Abstract
The function of environmental humidity control(B-value) of ultra-high moisture absorbing materials was evaluated using polyacrylic acid fibers. The curve of B-value at 7.5g/V as a function of moisture absorption was as follows: B-value was markedly increased from -0.0236 to -0.0100/°C with increase of moisture content from 0 to 10 wt%, linearly increased for the moisture content from 10 to 40wt% and shown -0.0012/°C at 40wt%. The PAA-3 fiber showing ultra-high moisture content of about 40wt% attained the B-value=0/°C at 15.0g/V. Furthermore, B-values of the mixed fibers, composed of PAN or Cotton of 30 wt% and PAA-2 fiber of 70wt%, were observed as a function of their weight (g/V) and discussed with the relation to the B-values of their components.
