电子束辐照对过滤口罩完整性及过滤效率的影响

IF 0.7 4区物理与天体物理 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Nukleonika Pub Date : 2020-07-25 DOI:10.22541/au.159569105.56056755

D. Chmielewska, Łukasz Werner, U. Gryczka, W. Migdał

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引用次数: 3

摘要

摘要新冠肺炎疫情的爆发表明，对医用口罩和呼吸器的需求超过了目前全球这些物品的库存，迫切需要提高生产能力。考虑到电离辐射已用于医疗产品的灭菌多年，而电子束（EB）辐射能够在短时间内处理大量一次性医疗产品，因此应测试这种方法对口罩的去污作用。在这项工作中，用12kGy和25kGy的电子束照射三种不同的过滤面罩呼吸器（FFR）。结果证实，所有呼吸器辐照后过滤效率的降低是由于在辐照过程中聚丙烯（PP）纤维的电荷被消除所致。此外，所施加的剂量可能会影响PP织物的热稳定性，而过滤材料的结构和完整性在辐照后没有改变。

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Effect of electron beam irradiation on filtering facepiece respirators integrity and filtering efficiency

Abstract The outbreak of the COVID-19 pandemic has shown that the demand for medical masks and respirators exceeds the current global stockpile of these items, and there is a dire need to increase the production capacity. Considering that ionizing radiation has been used for sterilization of medical products for many years and electron beam (EB) irradiation enables the treatment of huge quantities of disposable medical products in a short time this method should be tested for the mask’s decontamination. In this work, three different filtering facepiece respirators (FFRs) were irradiated with electron beams of 12 kGy and 25 kGy. The results confirmed that the decrease in filtration efficiency after irradiation of all respirators results from the elimination of the electric charge from the polypropylene (PP) fibers in the irradiation process. Moreover, the applied doses may affect the thermal stability of PP fabrics, while filtering materials structure and integrity have not changed after irradiation.

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来源期刊

Nukleonika 物理-无机化学与核化学

CiteScore

2.00

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： "Nukleonika" is an international peer-reviewed, scientific journal publishing original top quality papers on fundamental, experimental, applied and theoretical aspects of nuclear sciences. The fields of research include: radiochemistry, radiation measurements, application of radionuclides in various branches of science and technology, chemistry of f-block elements, radiation chemistry, radiation physics, activation analysis, nuclear medicine, radiobiology, radiation safety, nuclear industrial electronics, environmental protection, radioactive wastes, nuclear technologies in material and process engineering, radioisotope diagnostic methods of engineering objects, nuclear physics, nuclear reactors and nuclear power, reactor physics, nuclear safety, fuel cycle, reactor calculations, nuclear chemical engineering, nuclear fusion, plasma physics etc.