Smart Cellulose-Based Janus Fabrics with Switchable Liquid Transportation for Personal Moisture and Thermal Management

IF 26.6 1区材料科学 Q1 Engineering Nano-Micro Letters Pub Date : 2024-09-26 DOI:10.1007/s40820-024-01510-5

Jianfeng Xi, Yanling Lou, Liucheng Meng, Chao Deng, Youlu Chu, Zhaoyang Xu, Huining Xiao, Weibing Wu

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Abstract

The Janus fabrics designed for personal moisture/thermal regulation have garnered significant attention for their potential to enhance human comfort. However, the development of smart and dynamic fabrics capable of managing personal moisture/thermal comfort in response to changing external environments remains a challenge. Herein, a smart cellulose-based Janus fabric was designed to dynamically manage personal moisture/heat. The cotton fabric was grafted with N-isopropylacrylamide to construct a temperature-stimulated transport channel. Subsequently, hydrophobic ethyl cellulose and hydrophilic cellulose nanofiber were sprayed on the bottom and top sides of the fabric to obtain wettability gradient. The fabric exhibits anti-gravity directional liquid transportation from hydrophobic side to hydrophilic side, and can dynamically and continuously control the transportation time in a wide range of 3–66 s as the temperature increases from 10 to 40 °C. This smart fabric can quickly dissipate heat at high temperatures, while at low temperatures, it can slow down the heat dissipation rate and prevent the human from becoming too cold. In addition, the fabric has UV shielding and photodynamic antibacterial properties through depositing graphitic carbon nitride nanosheets on the hydrophilic side. This smart fabric offers an innovative approach to maximizing personal comfort in environments with significant temperature variations.

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具有可切换液体传输功能的智能纤维素基 Janus 织物，用于个人湿度和热量管理

为个人湿度/热量调节而设计的 Janus 织物因其提高人体舒适度的潜力而备受关注。然而，开发能够根据不断变化的外部环境管理个人湿度/热舒适度的智能动态织物仍然是一项挑战。在此，我们设计了一种基于纤维素的智能 Janus 织物，用于动态调节个人湿度/热度。棉织物通过接枝 N-异丙基丙烯酰胺来构建温度刺激传输通道。随后，在织物的底部和顶部喷涂疏水性乙基纤维素和亲水性纤维素纳米纤维，以获得润湿性梯度。当温度从 10 ℃升高到 40 ℃时，这种织物能在 3-66 秒的大范围内动态、持续地控制液体从疏水性一侧向亲水性一侧的反重力定向输送。这种智能织物在高温下能快速散热，而在低温下则能减缓散热速度，防止人体过冷。此外，通过在亲水面上沉积石墨氮化碳纳米片，这种织物还具有紫外线屏蔽和光动力抗菌特性。这种智能织物提供了一种创新方法，可在温度变化较大的环境中最大限度地提高个人舒适度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.