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 Title: Influence of Soluble Surface-Active Organic Material on Droplet Activation Author(s): Li, Zhidong Doctoral Committee Chair(s): Rood, Mark J. Department / Program: Civl and Environmental Engineering Discipline: Civl and Environmental Engineering Degree Granting Institution: University of Illinois at Urbana-Champaign Degree: Ph.D. Genre: Dissertation Subject(s): Physics, Atmospheric Science Abstract: Both theoretical and experimental approaches also show that despite the a depression, S$\sb{\rm c}$ of a particle that contains SDS is always higher than that of a pure NaCl particle with the same dry size. The degree of this deviation increases with increasing SDS% in the mixtures, indicating an increase in hydrophobicity with increasing SDS% in the initially dry particles. The lowering of Raoult effect due to the large molecular weight of SDS is attributable to this trend. It appears that in the atmosphere, only those particles that contain soluble surfactants, whose molecular weight is comparable to (NH$\sb4)\sb2$SO$\sb4$ and meanwhile are very surface active, can achieve low S$\sb{\rm c}$ comparable to that of (NH$\sb4)\sb2$SO$\sb4$ particles. Issue Date: 1997 Type: Text Language: English Description: 125 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1997. URI: http://hdl.handle.net/2142/83426 Other Identifier(s): (MiAaPQ)AAI9717301 Date Available in IDEALS: 2015-09-25 Date Deposited: 1997
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