Relationship between wettabilities and chemical compositions of candle soots

FUEL

卷:128

Article

Liang, Can-Jian¹  Liao, Jue-Dong¹  Li, An-Jie¹  Chen, Can¹  Lin, Hui-Yi¹  Wang, Xian-Ju²  Xu, Yue-Hua¹ 

[1] South China Agr Univ, Coll Sci, Inst Biomat, Guangzhou 510642, Guangdong, Peoples R China

[2] South China Agr Univ, Coll Sci, Dept Appl Phys, Guangzhou 510642, Guangdong, Peoples R China

关键词: Candle soot;    Superhydrophobic;    Hydrophilic;    Superoleophilic;    Oleophilic;   

DOI  :  10.1016/j.fuel.2014.03.039

来源: Elsevier

【 摘 要 】

The soot particles formed in the inner flame region and the flame tip of a paraffin candle were collected, and their morphologies and chemical compositions have been studied. The wettabilities of the soot particles were also investigated through dispersing the soot particles in water, trichloromethane or glycerin, and dropping these solvents on the surface of the soot particles. The results show that the inner flame soot particles are superhydrophobic and superoleophilic, because they are relatively large particles and aggregated, and are mostly composed of organics. The flame tip emits ultrafine particles, which mainly consist of elemental carbon and ash, and the flame tip soot particles are loose aggregates. So the flame tip soot particles are hydrophilic and oleophilic. (C) 2014 Elsevier Ltd. All rights reserved.

【 授权许可】

Free