期刊
ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 43, 页码 51708-51717出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c14724
关键词
all-hydrophobic fabric; bilayered structure; fluid diode; trace liquid wastage; continuous transport
资金
- Natural Science Foundation of Guangdong Province [2021A1515010704, 2020A1515110363]
- Guangdong Science and Technology Major Special Fund [2020-182, 2019-252]
- Key Program of Educational Commission of Guangdong Province [2019KZDXM017]
- Special Funds for the Cultivation of Guangdong College Students' Scientific and Technological Innovation [Climbing Program Special Funds] [pdjh2020b0607, pdjh2021b0513]
- Scientific Research Startup Funds for High-Level Talents of Wuyi University [2020AL017]
- Wuyi University of Innovation and Entrepreneurship Project for Students [2019CX08]
Directional water transport fabric (DWTF) was successfully fabricated using entirely hydrophobic materials, exhibiting continuous water motion guidance, reduced liquid wastage, high one-way transport capability, and desirable overall moisture management capability. This smart fluid delivery material has potential applications in various fields such as flexible microfluidics, wound dressing, oil-water separation processes, and engineered desiccant materials.
Directional water transport that occurs in natural insects and plants is important to both organisms and advanced science and technology. Despite the many studies conducted to facilitate directional liquid transport by constructing double-layered hydrophilic/hydrophobic materials, it remains difficult to achieve continuous water transport and reduce liquid wastage due to the hydrophilic regions. Herein, a directional water transport fabric (DWTF) was fabricated using a simple single-side coating method based on entirely hydrophobic materials. With coating thicknesses of 13-29 mu m, the fabric could guide the continuous water motion from the coated to the uncoated side and can be utilized as a liquid diode. In addition, the DWTF exhibited a water wastage reduction during the transport process, benefiting from the intrinsic hydrophobic properties of the material. Moreover, a plausible mechanism of water transport is proposed to explain the water droplet transfer in the bilayered hydrophobic materials. Consequently, the resulting DWTF exhibited an excellent accumulative one-way transport capability (AOTC) of 965.7% and a desirable overall moisture management capability (OMMC) of 0.92. This work provides an avenue for fabricating smart fluid delivery materials to various applications such as flexible microfluidics, wound dressing, oil-water separation processes, and engineered desiccant materials.
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