Antibacterial degradable polymer as well as preparation method and application thereof
A technology for degrading polymers and composite polymers, applied in the field of polymer materials, can solve the problems of poor brittle film-forming properties, limited direct application, and poor water vapor barrier properties.
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[0047] A preparation method of an antibacterial degradable polymer, said method specifically comprising the steps of:
[0048] 1. The chlorinated polypropylene carbonate C-PPC solution is made into a C-PPC film through a film-forming process;
[0049] Ⅱ. The C-PPC film obtained in step I is subjected to plasma treatment, and the C-PPC film after plasma treatment is subjected to ultraviolet grafting reaction with methacrylic acid MA and methacrylic acid betaine SBMA molecules to obtain C -PPC-g-P(SBMA-co-MA);
[0050] III. Combining the C-PPC-g-P(SBMA-co-MA) obtained in step II with the active factor to finally obtain an antibacterial degradable polymer.
[0051] Preferably, in the step I, the preparation method of the C-PPC film specifically includes:
[0052] Ⅰ-1. Prepare a C-PPC film from a C-PPC solution with a mass concentration of 8-13% through a film-forming process;
[0053] 1-2. Place the C-PPC film obtained in step 1-1 in a vacuum oven at room temperature and dry t...
Embodiment 1
[0071] A preparation method of an antibacterial degradable polymer, said method specifically comprising the steps of:
[0072] Ⅰ. Prepare a C-PPC solution with a concentration of 9%, take 100 μL dropwise on the homogenizer with a pipette gun, set the rotation speed at 8500 rpm, and process for 30 seconds to obtain a C-PPC film, which is placed in a vacuum oven to dry at room temperature to constant weight. Then put it into the plasma, the power is 100W, and take it out after 60s of treatment.
[0073] Ⅱ. Take 0.25g of methacrylic acid (MA) and methacrylic acid sulfobetaine (SBMA) and add 1g of water. After preparing the solution, use a pipette gun to take 100μL and drop it on the C-PPC membrane after plasma treatment. , transferred to an ultraviolet microwave-ultraviolet-ultrasonic trinity synthesizer, the ultraviolet wavelength is 365nm, the power is 300W, and the ultraviolet treatment is 10min to obtain C-PPC-g-P(SBMA-co-MA).
[0074] Ⅲ. Prepare a lysozyme (LYZ) / PBS soluti...
Embodiment 2
[0076] A preparation method of an antibacterial degradable polymer, said method specifically comprising the steps of:
[0077] Ⅰ. The concentration of the C-PPC spinning solution is 10%, the inner diameter of the spinning needle is 0.41mm, the spinning voltage is 6kV, the pushing speed is 0.08mm / min, the speed of the receiving roll is 20rpm, the receiving distance is 10cm, and the spinning The temperature is 25° C., the humidity is 40%, and the C-PPC film is obtained by spinning. The C-PPC film was dried to constant weight in a vacuum oven at room temperature.
[0078] Ⅱ. Put the C-PPC film into the plasma, set the power to 100W, take it out after 70s of treatment, and transfer it to the trinity synthesizer of ultraviolet microwave-ultraviolet-ultrasonic wave. Take 0.55 g of methacrylic acid (MA) and methacrylic acid sulfobetaine (SBMA) and add 2.2 g of water, and after preparing the solution, take 200 μL with a pipette and drop it on the C-PPC membrane after plasma treatment...
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