Preparation method of amphiphilic segmented copolymer
An amphiphilic block and copolymer technology is applied in the field of amphiphilic block copolymers, which can solve the problems of difficulty in industrialization, difficulty in industrialization, and increase in production cost, and achieve the effects of reducing sensitivity, reducing cost and low dosage.
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Embodiment 1
[0021] Example 1: Polyethylene glycol monomethyl ether- b - Preparation of polyhexafluorobutyl methacrylate
[0022] (1) Prepare a macroinitiator with polyethylene glycol monomethyl ether with a molecular weight of 1000
[0023] Add 40g (0.040mol) of polyethylene glycol monomethyl ether, 12.1428g (0.120mol) of triethylamine, and 240g of dichloromethane into a 500ml four-neck flask, and stir magnetically in an ice-water bath until the temperature of the system drops below 5°C , and slowly add α-bromoisobutyryl bromide 27.588g (0.120mol) dropwise, and control the temperature below 5°C. After the dropwise addition, the reaction system was reacted at room temperature (20° C. to 30° C.) for 48 hours. After the reaction, add dichloromethane until the solution is transparent, then wash with 5% hydrochloric acid solution, 5% sodium hydroxide solution, and distilled water for 3 to 5 times, separate the lower layer, add anhydrous magnesium sulfate, and let stand to remove water. It...
Embodiment 2
[0027] Example 2:Polyethylene glycol monomethyl ether- b - Preparation of polybutyl acrylate
[0028] (1) Prepare a macroinitiator with polyethylene glycol monomethyl ether with a molecular weight of 1000
[0029] Add 40g (0.040mol) of polyethylene glycol monomethyl ether, 12.1428g (0.120mol) of triethylamine, and 240g of dichloromethane into a 500ml four-neck flask, and stir magnetically in an ice-water bath until the temperature of the system drops below 5°C , and slowly add α-bromoisobutyryl bromide 27.588g (0.120mol) dropwise, and control the temperature below 5°C. After the dropwise addition, the reaction system was reacted at room temperature (20° C. to 30° C.) for 48 hours. After the reaction, add dichloromethane until the solution is transparent, then wash with 5% hydrochloric acid solution, 5% sodium hydroxide solution, and distilled water for 3 to 5 times, separate the lower layer, add anhydrous magnesium sulfate, and let stand to remove water. It was then f...
Embodiment 3
[0033] Example 3: Polyethylene glycol monomethyl ether- b - Preparation of polystyrene
[0034] (1) Prepare a macroinitiator with polyethylene glycol monomethyl ether with a molecular weight of 1000
[0035] Add 40g (0.040mol) of polyethylene glycol monomethyl ether, 12.1428g (0.120mol) of triethylamine, and 240g of dichloromethane into a 500ml four-neck flask, and stir magnetically in an ice-water bath until the temperature of the system drops below 5°C , and slowly add α-bromoisobutyryl bromide 27.588g (0.120mol) dropwise, and control the temperature below 5°C. After the dropwise addition, the reaction system was reacted at room temperature (20° C. to 30° C.) for 48 hours. After the reaction, add dichloromethane until the solution is transparent, then wash with 5% hydrochloric acid solution, 5% sodium hydroxide solution, and distilled water for 3 to 5 times, separate the lower layer, add anhydrous magnesium sulfate, and let stand to remove water. It was then filtere...
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