Characterization of gels via solvent desorption measurements

详细信息    查看全文

• 作者：Cedric J. Gommes ; Francis Noville and Jean-Paul Pirard
• 关键词：Gels ; Desorption ; Drying ; Plastic deformation ; Capillary stress
• 刊名：Adsorption
• 出版年：2007
• 出版时间：December, 2007
• 年：2007
• 卷：13
• 期：5-6
• 页码：533-540
• 全文大小：313.8 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Surfaces and Interfaces and Thin Films
  Industrial Chemistry and Chemical Engineering
  Engineering Thermodynamics and Transport Phenomena
  
• 出版者：Springer Netherlands
• ISSN：1572-8757

文摘

The present paper shows how a standard volumetric adsorption device can be used to measure solvent desorption isotherms on gels. As gels are very soft materials, they shrink significantly during the measurement, and the data have to be analyzed in terms of the mechanical properties of the gel’s skeleton. Methanol desorption isotherms are measured on a series of silica gels, and the results are compared with independent characterizations, notably beam bending.