Temperature-sensitive hydrogel containing adamantyl and preparation method and application thereof
A temperature-sensitive hydrogel and adamantyl technology, applied in the field of temperature-sensitive hydrogel and its preparation, can solve the problems of not being able to respond quickly at the same time, and achieve rapid deswellability, high mechanical strength, and response rate fast effect
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[0039] Example 1:
[0040] Weigh the hydrophobic monomer adamantyl methacrylate (AdMA, the structure is as R in the general formula 0 =CH 3 , R 1 =H, R 2 =H, R 3 =H) 0.01g in a small reaction flask, then add 1g N-isopropylacrylamide (NIPAM) and 30mg N,N'-methylenebisacrylamide, and then add 7ml 1,4-dioxane After shaking until all solids are dissolved, 12.5 mg of initiator azobisisobutyronitrile is added, and then the tube is sealed after 4 cycles of vacuum-filling with nitrogen, and the reaction flask is placed in an oil bath at 75°C for 10 hours. The colorless and transparent gel is soaked in distilled water for 5 days, first soaked in distilled water at 20°C for 24h, then placed in distilled water at 40°C to allow it to shrink naturally, then change the water, soak in distilled water at room temperature after four cycles , The temperature-sensitive hydrogel AdMA1 containing adamantyl groups was obtained.
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[0041] Example 2:
[0042] In the preparation of the temperature-sensitive copolymer hydrogel AdMA3 containing adamantyl groups, only the hydrophobic monomer AdMA and NIPAM have a feed ratio of 3%. The feed ratios of other raw materials and the reaction steps are the same as those in Example 1. Sensitive hydrogel AdMA3.
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[0043] Example 3:
[0044] For the preparation of the temperature-sensitive copolymer hydrogel AdMA5 containing adamantyl groups, only the feed ratio of the hydrophobic monomer AdMA and NIPAM was 5%. The feed ratios of other raw materials and the reaction steps were the same as those in Example 1, and the temperature-sensitive copolymer containing adamantyl groups was obtained. Sensitive hydrogel AdMA5.
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