Abstract
The relation between the change in moisture content during the measurement of B-value and the moisture sorption-desorption isotherm was studied for the moisture sensitive textiles of cotton fabric, woollen fabric and NF-38 non-woven fabric. The change of the moisture content in a closed vessel under periodic change of temperature between T1 and T2 agreed well with the difference between the moisture contents along the moisture sorption isotherm at lower temperature T1 and desorption isotherm at higher temperature T2. The calculated relation curve, based on this finding, between B-value and weight of each textile for the volume of a closed vessel agreed well with the observed one. This means the textiles having the desired B-value can be designed from the moisture sorption-desorption isotherm of the constituent fibers.
