電漿改質濾材塗佈聚苯胺去除生物氣膠之研究

林毅

doi:10.6840/cycu201100887

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电浆改质滤材涂布聚苯胺去除生物气胶之研究

Antibioaerosol Properties of Plasma Modified Polypropylene Filter Coated with Polyaniline

林毅 , 硕士　　导师：　　

繁体中文 DOI： 10.6840/cycu201100887

高周波电浆；聚丙烯不织布滤材；聚苯胺；室内空气品质；表面改质；生物气胶； surface modification ； bioaerosol ； PANI (polyaniline) ； polypropylene filter ； RF plasma ； IAQ (Indoor air quality)

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摘要 │ 参考文献 (50) │ 国际计量

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People pay more and more attention on the influence of indoor bioaerosol, because they spent over 80% of time inside buildings. In this study, polypropylene (PP) non-woven filter was modified by an oxygen-based RF plasma and was coated by polyaniline (PANI) to evaluate the inhibition efficiency of bioaerosols.

PP non-woven filter was modified by an oxygen-based plasma under 30 W, 0.05 torr, 5 sscm O2 and 15 sec. The results of hydrophilic experiments showed the  water absorption efficiency was most effective on the main glow region (2489%)> post-glow region (2205%) >> blank (404%). Additionally, the coating ratio of PANI was 39.0% for modified PP, which was higher than 23.4% for unmodified PP. Furthermore, after three times desorption by ultrasonic shaking, the residual PANI was still 26.7%.

The inhibition efficiency of E. coli was 100% under 12.0% coated PANI on PP. The inhibition efficiency of Bacillus subtilis spores was 99.6% under 5.0% coated PANI on PP. The inhibition efficiency of Staphylococcus aureus was 100% under 23.7% coated PANI on PP. 
The results of the pilot test showed that the filtration efficiency of E coli was similar between modified PP (67.7%, under 30 W, 15 sec, 11.4% coated PANI) and unmodified PP (71.2%). The persistent inhibition efficiency of E.coli on unmodified PP for 30 min still duration after filtration was 30% comparing with 0 min. It was near 80% on modified PP for the same condition. The persistent inhibition efficiency reached 100% while duration extending to 120 min. Additionally, the filtration efficiency of Bacillus subtilis spores was 42.7% for unmodified PP, however, it was only 11.0% for modified PP. It was possibly because of the static electricity on unmodified PP leading to high filtration efficiency for Bacillus subtilis spores. No persistent inhibition efficiency of Bacillus subtilis spores was found on unmodified PP for 30 min still duration after filtration. It was 67.7% for modified PP for 30 min still duration, and reached to 100% for 120 min still duration after filtration. 
This study proved that not only the coating ratio of PANI was improved, but the inhibition efficiency of bioaerosols for the modified PP by an oxygen-based RF plasma. The test result of PANI coated PP further implied its potential application on indoor air quality improvement.

参考文献 ( 50 ) 〈TOP〉

ACGIH (American Conference of Governmental Industrial Hygienist), “Threshold limit values and biological exposure indices”, 2010. (http://www.acgih.org/home.htm)
连结：
Chen, C. C., Huang, S. H., “The effects of particle charge on the performance of a filtering facepiece”, Am. Ind. Hyg. Assoc. J., 59, 227-233, 1998.
连结：
Cox, C. S., Nowoisky, J. F., Klose, M., Conrad , R., Andreae, M. O.,”Characterization of primary biogenic aerosol particles in urban rural and high-alpine air by DNA sequence and restriction fragment analysis of ribosomal RNA genes”, Biogeosciences, 4, 1127-1141, 1995.
连结：
Elsevier “Cleaner Healthier Environments: AFFCO Enhances Air Filter Performance with Electret Composites”, Filtr Separat, 35,118-122, 1998.
连结：
Fan, L., Song, J., Hildebrand, P. D., Forney C. F., “Interaction of ozone and negative air ions to control micro-organisms”, J. Appl. Microbiol., 93(1), 144-148, 2002.
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DOI可强化引用精确性、增强学术圈连结，并给予使用者跨平台的良好使用经验，目前在全世界已有超过五千万个对象申请DOI。如想对DOI的使用与概念有进一步了解，请参考（）。