Abstract
Moisture equilibrium isotherms are very important in drying and storage processes analysis. So, the DEQ/UEM process separation group is building a data bank for cellulose, paper, and textile isotherms and their fit with available literature equations. In this context, the experimental isotherms of a brazilian specific commercial paper, the KLABIN-PR KLAPAK commercial liquid package paper were obtained. The experimental equilibrium data were obtained by exposing the material to different ambient conditions of temperature and relative humidity controlled by the use of saline solutions. The samples were placed in glass flasks left inside an oven to provide a better adjust of temperature conditions, being periodically weighed until constant weight. KLAPAK moisture equilibrium isotherms were built from the obtained experimental results and temperature effects on its behavior were analyzed. Then, these results were fitted with the help of some models and equations available from literature.
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