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Melt Electrowriting of Thermoplastic Elastomers

Title data

Hochleitner, Gernot ; Fürsattel, Eva ; Giesa, Reiner ; Groll, Jürgen ; Schmidt, Hans-Werner ; Dalton, Paul D.:
Melt Electrowriting of Thermoplastic Elastomers.
In: Macromolecular Rapid Communications. Vol. 39 (2018) Issue 10 . - Art.Nr. 1800055.
ISSN 1521-3927
DOI: https://doi.org/10.1002/marc.201800055

Project information

Project financing: Bayerisches Staatsministerium für Wissenschaft, Forschung und Kunst
Deutsche Forschungsgemeinschaft

Abstract in another language

Abstract Melt electrowriting (MEW), an additive manufacturing process, is established using polycaprolactone as the benchmark material. In this study, a thermoplastic elastomer, namely, poly(urea-siloxane), is synthesized and characterized to identify how different classes of polymers are compatible with MEW. This polyaddition polymer has reversible hydrogen bonding from the melt upon heating/cooling and highly resolved structures are achieved by MEW. The influence of applied voltage, temperature, and feeding pressure on printing outcomes behavior is optimized. Balancing these parameters, highly uniform and smooth-surfaced fibers with diameters ranging from 10 to 20 µm result. The quality of the 3D MEW scaffolds is excellent, with very accurate fiber stacking capacity—up to 50 layers with minimal defects and good fiber fusion between the layers. There is also minimal fiber sagging between the crossover points, which is a characteristic of thicker MEW scaffolds previously reported with other polymers. In summary, poly(urea-siloxane) demonstrates outstanding compatibility with the MEW process and represents a class of polymer—thermoplastic elastomers—that are, until now, untested with this approach.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: 3D printing; electrowriting; melt electrospinning writing; melt processing; poly(urea-siloxane)
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry I
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry I > Chair Macromolecular Chemistry I - Univ.-Prof. Dr. Hans-Werner Schmidt
Research Institutions
Research Institutions > Affiliated Institutes
Research Institutions > Affiliated Institutes > Bavarian Polymer Institute (BPI)
Research Institutions > Collaborative Research Centers, Research Unit > SFB/Transregio 225 Biofabrication
Graduate Schools
Graduate Schools > Elite Network Bavaria
Graduate Schools > Elite Network Bavaria > Macromolecular Science
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 24 Oct 2018 11:56
Last Modified: 29 Oct 2018 10:18
URI: https://eref.uni-bayreuth.de/id/eprint/46136