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Liu, Li ; Ghaemi, Ali ; Gekle, Stephan ; Agarwal, Seema:
One‐Component Dual Actuation : Poly(NIPAM) Can Actuate to Stable 3D Forms with Reversible Size Change.
In: Advanced Materials.
Bd. 28
(2016)
Heft 44
.
- S. 9792-9796.
ISSN 1521-4095
DOI: https://doi.org/10.1002/adma.201603677
Abstract
A rare example of a one‐component dual actuator is provided, which displays irreversible change in shape by rolling on contact with water and reversible size change on changing the temperature. The actuator has a bilayer structure with aligned and randomly oriented fibers of poly(N‐isopropyl acrylamide). A combination of anisotropic E modulus and temperature dependent swelling/shrinkage provides the dual actuation.