Scalable super hygroscopic polymer films for sustainable moisture harvesting in arid environments
Walker (United States) · The University of Texas at Austin
Abstract
Abstract Extracting ubiquitous atmospheric water is a sustainable strategy to enable decentralized access to safely managed water but remains challenging due to its limited daily water output at low relative humidity (≤30% RH). Here, we report super hygroscopic polymer films (SHPFs) composed of renewable biomasses and hygroscopic salt, exhibiting high water uptake of 0.64–0.96 g g −1 at 15–30% RH. Konjac glucomannan facilitates the highly porous structures with enlarged air-polymer interfaces for active moisture capture and water vapor transport. Thermoresponsive hydroxypropyl cellulose enables phase transition at a low temperature to assist the release of collected water via hydrophobic interactions. With…
Citation impact
- FWCI
- 11.94
- Percentile
- 100%
- References
- 42
Authors
6- YGYouhong GuoCorresponding
Walker (United States), The University of Texas at Austin
- WGWeixin Guan
Walker (United States), The University of Texas at Austin
- CLChuxin Lei
Walker (United States), The University of Texas at Austin
- HLHengyi Lu
Walker (United States), The University of Texas at Austin
- WSWen Shi
Walker (United States), The University of Texas at Austin
Topics & keywords
- Moisture
- Materials science
- Water vapor
- Chemical engineering
- Polymer
- Relative humidity
- Desorption
- Sorption