Analyte:
Equipment:
Vapour sorption apparature, composed of:
Evaluation methods and targets:
Application examples:
Contact person:
Dr. Carola Fanter
Research Division
Biopolymers
Tel.: +49 (0) 331-568-1515
Fax: +49 (0) 331-568-2515
e-mail: carola.fanter@iap.fraunhofer.de
- solid samples with sensitivity of water vapour
- samples can used dry or wet
- 0,5 – 1 g sample material (dependent of specific surface)
Equipment:
Vapour sorption apparature, composed of:
- Temperature controlled chamber for samples
(variance of temperature: 5 to 50 °C) - Cahn-balance
Evaluation methods and targets:
- Determination of water vapour sorption by variable rel. moisture (0 to 98%) and constant temperature (equilibrium moistere content)
- Determination of sorption and desorption-isotherms
- kinetic measurement of water vapour sorption by constant rel. moisture and temperature
- application of other solvents – restricted possible
- calculation of specific surface by taking as a basis of special analysis software
Application examples:
- Determination of water vapour sorption of bead cellulose
- Determination of sorption dates of foamed chitosan
- Determination of sorption kinetic of wood chips
Contact person:
Dr. Carola Fanter
Research Division
Biopolymers
Tel.: +49 (0) 331-568-1515
Fax: +49 (0) 331-568-2515
e-mail: carola.fanter@iap.fraunhofer.de