2
[0034] Preparation of bifunctional ligand: weigh 50.0g absolute ethanol, 20.0g ethyl acrylate, 42.0g N-(3-dimethylaminopropyl) methacrylamide, 0.25g azobisisobutyl For the amidine hydrochloride initiator, nitrogen gas was introduced for 30 minutes under magnetic stirring to remove oxygen from the solution, and the block copolymer was obtained by reacting at 55°C for 10 hours. After the reaction, cool to room temperature for use;
[0035] Weigh 25.0 g of block copolymer and 8.0 g of chloroprene and add them into 25.0 g of absolute ethanol, pass through nitrogen to remove oxygen for 30 min, and then raise the temperature to 80° C. for 72 h. After the reaction was completed, the solvent was removed by a rotary evaporator, washed several times with ethyl acetate, filtered by suction, and dried in vacuum.
[0036] Preparation of 3D polymer molecular brush: weigh 2.90g span80, 0.6g tween80 emulsifier, and 60.0g white oil in a flask, and stir evenly. Weigh 10.0g deionized water, 2.0...
Embodiment 3
[0038]Preparation of bifunctional ligand: weigh 50.0g absolute ethanol, 20.0g octadecyl acrylate, 25.0g N-(3-dimethylaminopropyl) methacrylamide, 0.25g azobis Isobutyronitrile initiator, under magnetic stirring, pass nitrogen gas for 30 minutes to remove oxygen from the solution, react at 55°C for 10 hours to obtain a block copolymer, and cool to room temperature after the reaction for use;
[0039] Weigh 25.0 g of block copolymer and 8.0 g of 6-chloro-1-hexene and add them to 25.0 g of absolute ethanol, pass through nitrogen to remove oxygen for 30 min, and react at 80°C for 72 h. After the reaction was completed, the solvent was removed by a rotary evaporator, washed several times with ethyl acetate, filtered by suction, and dried in vacuum.
[0040] Preparation of 3D polymer molecular brush: weigh 2.90g span80, 0.6g tween80 emulsifier, and 50.0g white oil in a flask, and stir evenly. Weigh 10.0g deionized water, 2.0g acrylic acid in a beaker, adjust to neutral with sodium ...
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