Synthetic method and application of amphiphilic block copolymer-polyamino polymer
A technology of amphiphilic block and synthesis method, which is applied in the field of polymer material synthesis and nano-functional materials, can solve the problems of poor performance, cumbersome synthesis methods of block copolymers, and few terminal functional groups, and achieve crystallization The effect of good performance, mild conditions and uniform particle size distribution
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Embodiment 1
[0044] This embodiment relates to the synthetic method of amphiphilic block copolymer-polyamine-based polymer, comprising the following steps:
[0045] 1) Weigh F127 (0.5mol) in a three-necked flask, vacuumize, raise the temperature of the oil bath to 110°C, stir magnetically for 3 hours, remove water from F127, cool down to 70°C and blow nitrogen, add 1,4-dioxane, Magnetic stirring to form a homogeneous solution;
[0046] 2) Cool down to 30°C, add diphenylmethane diisocyanate (1.2mol) into a three-necked flask, then add the catalyst dibutyltin dilaurate 0.00263g, raise the temperature to 60°C for 3 hours and cool down to 30°C;
[0047] 3) Add polyethyleneimine (1.5mol) into a three-necked flask, raise the temperature to 50° C. and react for 3 hours to obtain an amphiphilic block copolymer-polyamine-based polymer. figure 1 is the infrared spectrum of the product, from figure 1 It can be seen that 1730cm-1 corresponds to the C=O vibration of the carbamate, and 1645cm-1 corres...
Embodiment 2
[0049] This embodiment relates to the synthetic method of amphiphilic block copolymer-polyamine-based polymer, comprising the following steps:
[0050] 1) Weigh P123 (0.5 mol) in a three-necked flask, vacuumize, raise the temperature of the oil bath to 110°C, stir magnetically for 3 hours, remove water from P123, cool down to 50°C and pass nitrogen, add tetrahydrofuran, stir magnetically to form a uniform solution ;
[0051] 2) Cool down to 30°C, add hexamethylene diisocyanate (1.5mol) into the there-necked flask, then add 0.00126 g of the catalyst stannous octoate, raise the temperature to 50°C and react for 3 hours and cool down to 30°C;
[0052] 3) Add polyethyleneimine (1.5 mol) into a three-necked flask, raise the temperature to 40° C. and react for 3.5 hours to obtain an amphiphilic block copolymer-polyamine-based polymer.
Embodiment 3
[0054] This embodiment relates to the synthetic method of amphiphilic block copolymer-polyamine-based polymer, comprising the following steps:
[0055] 1) called H 2 N-PCL-PEG (0.1mol) was placed in a three-necked flask, vacuumed, the temperature of the oil bath was raised to 110°C, stirred by magnetic force for 3 hours, and H 2 N-PCL-PEG (0.1mol) removes water, cools down to 60°C, blows nitrogen, adds 1,4-dioxane, and stirs magnetically to form a uniform solution;
[0056] 2) Cool down to 30°C, add toluene diisocyanate (0.2mol) into the there-necked flask, then add 0.00504 g of dibutyltin dilaurate as a catalyst, heat up to 60°C for 3 hours and cool down to 30°C;
[0057] 3) Add polyethyleneimine (1.5 mol) into a three-necked flask, raise the temperature to 60° C. and react for 2.5 hours to obtain an amphiphilic block copolymer-polyamine-based polymer.
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