Restructuring of soot particles by surface coatings

• Author / Creator

  Ghazi, Rouzbeh

• The size distribution, volatile mass fraction, effective density, mass concentration and mass-mobility exponent of particles from an inverted burner and a McKenna burner were measured with a Differential Mobility Analyzer (DMA) and a Centrifugal Particle Mass Analyzer (CPMA). Based on these properties a recommendation was made to choose an appropriate burner and flow settings for an investigation on the effect of coating thickness on the morphology of soot particles. Oleic acid and dioctyl sebacate (DOS) was used as a coating material in a wide range of coating thicknesses. It was shown that as the coating mass increases the degree of collapsing increases. A model is presented to predict the change in mobility diameter as a function of coating mass ratio. The change of effective density and shape factor of soot particles in coating/denuding process is also reported.

• Subjects / Keywords

  • Soot
  • Black carbon

• Graduation date

  Fall 2012

• Type of Item

  Thesis

• Degree

  Master of Science

• DOI

  https://doi.org/10.7939/R3CW4R

• License

  This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.