| Title: | Dependence of volatile droplet lifetime on the hydrophobicity of the substrate |
| Author(s): | Shanahan ME; Sefiane K; Moffat JR; |
| Address: | "Universite de Bordeaux, Institut de Mecanique et d'Ingenierie de Bordeaux (I2M), CNRS UMR 5295, Bat. A4, Cours de la Liberation, 33405 TALENCE Cedex, France" |
| ISSN/ISBN: | 1520-5827 (Electronic) 0743-7463 (Linking) |
| Abstract: | "In this Article, we demonstrate the dependence of the lifetime of a volatile droplet on the hydrophobicity of the substrate. Ethanol droplets placed on the molecularly smooth surfaces of three polymers, applied to substrates by spin-coating, showed distinct types of behavior depending on the hydrophobicity of the latter. High contact angles, theta, lead to fairly regular recession of the triple line during liquid evaporation at essentially constant theta, whereas low contact angle caused pinning, theta decreasing with time. The latter case leads to shorter drop lifetimes" |
| Keywords: | Ethanol/chemistry Half-Life *Hydrophobic and Hydrophilic Interactions Polymers/*chemistry Surface Properties Volatile Organic Compounds/*chemistry; |
| Notes: | "MedlineShanahan, M E R Sefiane, K Moffat, J R eng 2011/03/26 Langmuir. 2011 Apr 19; 27(8):4572-7. doi: 10.1021/la200437s. Epub 2011 Mar 24" |
