Reversibly Thermosecreting Organogels with Switchable Lubrication and Anti‐Icing Performance

Autor:	Mingjie Liu, Ruochen Fang, Zhandong Gu, Lei Jiang, Yunfei Ru
Rok vydání:	2020
Předmět:	Aqueous solution Materials science Polymer network 010405 organic chemistry Fluid bearing General Chemistry Adhesion General Medicine 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences Chemical engineering Upper critical solution temperature Self-healing hydrogels Lubrication Icing
Zdroj:	Angewandte Chemie. 132:11974-11978
ISSN:	1521-3757 0044-8249
DOI:	10.1002/ange.202004122
Popis:	Synthetic gels with switchable interfacial properties have great potential in smart devices and controllable transport. Herein, we design an organogel by incorporating a binary liquid mixture with an upper critical solution temperature (UCST) into a polymer network, resulting in reversible modulation of lubrication and adhesion properties. As the temperature changes, the lubricating mechanism changes reversibly from boundary lubrication to hydrodynamic lubrication due to phase separation within the binary solution permeating the gel (friction coefficient 0.4-0.03). Droplets appear on the gel surface at low temperature and disappear with temperature higher than the critical phase separation temperature (Tps ) of the organogel. The organogel possesses a relatively low ice adhesive strength (less than 1 kPa). This material has potential applications in anti-icing and smart devices, and we believe that this design strategy can be expanded to other systems such as aqueous solutions and hydrogels.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8889530b060cbe35f782ccf98ba07bb3 https://doi.org/10.1002/ange.202004122 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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