Preparation method of environment-responsive polymer with core-shell structure
A core-shell structure and polymer technology is used in the specific preparation field of hydrogel composite assembly to synthesize environment-responsive polymers, which can solve problems such as unreported
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Embodiment 1
[0033] First, 30g methyl methacrylate and 300g 1,4-dioxane were added to the reactor, stirred and heated to 60°C, filled with nitrogen for 5 times and deoxygenated for 20 minutes, then sealed, and 18.18g of 3-mercaptopropane was added. Isooctyl acid, then add 2.74g of 30% cerium ammonium nitrate nitric acid solution, stir for 10 minutes, add 19.4g of 60% D-glucuronic acid aqueous solution, react at a constant temperature for 4 hours, cool to 20°C, add 10% sodium hydroxide solution to neutralize to pH 7, remove the solvent by vacuum distillation, and then add 4 g aqueous solution of 30% sodium dodecyl sulfate to obtain a polymer Emulsion; 40g of polyvinyl alcohol and 10g of deionized water were added to the reactor, stirred and heated to 70°C, purged with nitrogen for 20 minutes, added 1.2g of epichlorohydrin, stirred and reacted for 2 hours, and then poured the mixture into Put it into a mold and cool it to 20°C, release the mold after 60 hours of cross-linking reaction, and w...
Embodiment 2
[0035] First, 30g of styrene and 90g of dimethyl sulfoxide were added to the reactor, stirred and heated to 70°C, filled with nitrogen for 3 times and deoxygenated for 30 minutes, then sealed, 5.19g of isopropanol was added, and 79.05g of mass fraction was added. It is a nitric acid solution of 20% ceric ammonium nitrate. After stirring for 12 minutes, 24.23 g of 70% gluconic acid aqueous solution is added. After constant temperature reaction for 2 hours, it is cooled to 20 ° C and added with a mass fraction of 50% sodium hydroxide solution. Neutralize to pH 7, remove the solvent by vacuum distillation, and then add 9 g of an aqueous solution of 10% sodium dodecyl sulfate to obtain a polymer emulsion; 40 g of polyvinyl alcohol and 24 g of deionized water are added to the reaction The temperature was increased to 90°C with stirring, and nitrogen was purged for 5 minutes. 1.6g of terephthalaldehyde was added, and the reaction was stirred for 2 hours. Then the mixture was poured i...
Embodiment 3
[0037]First, 30g of vinyltoluene and 150g of dimethylformamide were added to the reactor, stirred and heated to 80°C, filled with nitrogen for 4 times and deoxygenated for 20 minutes, then sealed, and 27.71g of isooctyl 3-mercaptopropionate was added, Then add 6.98g of 20% cerium ammonium nitrate nitric acid solution, stir for 5 minutes, add 104.1g of 40% gluconic acid aqueous solution, after constant temperature reaction for 6 hours, cool to 40 ° C, add 30 % ethylenediamine solution was neutralized to pH 6, the solvent was removed by distillation under reduced pressure, and 12 g of an aqueous solution of sodium stearate with a mass fraction of 20% was added to obtain a polymer emulsion; 40 g of polyvinyl alcohol and 32 g of deionized Water was added to the reactor, stirred and heated to 80°C, purged with nitrogen for 12 minutes, added with 2g of glutaraldehyde, stirred and reacted for 2 hours, then poured the mixture into the mold and cooled to 40°C for cross-linking reaction ...
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