The surface energy of palygorskite

Helmy, Ahmed K.; de Bussetti, Silvia G.; Ferreiro, Eladio Avelino

info:eu-repo/semantics/article

Fecha

2007-02

Registro en:

Helmy, Ahmed K.; de Bussetti, Silvia G.; Ferreiro, Eladio Avelino; The surface energy of palygorskite; Elsevier Science Sa; Powder Technology; 171; 2; 2-2007; 126-131

0032-5910

http://hdl.handle.net/11336/80293

CONICET Digital

CONICET

https://repositorioslatinoamericanos.uchile.cl/handle/2250/4335585

Autor

Helmy, Ahmed K.

de Bussetti, Silvia G.

Ferreiro, Eladio Avelino

Institución

Consejo Nacional de Investigaciones Científicas y Tecnológicas (Argentina)

Resumen

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.

Materias

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