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Radiation and filtration are essential tools for microbial control, targeting microorganisms through distinct mechanisms. Radiation eliminates microbes by damaging their DNA, either killing them or inhibiting their growth. Based on wavelength, radiation is classified into two types: nonionizing and ionizing radiation.Non-ionizing radiation, such as UV radiation (200–400 nm), is absorbed by DNA, causing defects that effectively disinfect surfaces, air, and water, including safety cabinets.
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Extending the Protection Ability and Life Cycle of Medical Masks through the Washing Process.

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Washing disposable medical face masks at home or in a lab can maintain their protective qualities, making them reusable. Controlled washing procedures, especially with disinfectants, help preserve barrier properties for safe reuse.

Keywords:
air permeabilityantimicrobial activitydetergentdidecyldimethylammonium chloridemedical masksresidualswashing

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Area of Science:

  • Materials Science
  • Environmental Science
  • Infectious Disease Control

Background:

  • Disposable medical face masks generate significant environmental waste.
  • Reusable masks offer a sustainable alternative to reduce this burden.

Purpose of the Study:

  • To evaluate the reusability of decontaminated polypropylene medical face masks.
  • To assess the impact of various washing conditions on mask quality and functionality.

Main Methods:

  • Washing masks using household and laboratory procedures at 50°C.
  • Analyzing barrier properties (contact angle, air permeability, antimicrobial resistance).
  • Conducting material analysis (FTIR, pH, residual surfactants, spectral characteristics).

Main Results:

  • Household washing altered functional properties, particularly air permeability, more than laboratory washing.
  • The disinfectant didecyldimethylammonium chloride enhanced protective abilities.
  • Controlled washing preserved essential barrier properties for mask reusability.

Conclusions:

  • Washing medical face masks under controlled laboratory conditions can maintain their quality and functionality.
  • The addition of specific disinfectants supports the potential for safe and effective mask reuse.
  • This research provides a basis for developing protocols for decontaminating and reusing disposable medical masks.