Application of dopamine sugar-containing copolymer
A technology of copolymer and dopamine, which is applied in anti-fog dopamine sugar-containing polymers and antibacterial fields. It can solve the problems of weak hydrophilicity, poor visible light transmittance, and limited application of optical films. Super-hydrophilic anti-fog performance, the effect of improving water absorption stability
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[0038] (2) The preparation method of dopamine sugar-containing copolymer comprises the steps:
[0039] A.1 Add the monomer and photoinitiated chain transfer agent into the organic solvent to form a uniform mixed solution, bubble in an inert gas to remove oxygen, initiate polymerization through visible light, and prepare the copolymer by "one-pot" reaction;
[0040] In this step, the monomer is selected from one or more of 2-methacrylamidoglucopyranose (MAG), dopamine methacrylamide (DMA), and methacrylic acid (MAA). Monomer feed ratio DMA:MAG=[10:1]~[1:50]; preferably, [1:1]~[1:20]; optimally, [1:5]; antibacterial, anti-fog containing The monomer of sugar copolymer (PDMM) is selected from DMA, MAG and MAA; Monomer feed ratio DMA:MAG:MAA=[10:1:l]~[1:50:50]; Preferably, [1:1 :l] ~ [1:20:20]; optimally, [1:5:3].
[0041] The organic solvent is selected from one or more of N, N-dimethylformamide, dimethyl sulfoxide, and tetrahydrofuran; the inert gas is selected from one of argo...
Embodiment 1
[0063] This embodiment relates to a preparation method of a binary dopamine sugar-containing copolymer with anti-fog properties, which comprises the following steps:
[0064] 1) Weigh 192mg 2-methacrylamidoglucopyranose (MAG), 36mg dopamine methacrylamide (DMA) and 1mg 4-cyano-4-(phenylthioformylthio)valeric acid ( CPADB) was dissolved in 1mL dimethyl sulfoxide, deoxygenated by argon gas bubbling for 15 minutes, then sealed, and reacted under sunlight or simulated sunlight for 45 hours at room temperature under anaerobic conditions at 25°C to stop the reaction;
[0065] 2) Using methanol as a precipitating agent, slowly drop the reaction stock solution into 200 mL of methanol to obtain a white polymer precipitate, then centrifuge, dry, weigh and calculate the yield.
[0066] The molar ratio of monomer / chain transfer agent described in this example is DMA:MAG:CPADB=40:200:1.
[0067] In this example, the molecular weight and molecular weight distribution of the obtained polyme...
Embodiment 2
[0071] This embodiment relates to a preparation method of a ternary dopamine sugar-containing copolymer with antibacterial and anti-fog properties, which comprises the following steps:
[0072] 1) Weigh 177 mg of 2-methacrylamidoglucopyranose (MAG), 32 mg of dopamine methacrylamide (DMA), 36 μL of methacrylic acid (MAA) and 4-cyano-4-(phenylthiomethyl Acylthio)valeric acid (CPADB) was dissolved in 2 mg in 1.2 mL of dimethyl sulfoxide, deoxygenated by bubbling argon for 15 min, then sealed, and placed under sunlight or simulated sunlight at 25°C under anaerobic conditions at room temperature. The reaction was stopped after 45 hours of irradiation under light;
[0073] 2) Using methanol as a precipitating agent, slowly drop the reaction stock solution into 200 mL of methanol to obtain a white polymer precipitate, then centrifuge, dry, weigh and calculate the yield.
[0074] The monomer / chain transfer agent molar ratio of the dopamine sugar-containing copolymer PDMM prepared in ...
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