A kind of high price silver antibacterial agent and preparation method thereof
An antibacterial agent and high-priced silver technology, which is applied in the field of preparation of high-priced silver antibacterial agents, can solve the problems of high-priced silver instability, poor stability, and limited ligands, and achieve high thermodynamic stability, good washability, and low equipment requirements Effect
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Embodiment 1
[0032] Example 1 Nanoscale Ag ( )-PHMB complex synthesis
[0033] (1) Preparation of inverse microemulsion
[0034] Take 1.2 g of bis(2-ethylhexyl) sodium sulfosuccinate (AOT), dissolve it in 18 g of heptane at room temperature and stir until transparent;
[0035] (2) Add 255 μL of water and 256 μL of 5 g / L PHMB aqueous solution with a viscosity average molecular weight of 2133 to step (1), and stir until clarified under magnetic force;
[0036] (3) Add 0.04 mol / L AgNO to step (2) 3 73 μL and stir until clear and colorless;
[0037] (4) Add 0.04 mol / L Na to step (3) 2 S 2 o 8 146 μL, add dropwise NaOH solution of PH=14 to adjust the pH between 9-11 and stir for 22 h until the inverse microemulsion turns light orange-brown. A small amount of ethanol was added for centrifugation, washed with ethanol and deionized water, and dried to obtain nanoscale Ag ( )-PHMB complexes.
Embodiment 2
[0038] Embodiment 2 nanoscale Ag ( )-PHMB complex synthesis
[0039] (1) Preparation of inverse microemulsion
[0040] Take 1.4 g of ethylene bis(dodecyldimethyl)ammonium chloride (cationic gemini surfactant) and dissolve it in 18 g of heptane and stir until transparent.
[0041] (2) Add 380 μL of 5 g / L PHMB aqueous solution with a viscosity average molecular weight of 3245 to step (1), and stir until clarified under magnetic force.
[0042] (3) Add 0.04 mol / L AgNO to step (2) 3 73 μL and stir until clear and colorless.
[0043] (4) Add 0.04 mol / L of K to step (3) 2 S 2 o 8 220 μL, dropwise add NaOH solution of PH=14 to adjust the pH between 9-11, and stir for 18 h until the inverse microemulsion turns light orange-brown. A small amount of ethanol was added for centrifugation, washed with ethanol and deionized water, and dried to obtain nanoscale Ag ( )-PHMB complexes.
Embodiment 3
[0044] Example 3 Nanoscale Ag ( )-PHMB complex synthesis
[0045] (1) Preparation of inverse microemulsion
[0046] Dissolve 1.5 g of 5,5'-dinonyl-2,2'-(α,ω-alkylenedioxy)sodium dibenzenesulfonate (anionic gemini surfactant) in 18 g of heptane and stir until transparent.
[0047] (2) Add 510 μL of 10 g / L PHMB aqueous solution with a viscosity average molecular weight of 5248 to step (1) and stir until clear.
[0048] (3) Add 0.08 mol / L AgNO to step (2) 3 73 μL and stir until clear and colorless.
[0049] (4) Add 0.08 mol / L of K to step (3) 2 S 2 o 8 220 μL, add dropwise NaOH with pH=14
[0050] Adjust the pH of the solution between 9-11, and stir for 18 hours until the inverse microemulsion turns light orange-brown. Add a small amount of ethanol to centrifuge, wash and dry with ethanol and deionized water to obtain nanoscale Ag ( )-PHMB complexes.
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