Contact and bioaerosol transmissions are two main routes to spreading infectious diseases. Currently, surface disinfection still relies on frequent cleaning with disinfectants (e.g., bleach, 75% ethanol), while air filters are used to capture bioaersol particles. However, their low efficiency and poor antimicrobial durability pose high risk of pathogenic recontamination to susceptible people such as children, pregnant women and elderly. Here we develop an inorganic-organic microcapsule emulsion for surface and air disinfections by encapsulating biocides with metal compound-polymer shells. The optimized microcapsule emulsion formulation has good physicochemical compatibilities with common materials (e.g., cotton, polymer, ceramics, metals), and can be spray-coated on nonporous surface and porous air filtration media to endow them with multi-functional antimicrobial capabilities. The obtained antimicrobial surface and air filters exhibit excellent and durable antimicrobial and antifouling performances for molds, fungal spores, gram-negative and gram-positive bacteria, and influenza viruses without lowering air flux through filters and filtration efficiency for inorganic particulate matter.

Inorganic-organic microcapsule emulsion for surface and air disinfections

253rd National Meeting (2017)

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