关键词: 等离子体调控, 竹盖涤双层织物, 湿单向传输, 疏水整理, 湿舒适性

Abstract: In response to the national call for public participation in healthy weight management, the demand for functional textiles that enhance comfort and physiological protection is increasing. As a key factor influencing wear comfort, moisture comfort can be enhanced by constructing asymmetric wettability interfaces that enable one-way transport and reverse blocking of sweat, which jointly enhance wear experience and garment functionality. One-way moisture-transport fabrics can guide sweat from the inner to the outer surface and block reverse flow. These fabrics help maintain a dry and comfortable microclimate, prevent thermal discomfort, and reduce skin disease risks. Developing high-performance one-way moisture-transport fabrics supports the national health strategy and has become a research hotspot in functional apparel. Currently, one-way moisture-transport ability of fabrics is usually achieved by weaving or knitting advanced or composite functional yarns into fabrics or via fabric finishing with chemical auxiliaries. These techniques inevitably lead to increased production cost and even severe environmental pollution as well as limited performance stability. Combining yarn hydrophobic finishing with plasma treatment is a promising strategy for enhanced fabric performance and durability as it can reduce the use of chemical agents and production costs, making the process more environmentally friendly. In this study, hydrophobic finishing was applied to bamboo yarns, which were then knitted with polyester textured yarns to produce bamboo-capped polyester fabrics by a circular knitting machine. Subsequently, plasma treatment was used to modify the moisture absorption and wicking properties of the polyester surface, forming the wetting gradient effect for one-way moisture-transport fabrics. The moisture could be transported from the hydrophobic side to the hydrophilic side due to the pressure difference created by surface wettability. This study investigated the effects of plasma treatment parameters on the fabric's one-way transport capacity. The surface morphology, contact angle, liquid moisture management, moisture absorption, air permeability, and handle of the fabric before and after treatment were also investigated. The durability of plasma treatment was also analyzed. Results showed that when the plasma treatment power was 7 kW and the treatment time was 2 min, the accumulative one-way moisture-transport capacity of the fabric was 1,051.25, while the drip diffusion time was less than 1.0 s. In contrast, the untreated fabric exhibited an average accumulative one-way moisture-transport capacity of 349.35, and the drip diffusion time was more than 60 s. Plasma treatment significantly improved one-way moisture-transport capacity of the bamboo-capped polyester fabric. Moreover, the treated fabric exhibited better air permeability in wet state and retained similar handle to the untreated fabric. Its one-way moisture-transport capacity can be remained even after one week. This study provides reference for efficient and eco-friendly preparation of one-way moisture-transport fabrics.

Key words: plasma-treated, bamboo-capped polyester fabric, one-way moisture-transport, hydrophobic finish, moisture comfort