Effect of Blend Ratio on the Thermal Comfort Characteristics of Cotton/Bamboo Blended Fabrics

ABSTRACT

The present work explains the thermal comfort properties of cotton (100:0), bamboo (0:100), and cotton:bamboo (70:30, 50:50, 30:70) blended yarns/fabrics. The physical characteristics of cotton:bamboo (50:50) blended fabrics show the very closest properties of pure cotton yarn fabrics for the count of 30 tex. The proportion of bamboo fiber in the fabrics influenced the physical properties of the yarn such as areal density, fiber fineness, and other structural parameters. The plain-woven fabric generally aligned as 30 tex in warp direction for pure cotton yarn and 30 tex in weft direction for pure bamboo yarn. Similarly, the experiment is conducted for various proportions and noted that cotton in warp and bamboo in weft direction depicts higher air permeability and water vapor permeability (WVP) compared to all the other fabrics. From the comfort properties of fabrics, the thermal conductivity and the thermal resistance of the blended fabrics were found to be decreased with a gradual increase in the ratio of bamboo fiber. The reduction in inter-yarn space and higher yarn hairiness leads to reduction in air and water permeability values with an increase in cotton proportion. The enhanced WVP and air permeability of the prepared fabrics were observed with an increase in bamboo content.

摘要

本文介绍了棉（100:0）、竹（0:100）和棉:竹（70:30、50:50、30:70）混纺纱/织物的热舒适性能. 棉竹（50:50）混纺织物的物理性能与30 tex纯棉纱织物最接近. 竹纤维在织物中的比例对纱线的面密度、纤维细度等结构参数有影响. 以30 tex纯棉纱经纱方向和30 tex纯竹纱纬纱方向为原料制成的平纹机织物. 同样，对不同比例的织物进行了试验，发现经纱中的棉和纬纱中的竹具有比其他织物更高的透气性和透湿性. 从织物的舒适性能来看，随着竹纤维比例的逐渐增大，混纺织物的导热系数和热阻降低. 随着棉比例的增加，纱间距的减小和纱线毛羽的增加导致透气性和透水性降低. 随着竹纤维含量的增加，织物的透湿性和透气性增强.

KEYWORDS:

• Thermal conductivity
• thermal resistance
• air permeability
• water vapour permeability
• cotton/bamboo
• thermal comfort property