Synthesis method of tea saponin molecularly imprinted polymer based on methacryloxysilsesquioxane crosslinking agent
A technology of methacryloyloxy and silsesquioxane, which is applied in the synthesis field of tea saponin molecularly imprinted polymer, can solve the problems of complicated operation and low efficiency, and achieves mature technology, simple operation, simple and efficient purification Effect
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[0023] A method for synthesizing the tea saponin molecularly imprinted polymer based on methacryloxysilsesquioxane crosslinking agent, comprising the following steps:
[0024] (1) Weigh template molecules and dissolve them in 30-50 mL of 90% methanol aqueous solution, then add functional monomers, shake well on a horizontal shaker for 0.5 h, pre-polymerize for 12 h in a dark environment at 4°C, and add cross-linking agent , initiator and chain transfer agent, ultrasonically dispersed for 30 min, nitrogen-filled and deoxygenated for 15 min, polymerized in a water bath at 60°C for 24 h, and a light red imprinted polymer was obtained.
[0025] (2) Put the light red imprinted polymer obtained in step (1) into a Soxhlet extractor, extract in 80% methanol / acetic acid solution at 90°C for 48 h, and change the extraction solvent every 24 h. After washing with water to neutrality, washing with methanol twice, and vacuum drying at 60°C for 24 h, the tea saponin molecularly imprinted pol...
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[0027] Weigh 0.25 mmol of the template molecule tea saponin and dissolve it in 30 mL of 90% methanol aqueous solution, then add functional monomers, 0.5 mmol of acryloyl-β-cyclodextrin and 0.5 mmol of acrylamide, and shake well on a horizontal shaker for 0.5 h, pre-polymerized for 12 h in a dark environment at 4°C, added a crosslinking agent, 4.5 mmol of trimethylolpropane trimethacrylate and 0.5 mmol of methacryloxysilsesquioxane, and an initiator, azobis Isobutylcyanide 30 mg and chain transfer agent, 2-phenyl-2-propyl benzodisulfide 60 mg, ultrasonic dispersion for 30 min, nitrogen deoxygenation for 15 min, polymerization in water bath at 60°C for 24 h, obtained shallow Red imprinted polymer. The obtained light red imprinted polymer was put into a Soxhlet extractor, extracted in 80% methanol / acetic acid solution at 90°C for 48 h, and the extraction solvent was changed every 24 h. After washing with water to neutrality, washing with methanol twice, and vacuum drying at 60°C...
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