Cheng Jinxue, Bai Jiulin, Guo Junyu, Yu Xiaoliang, Fan Zhi, Guo Minjie, Cheng Bowen
College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin 300457, P. R. China.
State Key Laboratory of Biobased Fiber Manufacturing Technology, Tianjin University of Science and Technology, Tianjin 300457, P. R. China.
ACS Appl Mater Interfaces. 2024 Oct 16;16(41):56448-56458. doi: 10.1021/acsami.4c15493. Epub 2024 Oct 3.
The growing high standard of people's wear has put forward requirements for fabrics, and multifunctional fabrics have been developed precisely in response to the requirements of the times. However, the incineration of waste fabrics produces a large amount of pollutants, resulting in a massive waste of resources and environmental pollution. Herein, the degradable nanofiber yarns (NYs) with self-cleaning properties were fabricated by in situ growth of SiO nanoparticles on the surface of the electrospun poly(-dioxanone) (PPDO) NYs using the Stöber method. Then, the PPDO NYs were blended with carbon fibers and the PPDO/SiO NYs with themselves to form the Janus PPDO fabrics, respectively. The Janus PPDO fabric offered asymmetric wettability and dual personal thermal management properties. The PPDO/C side of the Janus PPDO fabric provided 65.8 °C at 1.5 V or 58.5 °C under one sunlight intensity for radiative heating. The PPDO/SiO side exhibited high solar reflectivity (81.8%) and mid-infrared (MIR) emissivity (99.1%), which reduced the skin temperature by 4.6 °C, resulting in radiative cooling. Moreover, the Janus PPDO fabrics display an excellent electromagnetic interference (EMI) shielding performance (53.3 dB). Therefore, yarn-based degradable Janus fabric has a promising future in multifunctional wearable products.
人们穿着标准的不断提高对织物提出了要求，多功能织物正是顺应时代要求而开发的。然而，废弃织物的焚烧会产生大量污染物，导致资源的大量浪费和环境污染。在此，采用施托伯法在静电纺丝聚（对二氧环己酮）（PPDO）纳米纤维纱（NYs）表面原位生长SiO纳米颗粒，制备了具有自清洁性能的可降解纳米纤维纱。然后，将PPDO纳米纤维纱分别与碳纤维以及PPDO/SiO纳米纤维纱自身进行混合，形成双面PPDO织物。双面PPDO织物具有不对称润湿性和双重个人热管理性能。双面PPDO织物的PPDO/C面在1.5 V电压下可提供65.8℃的温度，在一个太阳光强度下可提供58.5℃的温度用于辐射加热。PPDO/SiO面具有高太阳反射率（81.8%）和中红外（MIR）发射率（99.1%），可使皮肤温度降低4.6℃，实现辐射冷却。此外，双面PPDO织物还具有优异的电磁干扰（EMI）屏蔽性能（53.3 dB）。因此，基于纱线的可降解双面织物在多功能可穿戴产品中具有广阔的应用前景。
