Effect of Fiber Structure on Heat of Wetting of Cotton and Regenerated Cellulose Fibers for Sports Underwear
【Supercategory：7. DESCENTE SPORTS SCIENCE Subcategory：7.17 Vol.17】
A new type of calorimeter was constructed for precisely measuring the heat of wetting, with which measurements were made for cotton, negular viscose rayon, high-wet-strength viscose rayon and Tencel® in order to investigate the relationships between the heat of wetting and fiber structure, crystal structure, degree of crystallinity and water regain of the fibers.
It was found that ( 1 ) despite its relatively high water regain, the heat of wetting of cotton is the lowest among the studied fibers and ( 2 ) the heat of wetting of cellulosic fibers is little dependent on fiber structure, crystal structure and crystallite size, but decreases proportionally with increasing degree of crystallinity of the fibers. Furthermore, the heat of wetting has a close relation with the amount of bound water estimated by differential scanning calorimetry. These results were discussed from the viewpoint of designing high-performance cellulosic materials for sports underwear.
DESCENTE SPORTS SCIENCE Vol.17/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
It was found that ( 1 ) despite its relatively high water regain, the heat of wetting of cotton is the lowest among the studied fibers and ( 2 ) the heat of wetting of cellulosic fibers is little dependent on fiber structure, crystal structure and crystallite size, but decreases proportionally with increasing degree of crystallinity of the fibers. Furthermore, the heat of wetting has a close relation with the amount of bound water estimated by differential scanning calorimetry. These results were discussed from the viewpoint of designing high-performance cellulosic materials for sports underwear.
DESCENTE SPORTS SCIENCE Vol.17/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
| Researcher | Chiyomi Mizutani*1, Yoshinobu Tsujii*2, Takeshi Fukuda*2 |
|---|---|
| University or institution | *1 Muhogawa Women's University, *2 Institute for Chemical Research, Kyoto University |
Keywords
Cellulose Fibers, heat of wetting, fiber structure, water regain, bound water