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arXiv · 2501.04546

Solvent-triggered shape change in gradient-based 4D printed bilayers: case study on semi-crystalline polymer networks

Lorenzo Bonetti·Aron Cobianchi·Daniele Natali·Stefano Pandini·Massimo Messori·Maurizio Toselli·Giulia Scalet
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Abstract

We propose an approach to 4D print solvent-triggered, gradient-based bilayers made of semi-crystalline crosslinked polymer networks. Out-of-plane bending is obtained after immersion in the solvent, exploiting the different swelling degrees of the layers resulting from crosslinking gradients. Lastly, a beam model of the shape transformation is applied and experimentally validated.

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Lorenzo Bonetti, Aron Cobianchi, Daniele Natali, Stefano Pandini, Massimo Messori, Maurizio Toselli, Giulia Scalet. 2025-01-08. Solvent-triggered shape change in gradient-based 4D printed bilayers: case study on semi-crystalline polymer networks. https://doi.org/10.1039/d4sm00304g

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