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4D Fabrication of Two-Way Shape Memory Polymeric Composites by Electrospinning and Melt Electrowriting

Titelangaben

Pasini, Chiara ; Vohr Soreño, Zhander ; Schönfeld, Dennis ; Pretsch, Thorsten ; Constante Ibarra, Gissela Katherine ; Sadilov, Ilia ; Ionov, Leonid:
4D Fabrication of Two-Way Shape Memory Polymeric Composites by Electrospinning and Melt Electrowriting.
In: Macromolecular Rapid Communications. Bd. 45 (2024) Heft 11 . - 2400010.
ISSN 1521-3927
DOI: https://doi.org/10.1002/marc.202400010

Volltext

Link zum Volltext (externe URL): Volltext

Angaben zu Projekten

Projektfinanzierung: Deutsche Forschungsgemeinschaft
IO 68/10-1 IO 68/11-1 IO 68/16-1
Europan Regional Development Fund: project 85007031
Fraunhofer Exccellence Cluster "Programmable Materials": grants numer PSP elements 40-04068-2500-00007 and 40-03420-2500-00003

Abstract

This work presents a new method for 4D fabrication of two-way shape memory materials that are capable of reversible shapeshifting right after manufacturing, upon application of proper heating and cooling cycles. The innovative solution here presented consists in the combination of highly stretched electrospun shape memory polymer (SMP) nanofibers with a melt electrowritten elastomer. More specifically, the stretched nanofibers are made of a biocompatible thermoplastic polyurethane (TPU) with crystallizable soft segments, undergoing melt-induced contraction and crystallization-induced elongation upon heating and cooling, respectively. Reversible actuation during crystallization becomes possible due to the elastic recovery of the elastomer component, obtained by melt electrowriting of a commercial TPU filament. Thanks to the design freedom offered by additive manufacturing, the elastomer structure has also the role of guiding the shape transformation. Electrospinning and melt electrowriting process parameters are setup so to obtain smart 4D objects capable of two-way shape memory effect (SME), and the possibility of reversible and repeatable actuation is demonstrated. The two components are then combined in different proportions with the aim of tailoring the two-way SME, taking into account the effect of design parameters such as the SMP content, the elastomer pattern, and the composite thickness.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Nein
Keywords: shape morphing; reversible shape memory effect; polyester urethane; electrospinning; melt electrowriting
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften > Professur Biofabrikation > Professur Biofabrikation - Univ.-Prof. Dr. Leonid Ionov
Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Professur Biofabrikation
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
500 Naturwissenschaften und Mathematik > 540 Chemie
600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 05 Okt 2024 21:00
Letzte Änderung: 07 Okt 2024 09:42
URI: https://eref.uni-bayreuth.de/id/eprint/90571