PMI사의 Capillary flow porometer 를 이용하여 일회용 마스크의 사용기간, 재사용방법에 따른 pore size 변화에 관한 논문자료를 소개합니다

제목 : Do Face Masks become Worthless after Only One Use in the COVID-19 Pandemic?

저자 : Eun-Suk Jang and Chun-Won Kang

초록

Background:

Due to coronavirus disease 2019 (COVID-19), world-wide face mask use is increasing exponentially. These face masks are difficult to recycle, and their accumulation contributes

to enormous environmental threats. In this study, we hypothesize that the face mask can be reused as long as it retains its original structure, which will slow the environmental impacts.

Materials and Methods:

We selected common disposable surgical masks for this study and classified test conditions based on wear time and reuse method. After wearing the mask for 10 hours,

we let it dry naturally in the shade for 14 hours. The specimens were measured by scanning electron microscope and capillary flow porometer.

Results:

The pore structure of the mask did not change when worn 4 times for 10 hours each time, and there was no significant pore structure change when impregnated with ethyl alcohol (purity 95%),

treated with UV or steam, or run through a washing machine.

Conclusion:

The pore structure of the surgical mask was not changed significantly after 40 hours of use. Surgical mask pore structure did not change significantly after treatment with ethyl alcohol,

UV light, steam, or a washing machine.

Keywords:

Face mask; Reuse mask; Pore structure; Capillary flow porometer; COVID-19

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