Moisture evaporation behavior from wetted fibers of wool, cotton, hemp and ramie at 40℃ was investigated by thermogravimetry and differential thermal analysis. The drying characteristics of these fibers were determined from these behavior of moisture evaporation.
　The therrnogravimetric curve in a stream of nitrogen was quite different from that in air. The difference may be attributed to the fact that the humidity in a stream of nitrogen is different from that in air Two-step periods of falling rate were shown in the plot of drying rate against the logarithmic moisture content in a stream of nitrogen, and the transition moisture content (Wt) was observed. Drying behavior of wool was remarkably different from those of cotton, hemp and ramie. This may be related to some specific properties and structure of wool fibers. The differential thermal analysis curve of cotton differed from those of hemp and ramie, suggesting the influence of morphological difference between them.

DESCENTE SPORTS SCIENCE Vol.8/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE