Oil-water gel for circulating information storage under visible light as well as preparation method and application of oil-water gel
A technology of information storage and oil-hydrogel, which is applied in the direction of instruments, image data processing, computer security devices, etc., can solve the problems of information reading requiring specific equipment, poor re-editability, etc., and achieves simple preparation methods, convenient operation, and wide application The effect of applying the foreground
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[0026] Specifically, as an aspect of the technical solution of the present invention, a related preparation method of an oil-hydrogel for cyclic information storage under visible light includes:
[0027] The first mixed reaction system comprising the first monomer, the first initiator, the first cross-linking agent and the first solvent is subjected to a polymerization reaction to obtain a hydrogel, and then soaked and dried in acetone to obtain a dehydration Hydrogels;
[0028] And, the second mixed reaction system comprising the second monomer, the second initiator, the second cross-linking agent, the second solvent and the dehydrated hydrogel is subjected to photopolymerization, so as to obtain the cyclic information storage under visible light oil hydrogel.
[0029] In some preferred embodiments, the preparation method specifically includes:
[0030] The first monomer, the first initiator, the first cross-linking agent and the first solvent are mixed to form a hydrogel p...
Embodiment 1
[0078] (1) Preparation of hydrogel: 1g N,N'-dimethylacrylamide, 10mg ammonium persulfate, 1mg N,N'-methylenebisacrylamide were dissolved in 5g deionized water, and poured into a mold , the reaction temperature was 4 °C, and the reaction time was 48 h to obtain a hydrogel; the hydrogel was soaked in acetone for 3 h, taken out, and dried in a ventilated place for 3 h at a drying temperature of 20 °C;
[0079] (2) Preparation of oil hydrogel: The dehydrated hydrogel was added into a mixture of 1 g of octadecyl methacrylate, 5 g of absolute ethanol, 10 mg of 2,2-diethoxyacetophenone and 1 mg of ethylene glycol dimethacrylate. Soak it in the mixed solution for 6 hours, take it out, irradiate it with a 365nm UV lamp for 60 minutes at 20°C, and put it in dimethyl sulfoxide to obtain an oil-hydrogel;
[0080] (3) Information loading: place the "cherry blossom" pattern mold on the surface of the oil-hydrogel in step (2), add water droplets to the mold, and the water molecules will pene...
Embodiment 2
[0086] (1) Preparation of hydrogel: 1.5g N,N'-dimethylacrylamide, 30mg ammonium persulfate, 3mg N,N'-methylenebisacrylamide were dissolved in 5g deionized water, poured into In the mold, the reaction temperature was 42°C, and the reaction time was 25h to obtain a hydrogel; the hydrogel was soaked in acetone for 6h, taken out, and dried in a ventilated place for 4h, and the drying temperature was 30°C;
[0087] (2) Preparation of oil hydrogel: The dehydrated hydrogel was added into a mixture of 2 g of octadecyl methacrylate, 5 g of absolute ethanol, 30 mg of 2,2-diethoxyacetophenone and 3 mg of ethylene glycol dimethacrylate. Soak it in the mixed solution for 6 hours, take it out, irradiate it with a 365nm UV lamp for 30 minutes at 40°C, and put it in dimethyl sulfoxide to obtain an oil-hydrogel;
[0088] (3) Information loading: place the "cherry blossom" pattern mold on the surface of the oil-hydrogel in step (2), add water droplets to the mold, and the water molecules will p...
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