Drying Regimes on Regenerated Cellulose Films Characteristics and Properties

Abundant water content and its interaction with cellulose macromolecules through hydrogen bonding engenders a complex drying process, the circumstances of which have not yet been unveiled. For instance, excessive drying on regenerated cellulose membranes (RCM) causes cracking and severe shrinking, a...

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Bibliographic Details
Published in:Membranes (Basel) 2022-04, Vol.12 (5), p.445
Main Authors: Ibrahim, Nur Ain, Salleh, Kushairi Mohd, Fudholi, Ahmad, Zakaria, Sarani
Format: Article
Language:English
Subjects:
activation energy
Cellulose
Drying
drying model
Drying ovens
effective diffusion
High temperature
Hydrogen bonding
Kinetics
Macromolecules
Mathematical analysis
Mathematical models
Mechanical properties
Moisture content
Physical properties
Quality control
Temperature
Tensile properties
Variance analysis
Water content
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Summary:Abundant water content and its interaction with cellulose macromolecules through hydrogen bonding engenders a complex drying process, the circumstances of which have not yet been unveiled. For instance, excessive drying on regenerated cellulose membranes (RCM) causes cracking and severe shrinking, affecting the produced regenerated cellulose film (RCF). Thus, mathematical models in estimating the drying kinetics and required energy to dry RCM are necessary. This study evaluated two drying techniques of oven drying and infrared (IR) drying on RCM at different temperatures of 50-80 °C. Five mathematical models were used, namely Newton, Page, Handreson-Pabis, logarithmic, and Wang-Singh, to adjust the obtained experimental data and were statistically validated using ANOVA to review their effect on the quality of the produced RCF. A logarithmic model and a Wang-Singh model were the best models for oven drying and IR drying of RCM, respectively. It was found that the physical property of the RCF was similar to all drying types. Meanwhile, for mechanical properties, the high temperature of oven drying affected the tensile properties of RCF compared with IR drying. This study is beneficial by approximating the drying kinetics of RCM and defining appropriate drying conditions, which controls the quality of its predictive physical and mechanical properties.
ISSN:2077-0375
2077-0375
DOI:10.3390/membranes12050445