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

doi:10.1039/D4SM00304G

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

Lorenzo Bonetti,

*^a Aron Cobianchi,^a Daniele Natali,

^b Stefano Pandini,

^c Massimo Messori,

^d Maurizio Toselli

^b and Giulia Scalet

Author affiliations

* Corresponding authors

^a Department of Civil Engineering and Architecture, University of Pavia, Via Ferrata 3, Pavia 27100, Italy
E-mail: lorenzo.bonetti@unipv.it

^b Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale Risorgimento 4, Bologna 40136, Italy

^c Department of Mechanical and Industrial Engineering, University of Brescia, Via Branze 38, Brescia 25133, Italy

^d Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, Torino 10129, Italy

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.

Article information

https://doi.org/10.1039/D4SM00304G

Article type

Communication

Submitted

11 Mar 2024

Accepted

01 May 2024

First published

02 May 2024

This article is Open Access

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Soft Matter, 2024,20, 4544-4547

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

L. Bonetti, A. Cobianchi, D. Natali, S. Pandini, M. Messori, M. Toselli and G. Scalet, Soft Matter, 2024, 20, 4544 DOI: 10.1039/D4SM00304G

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Soft Matter

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

Abstract

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

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