Vapor-Sorption Coupled Diffusion in Cellulose Fiber Pile Revealed by Magnetic Resonance Imaging

Vapor-Sorption Coupled Diffusion in Cellulose Fiber Pile Revealed by Magnetic Resonance Imaging

Xiaoyan Ma, Benjamin Maillet, Laurent Brochard, Olivier Pitois, Rahima Sidi-Boulenouar, and Philippe Coussot

Moisture transport or storage in fabrics plays a major role on the comfort or discomfort of clothes or the efficiency of masks. Thanks to unique experiments with an original MRI technique the complete information on the bound water (absorbed in the solid structure) distribution in time was obtained during the drying of a model textile, i.e. a cellulose fiber pile. We then show that these evolutions can be exactly predicted, without any parameter fitting, by a model assuming continuous local sorption equilibrum inside the material. These results open the way to the prediction of wetness and heat transfer properties of fabrics under any conditions, and the improvement of hygrothermal models for bio-based construction materials.

Phys. Rev. Applied 17, 024048
Corresponding Authors: Philippe Coussot

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