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Hydrophilic (AB)n Segmented Copolymers for Melt Extrusion-Based Additive Manufacturing

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00005285
URN to cite this document: urn:nbn:de:bvb:703-epub-5285-9

Title data

Mechau, Jannik ; Frank, Andreas ; Bakirci, Ezgi ; Gumbel, Simon ; Jungst, Tomasz ; Giesa, Reiner ; Groll, Jürgen ; Dalton, Paul D. ; Schmidt, Hans-Werner:
Hydrophilic (AB)n Segmented Copolymers for Melt Extrusion-Based Additive Manufacturing.
In: Macromolecular Chemistry and Physics. Vol. 222 (2021) Issue 1 . - No. 2000265. - 10 S.
ISSN 1521-3935
DOI der Verlagsversion: https://doi.org/10.1002/macp.202000265

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Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract

Abstract Several manufacturing technologies beneficially involve processing from the melt, including extrusion-based printing, electrospinning, and electrohydrodynamic jetting. In this study, (AB)n segmented copolymers are tailored for melt-processing to form physically crosslinked hydrogels after swelling. The copolymers are composed of hydrophilic poly(ethylene glycol)-based segments and hydrophobic bisurea segments, which form physical crosslinks via hydrogen bonds. The degree of polymerization was adjusted to match the melt viscosity to the different melt-processing techniques. Using extrusion-based printing, a width of approximately 260 µm is printed into 3D constructs, with excellent interlayer bonding at fiber junctions, due to hydrogen bonding between the layers. For melt electrospinning, much thinner fibers in the range of about 1–15 µm are obtained and produced in a typical nonwoven morphology. With melt electrowriting, fibers are deposited in a controlled way to well-defined 3D constructs. In this case, multiple fiber layers fuse together enabling constructs with line width in the range of 70 to 160 µm. If exposed to water the printed constructs swell and form physically crosslinked hydrogels that slowly disintegrate, which is a feature for soluble inks within biofabrication strategies. In this context, cytotoxicity tests confirm the viability of cells and thus demonstrating biocompatibility of this class of copolymers demonstrated.

Further data

Item Type: Article in a journal
Keywords: 3D printing; (AB)n segmented copolymers; Biocompatibility; Melt electrowriting
DDC Subjects: 500 Science
500 Science > 540 Chemistry
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
Profile Fields
Profile Fields > Advanced Fields
Profile Fields > Advanced Fields > Polymer and Colloid Science
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions
Research Institutions > Affiliated Institutes
Research Institutions > Affiliated Institutes > Bavarian Polymer Institute (BPI)
Research Institutions > Collaborative Research Centers, Research Unit
Research Institutions > Collaborative Research Centers, Research Unit > SFB/Transregio 225 Von den Grundlagen der Biofabrikation zu funktionalen Gewebemodellen
Graduate Schools
Graduate Schools > Elite Network Bavaria
Graduate Schools > Elite Network Bavaria > Macromolecular Science
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-5285-9
Date Deposited: 16 Feb 2021 07:51
Last Modified: 16 Feb 2021 07:52
URI: https://epub.uni-bayreuth.de/id/eprint/5285

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