Amphiphilic block polymer synthesis process based on cyclic lactone
A cyclic lactone and synthesis process technology, which is applied in the field of cyclic lactone-based amphiphilic block polymer synthesis process, can solve potential safety hazards, difficult to expand production, and difficult to obtain narrow dispersion high molecular weight amphiphilic It can solve the problems of volatile polymers, etc., to achieve the effect of single variable, simplify the feeding process, and save the preparation time.
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Embodiment 1
[0026] A. Put the reaction raw materials mPEG-OH, ε-caprolactone, stannous octoate, toluene, silanized polymer tube, hydrothermal synthesis reaction kettle, and stirring bar into an anhydrous and oxygen-free glove box ;
[0027] B. preparation volume ratio is 0.1% stannous octoate / toluene mixed solution in anhydrous and oxygen-free glove box;
[0028] C. Add 50 mg mPEG-OH and 450 mg ε-caprolactone into the silanized polymerization tube equipped with a stirring bar in an anhydrous and oxygen-free glove box, then add 1 mL of anhydrous toluene and 3.2 μL of 0.1% octanoic acid sulfide Tin / toluene mixed solution.
[0029] D. In an anhydrous and oxygen-free glove box, seal the polymerization tube containing the reaction reagent with tin foil and put it into the polytetrafluoroethylene liner, and fill the gap with tin foil to fix the polymerization tube in the liner, and then put Put the PTFE bushing into the kettle, then tighten the lid of the kettle, and then use the screw to tig...
Embodiment 2
[0036] A. Put the reaction raw materials mPEG-OH, L-lactide, stannous octoate, toluene, silanized polymer tube, hydrothermal synthesis reaction kettle, and stirring bar into an anhydrous oxygen-free glove box ;
[0037] B. preparation volume ratio is 0.1% stannous octoate / toluene mixed solution in anhydrous and oxygen-free glove box;
[0038] C. Add 300 mg mPEG-OH and 300 mg L-lactide into the silanized polymerization tube equipped with a stirring bar in an anhydrous and oxygen-free glove box, then add 1 mL of toluene solution, 20 μL of 0.1% stannous octoate / toluene mixed solution.
[0039] D. In an anhydrous and oxygen-free glove box, seal the polymerization tube containing the reaction reagent with tin foil and put it into the polytetrafluoroethylene liner, and fill the gap with tin foil to fix the polymerization tube in the liner, and then put Put the PTFE bushing into the kettle, then tighten the lid of the kettle, and then use the screw to tighten the lid of the kettl...
Embodiment 3
[0047] A. Put the reaction raw materials Mal-PEG-OH, lactide, stannous octoate, toluene, silanized polymerization tube, hydrothermal synthesis reaction kettle and stirring bar into anhydrous and oxygen-free gloves in the box;
[0048]B. preparation volume ratio is 0.05% stannous octoate / toluene mixed solution in anhydrous and oxygen-free glove box;
[0049] C. Add 300mg of Mal-PEG-OH and 300mg of L-lactide in a silanized polymerization tube equipped with a stirring bar in an anhydrous and oxygen-free glove box, and then add the mixed solution to make the lactide The molar ratio of lactide to stannous octoate is 1:0.1%.
[0050] D. In an anhydrous and oxygen-free glove box, seal the polymerization tube containing the reaction reagent with tin foil and put it into the polytetrafluoroethylene liner, and fill the gap with tin foil to fix the polymerization tube in the liner, and then put Put the PTFE bushing into the kettle, then tighten the lid of the kettle, and then use the s...
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