107 0 0 0 OA 市販マスクの走査電子顕微鏡による観察
- 著者
- 尾家 重治 河合 伸也
- 出版者
- 一般社団法人日本医療機器学会
- 雑誌
- 医療機器学 (ISSN:18824978)
- 巻号頁・発行日
- vol.92, no.1, pp.14-18, 2022 (Released:2022-04-05)
- 参考文献数
- 16
The fabric structures of re-usable (cotton, polyurethane, polyester 95% with polyurethane 5%, polyester 95% with spandex 5%) face masks compared to disposable non-woven masks were observed under scanning electron microscopy. We found re-usable face masks in general have homogeneous pore sizes of approximately 0.1 - 0.5 mm. In comparison, non-woven masks have two fiber layers separated by one densely non-woven labyrinthine layer with disordered three dimensional microfibers. We found most (7 out of 8) non-woven masks shared this similar dense second layer composition. Our observation for masks under the electron microscopy provides structural evidence underlying infection-preventing superiority of non-woven over re-usable (cotton, polyurethane, polyester 95% with polyurethane 5%, polyester 95% with spandex 5%) face masks. Furthermore, we found that non-woven masks do not always have the disordered dense middle layer, which suggests that some products of non-woven masks may not provide equal protection for infection.
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マスクは有効
これだけみっちり詰まっていれば、粒子はどこかにぶつかるか吸い寄せられて吸着されるでしょ。。。
https://t.co/R3Wd9RtCiM
https://t.co/6YtpFPeZ8L
「2層目が密な立体構造となっており、感染者からの微生物の飛散防止効果のみならず，感染防止効果もあると推定される．」 https://t.co/FwuWoGr4z8