Determining the Contact Angle of a Nonwetting Liquid in Pores by Liquid Intrusion Calorimetry

Autor:	J. Rouquerol, and R. Denoyel, F. Gomez
Rok vydání:	2000
Předmět:	Work (thermodynamics) Chemistry Analytical chemistry Surfaces and Interfaces Porosimetry Calorimetry Condensed Matter Physics Contact angle Wetting transition Electrochemistry General Materials Science Wetting Composite material Porosity Mesoporous material Spectroscopy
Zdroj:	Langmuir. 16:4374-4379
ISSN:	1520-5827 0743-7463
Popis:	A microcalorimetric method is proposed to determine the contact angle of a nonwetting liquid within a mesoporous solid. It is based on the simultaneous measurement of the heat and work of wetting, as the pressure is raised. The method simply requires a previous determination of the surface area to be wetted. It allows one to carry out liquid intrusion porosimetry without any a priori assumption on the contact angle. This method is, in principle, applicable to mercury porosimetry. Its feasibility is shown here for water in porous hydrophobic silicas.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::410baa2408c688dba2dbaac68c43f130 https://doi.org/10.1021/la9914256 Zobrazit plný text záznamu