Abstract: The paper investigates the moisture-absorbing and sweat-exhausting process of fabric and the capillary effect when sweat diffusing in fabric. It claims that improving the hydrophilic property of fabric and the capillary effect between fibers in the fabric is an effective measure for improving the moisture-absorbing and sweat-exhausting function of the fabric. On this basis, the paper makes an attempt to improve the hydrophilic property of fiber via chemical modifications such as poly-blending and copolymerization, and improve the capillary effect between fibers via physical modifications such as profiled cross-section, fine-denier and rough surface. Furthermore, by combining physical modifications with chemical modifications, a new modified polyester fabric is developed, which is featured by further improved moisture-absorbing & sweat-exhausting function. Additionally, a one-way moisture-transport fabric is also developed.

Key words: polyester fiber; hydrophilic property; capillary effect; moisture-absorbing & quick-drying property; one-way moisture transport