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논문 기본 정보

자료유형
학술저널
저자정보
정재연 (서울대학교) 이주영 (서울대학교)
저널정보
한국의류산업학회 한국의류산업학회지 한국의류산업학회지 제23권 제3호
발행연도
2021.1
수록면
406 - 414 (9page)

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초록· 키워드

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This study aimed to evaluate the inhalation resistance(IR) and fiber structure of disposable masks when exposed to repeated heating and ultraviolet(UV) sterilization. The experiments consisted of a lab-scale and a field test. For the lab-scale test, KF94 and N95 masks were selected and a trial was composed of three repetitions of an 80-min sterilization. For the field test, a subject participated over four days, of which a KF94 was worn without sterilization, and the same trial was con- ducted during the next four days with daily sterilization. The results showed that the IR of the KF94 mask(9.5 Pa) grad- ually increased according to the sterilization up to the second repetition(15.6 Pa) but decreased at the third treatment(9.7 Pa). However, the N95 mask did not showany tendency of IR during the repetitions. Microscope photos showed several warped or blackened fibers in the stiffener layer after the repeated sterilization. After wearing a KF94 mask for four con- secutive days, its IR decreased until the three days but increased the fourth day, whereas another KF94 mask with ster- ilization showed an increase in IR for the four days. In the microscope-photos after the consecutive four days, outside fibers and stiffener layers were warped or became less dense. In summary, the IR of the KF94 mask slightly increased through the three~four rounds of heating and UV sterilizations, but the fiber structures were not significantly deformed by the repeated sterilization. To reduce discarded mask waste, the repeated sterilization of masks can be recommended.

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