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An experimentally simple method for measuring sorption isotherms

Wadsö, Lars LU ; Svennberg, Kaisa LU and Dueck, Ann LU (2004) In Drying Technology 22(10). p.2427-2440
Abstract
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.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
saturated salt solutions, sorption isotherm, measurement method, glass, jar
in
Drying Technology
volume
22
issue
10
pages
2427 - 2440
publisher
TAPPI
external identifiers
  • wos:000225818900016
  • scopus:11144302636
ISSN
1532-2300
DOI
10.1081/DRT-200032898
language
English
LU publication?
yes
id
fed29fa9-05fd-4e46-9b46-64764df9e19a (old id 258947)
date added to LUP
2007-11-05 07:35:04
date last changed
2017-11-19 03:39:26
@article{fed29fa9-05fd-4e46-9b46-64764df9e19a,
  abstract     = {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.},
  author       = {Wadsö, Lars and Svennberg, Kaisa and Dueck, Ann},
  issn         = {1532-2300},
  keyword      = {saturated salt solutions,sorption isotherm,measurement method,glass,jar},
  language     = {eng},
  number       = {10},
  pages        = {2427--2440},
  publisher    = {TAPPI},
  series       = {Drying Technology},
  title        = {An experimentally simple method for measuring sorption isotherms},
  url          = {http://dx.doi.org/10.1081/DRT-200032898},
  volume       = {22},
  year         = {2004},
}