Dual-network self-repairing hydrogel and preparation method thereof
A self-healing, dual-network technology, applied in the field of hydrogels, can solve the problems of non-injection, self-healing, and low service life
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[0062] The preparation method of formula V-adamantane acrylate (ADMA) comprises: adding 1 mass part of formula VII (1-adamantanol) and 20 to 40 mass parts of anhydrous dichloromethane into the reactor and stirring until fully dissolved, Add 1 to 3 parts by mass of triethylamine. The mixed solution was kept stirring at 0°C for 15min-40min. Dilute 1-3 parts by mass of acryloyl chloride of formula VIII with 5-10 parts by mass of anhydrous dichloromethane, and add it dropwise into the above mixed solution through a constant-pressure dropping funnel at 0°C. After dripping, slowly rise to room temperature and continue stirring for 18-36h. After the end, the insoluble matter was filtered off, and the filtrate was collected; 3 After the solution and distilled water were washed three times successively, the organic phase was collected and concentrated under reduced pressure at low temperature. Purify by column chromatography to obtain the product of formula V; wherein the eluent is ...
Embodiment 1
[0071] The embodiment of the present application provides a dual-network self-healing hydrogel and its preparation method, including:
[0072] Formula V (adamantane acrylate, AMDA) is prepared as follows: 1-adamantanol (3.04g, 20mmol) and anhydrous dichloromethane (60mL) are added to the reactor and stirred until fully dissolved, then triethyl Amine (3 g, 29.7 mmol). The mixed solution was kept stirring at 0 °C for 40 min. 25 mL of acryloyl chloride (3.62 g, 40 mmol) diluted with anhydrous dichloromethane was added dropwise to the above mixed solution through a constant pressure dropping funnel at 0°C. After dripping, slowly rise to room temperature and continue to stir for 18h. After the end, the insoluble matter was filtered off, and the filtrate was collected; the filtrate was washed with 0.1M HCl aqueous solution, 0.5wt% NaHCO 3 After the solution and distilled water were washed three times successively, the organic phase was collected and concentrated under reduced pre...
Embodiment 2
[0079] The embodiment of the present application provides a method for preparing a double-network self-healing hydrogel, including:
[0080] Referring to the method of Example 1, the difference is that the added amount of Formula VI (75 mg) was replaced by 100 mg, that is, 100 mg of Formula VI was added, and the rest of the steps were the same as in Example 1, and the double-network self-healing hydrogel was successfully prepared.
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