Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
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Development and Performance Evaluation of Aerosol Generator of MWCNTs for Inhalation Toxicology

흡입 독성 평가를 위한 다중벽 탄소나노튜브의 에어로졸 발생장치 개발 및 성능 평가

  • Lee, Gun-Ho (Department of Mechanical Engineering, Hanyang University) ;
  • Jeon, Ki Soo (Department of Mechanical Engineering, Hanyang University) ;
  • Yu, Il Je (Institute of Nano Product Safety Research, Hoseo University) ;
  • Ahn, Kang-Ho (Department of Mechanical Engineering, Hanyang University)
  • 이건호 (한양대학교 기계공학과) ;
  • 전기수 (한양대학교 기계공학과) ;
  • 유일재 (호서대학교 나노 제품 안전성 연구소) ;
  • 안강호 (한양대학교 기계공학과)
  • Received : 2013.11.24
  • Accepted : 2013.12.18
  • Published : 2013.12.30
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Abstract

Carbon nanotubes (CNTs) are one of the nanomaterials that were discovered by Iijima in 1991 for the first time. CNTs have long cylindrical and axi-symmetric structures. CNTs are made by rolling graphene sheets. Because of their large length-to-diameter ratio, they are called nanotubes. CNTs are categorized as single-walled carbon nanotubes (SWCNTs) or multi-walled carbon nanotubes (MWCNTs) based on the shell structures. CNTs are broadly used in various fields, such as scanning probe microscopy, ultra fine nano balance and medicine, due to their extraordinary thermal conductivity, electrical and mechanical properties. Because long, straight CNTs have the same shape as asbestos, which cause cancer in cells lining the lung, there have been many studies on the effects of MWCNTs on human health that have been conducted. Stable atomization of CNTs is very important for the estimation of inhalation toxicity. In the present study, electro-static assisted axial atomizer (EAAA), which is the instrument that uses MWCNTs and aerosolizes them by transforming the single fiber shape using ultrasonic dispersion and electric field, was invented. EAAA consists of a ultrasonic bath for dispersion of MWCNTs and a particle generator for atomizing single fibers. The performance evaluation was conducted in order to assess the possibilities of 6-hour straight atomization with stability, which is the suggested exposure time in a day for the estimation of inhalation toxicity.

Keywords

Acknowledgement

Supported by : 미래창조과학부

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