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An experimentally simple method for measuring sorption isotherms

På svenska

Author

Summary, in English

We describe a simple, yet practical and precise. way of measuring sorption isotherms with each sample in its own glass jar with a saturated salt solution. The measurements are done with below-balance weighing and with the sample kept inside the closed jar during the whole measurement period, providing constant relative humidity (RH) conditions. The technique has been tested on microcrystalline cellulose and bentonite clay. The agreement with literature values was good; the differences seen for bentonite at high RH are discussed in terms of the slow attainment of equilibrium for this material.

Publishing year

2004

Language

English

Pages

2427-2440

Publication/Series

Drying Technology

Volume

22

Issue

10

Document type

Journal article

Publisher

TAPPI

Topic

  • Building Technologies
  • Materials Engineering

Keywords

  • saturated salt solutions
  • sorption isotherm
  • measurement method
  • glass
  • jar

Status

Published

ISBN/ISSN/Other

  • ISSN: 1532-2300