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Evaluation of the Efficiency of Medical Masks and the Creation of New Medical Masks

Evaluation of the Efficiency of Medical Masks and the Creation of New Medical Masks

J T Huang, V I Huang

J Int Med Res. Mar-Apr 2007;35(2):213-23.

PMID: 17542408

Abstract:

The effectiveness of medical masks in preventing respiratory infection was investigated by testing bacterial leakage, filtration efficiency, respiratory resistance and oxygen concentration of the enclosed space. Polypropylene (PP) fibres were treated with dimethyldioctadecylammonium bromide to impart a positive electrical charge capable of attracting bacteria. The fluffed PP fibres were used to make a polypropylene mask and to edge standard surgical and N-95 respirators to prevent leakage. A PP napkin was created by melting and blowing PP. The PP edging seal dramatically reduced bacterial leakage of standard masks and was more effective than adhesive paper tape edging in reducing respiratory resistance. Bacterial or viral filtration efficiency was almost 100% for the PP mask and the PP napkin. The specially designed PP mask with a synthetic adhesive at the edge of the mask may be more effective than the standard surgical mask and the N-95 respirator. The PP napkin is an important tool in preventing the spread of pathogens.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP9003070	Polypropylene (PP)		9003-07-0	Price

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