Antibacterial crosslinked nanoparticles and preparation method thereof
A nanoparticle and antibacterial technology, applied in the field of antibacterial cross-linked emulsion and its preparation, can solve the problems of many additives and uneven particle size distribution of the product, and achieve the effects of simple operation, less harsh preparation conditions and good antibacterial effect.
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[0026] Synthesis of water-soluble homopolymer PDMAEMA as a macromolecular chain transfer agent
[0027] The homopolymer PDMAEMA was prepared by solution polymerization using tetrahydrofuran (THF) as solvent. In molar ratio [DMAEMA] 0 / [CPDN] 0 / [AIBN] 0 = 60 / 3 / 0.5 as an example, chain transfer agent CPDN (325.5 mg, 1.20 mmol), initiator AIBN (65.5 mg, 0.40 mmol), monomer DMAEMA (4.0 mL, 23.7 mmol) and THF (1.4 mL) were added into an ampoule equipped with a magnetic stirring bar, after three freezing-pumping-thawing deoxygenation operations, the ampoule bottle mouth was flame-melted and sealed, and placed in an oil bath with a pre-set temperature (70°C) for reaction. After the polymerization reaction reached a certain period of time, the ampoule was taken out and immersed in an ice-water bath to cool down to quench the reaction. Scratch the mouth of the bottle, take a small amount of reaction solution and dissolve it in D 2 O, NMR characterization was performed to determ...
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