期刊
ACS APPLIED MATERIALS & INTERFACES
卷 14, 期 1, 页码 1983-1993出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c20193
关键词
indoor humidification; aligned fibrous structure; surface wettability; superhydrophilicity; electrospinning; ultrafast water transport and evaporation
资金
- National Natural Science Foundation of China [52073052, 51925302]
- Program of Shanghai Academic/Technology Research Leader [21XD1420100]
- Natural Science Foundation of Shanghai [20ZR1470800]
- Program for Professor of Special Appointment at Shanghai Institutions of Higher Learning [TP2016019]
- Program of Guangdong Midea Refrigeration Equipment Co., Ltd. [JYKT01152019080002]
A biomimetic micro-/nanofibrous composite membrane with highly aligned fibrous structure and tailored surface wettability was developed for high-efficiency indoor humidification, demonstrating outstanding wicking height, water absorption, evaporation rate, and humidification capacity, surpassing commercial nonwoven membranes by 57%. This innovative membrane design provides new insights into the development of micro-/nanofibrous humidifying membranes for personal comfort and industrial productivity.
Humidifying membranes with ultrafast water transport and evaporation play a vital role in indoor humidification that improves personal comfort and industrial productivity in daily life. However, commercial nonwoven (NW) humidifying membranes show mediocre humidification capability owing to limited wicking capacity, low water absorption, and relatively less water evaporation. Herein, we report a biomimetic micro-/nanolibrous composite membrane with a highly aligned fibrous structure using a humidity-induced electrospinning technique for high-efficiency indoor humidification. Surface wettability and roughness are also tailored to achieve a high degree of superhydrophilicity by embedding hydrophilic silicon dioxide nanoparticles (SiO, NPs) into the fiber matrix. The synergistic effect of the highly aligned fibrous structure and surface wettability endows composite membranes with ultrafast water transport and evaporation. Strikingly, the composite membrane exhibits an outstanding wicking height of 19.5 cm, a superior water absorption of 497.7%, a fast evaporation rate of 0.34 mL h(-1), and a relatively low air pressure drop of 14.4 Pa, thereby achieving a remarkable humidification capacity of 514 mL h(-1) ( 57% higher than the commercial NW humidifying membrane). The successful synthesis of this biomimetic micro-/nanolibrous composite membrane provides new insights into the development of micro-/nanofibrous humidifying membranes for personal health and comfort as well as industrial production.
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