Li Xunzhang, Liao Guodong, Cai Wangwang, Yang Jing, Jiang Ruiwen, Wan Jianglong, Zhao Huaixia, Wang Yangxin, Cui Jiaxi
College of Materials Science and Engineering, Nanjing Tech University, 30 South Puzhu Road, Pukou District, Nanjing, 211816, P. R. China.
Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, P. R. China.
Small. 2024 Nov;20(44):e2403334. doi: 10.1002/smll.202403334. Epub 2024 Jul 11.
Textiles with thermal/moisture managing functions are of high interest. However, making the textile sensitive to the surrounding environment is still challenging. Herein, a multimodal smart fabric is developed by stitching together the Ag coated thermal-humidity sensitive thermoplastic polyurethane (Ag-THSPU) and the hybrid of polyvinylidene fluoride and polyurethane (PU-PVDF). The porous PU-PVDF layer is used for solar reflection, infrared emissivity, and water resistance. The Ag-THSPU layer is designed for regulating thermal reflection, sweat evaporation as well as convection. In cold and dry state, the Ag domains are densely packed covering the crystalline polyurethane matrix, featuring low water transmission (102.74 g m·24 h), high thermal reflection and 2.4 °C warmer than with cotton fabric. In the hot and humid state, the THSPU layer is swollen by sweat and expands in area, resulting in the formation of micro-hook faces where the Ag domains spread apart to promote sweat evaporation (2084.88 g/m·24 h), thermal radiation and convection, offering 2.5 °C cooler than with cotton fabric. The strategy reported here opens a new door for the development of adaptive textiles in demanding situations.
具有热湿管理功能的纺织品备受关注。然而，使纺织品对周围环境敏感仍然具有挑战性。在此，通过将涂银的热湿敏热塑性聚氨酯（Ag-THSPU）与聚偏二氟乙烯和聚氨酯的混合物（PU-PVDF）缝合在一起，开发出一种多模式智能织物。多孔的PU-PVDF层用于太阳反射、红外发射率和防水。Ag-THSPU层设计用于调节热反射、汗液蒸发以及对流。在寒冷干燥状态下，银域紧密堆积覆盖结晶聚氨酯基体，具有低透水性（102.74 g·m⁻²·24 h）、高热反射率，比棉织物高2.4°C。在炎热潮湿状态下，THSPU层因汗液膨胀并面积增大，导致形成微钩面，银域在其中散开以促进汗液蒸发（2084.88 g/m·24 h）、热辐射和对流，比棉织物低2.5°C。此处报道的策略为在苛刻环境下开发自适应纺织品打开了一扇新的大门。
