The surface energy of palygorskite

✍ Scribed by Ahmed K. Helmy; Silvia G. de Bussetti; Eladio A. Ferreiro

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 274 KB
• Volume: 171
• Category: Article
• ISSN: 0032-5910
• DOI: 10.1016/j.powtec.2006.10.006

✦ Synopsis

An average value for the surface energy (γ ¯S) of palygorskite was determined from experimental data of spreading pressure, the surface tension of water and its contact angle using a formula based on the combination of the Young equation with a general equation of pair interaction. The value found is 226.6 mJ m -2 . Some factors that affect the determination of surface energy via solid-liquid interaction are exposed. The backgrounds of previous formulas for the calculation of the surface energy of palygorskite are also critically examined.