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Thermoresponsive Smart Gating Wood Membranes.

Authors :
Ding Y
Panzarasa G
Stucki S
Burgert I
Keplinger T
Source :
ACS sustainable chemistry & engineering [ACS Sustain Chem Eng] 2022 May 02; Vol. 10 (17), pp. 5517-5525. Date of Electronic Publication: 2022 Apr 20.
Publication Year :
2022

Abstract

Smart membranes that can open and/or close their pores in a controlled manner by external stimuli possess potential in various applications, such as water flow manipulation, indoor climate regulation, and sensing. The design of smart gating membranes with high flux, immediate response, and mechanical robustness is still an open challenge, limiting their versatility and practical applicability. Inspired by the controlled opening and closure of plant stomata, we have developed a smart gating wood membrane, taking advantage of the unique wood scaffold with its hierarchical porous structure to carry thermoresponsive hydrogel gates. Laser drilling was applied to cut channels in the wood scaffold with well-aligned pores to incorporate the smart gating membranes. In situ polymerization of poly(N-isopropylacrylamide) above its lower critical solution temperature inside the channels resulted in a hydrogel with a heterogeneous microstructure acting as a thermoresponsive gate. The wood-based smart gating membranes exhibited reversible and stable pore opening/closing under heating/cooling stimuli. The achieved rapid response and feasibility of scale-up open the venue for various practical applications. In this work, we demonstrated their potential for indoor light regulation and as a water flow manipulator.<br />Competing Interests: The authors declare no competing financial interest.<br /> (© 2022 The Authors. Published by American Chemical Society.)

Details

Language :
English
ISSN :
2168-0485
Volume :
10
Issue :
17
Database :
MEDLINE
Journal :
ACS sustainable chemistry & engineering
Publication Type :
Academic Journal
Accession number :
35528199
Full Text :
https://doi.org/10.1021/acssuschemeng.2c00111