International. Using silicon acrylate and cationic acrylate as functional monomers, a new antibacterial emulsion of siliconacrylate copolymer (SAC) was successfully synthesized by polymerization in soap-free emulsion.
The effect of functional monomers, initiator and temperature on the stability and antibacterial activity of sac emulsion was investigated. Additionally, the morphology, structure and mechanical properties of sac copolymer particles and film were characterized by FTIR, SEM, TEM and TGA. The results revealed that a moderately increasing initiator and reaction temperature could greatly improve conversion and reaction rate in the polymerization system.
Preventing the accumulation of microorganisms
A balanced amount of silicon acrylate (10%) and cationic acrylate (6%) was not only able to increase the crosslinking property of the SAC copolymer, but also endowed the SAC emulsion with good homogeneity and stability. In conclusion, based on a principle of non-toxic and non-biocidal release that could be considered as a green and economical synthetic strategy, the scientists obtained a SAC coating with obvious antibacterial activity and excellent mechanical properties that allowed it to be applied in antifouling coatings to prevent the undesirable accumulation of microorganisms on the surfaces of the substrate.
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