Journal
LANGMUIR
Volume 29, Issue 33, Pages 10498-10504Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la401621j
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A shape memory polymer, Nafion, has its shape memory simultaneously programmed and patterned with microand nanometer-scale surface textures using a nanoimprint process. Highly ordered and well-defined micro- and nanometer surface textures, for example, high aspect ratio (similar to 5) micropillars, form the permanent shape memory of the Nafion films. When damaged, these permanently shaped micro- and nanostructures possess repair ability through a heat treatment. Reversible recoveries of the damages caused by mechanical and irradiation exposure have been demonstrated. The recovery retains above 90% of the structural fidelity, which is comparable to the shape recovery in bulk film.
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