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Titel
Rapid formation of regulated methacrylate networks yielding tough materials for lithography-based 3D printing / Christian Gorsche, Konstanze Seidler, Patrick Knaack, Peter Dorfinger, Thomas Koch, Jürgen Stampfl, Norbert Moszner and Robert Liska
VerfasserGorsche, Christian ; Seidler, Konstanze ; Knaack, Patrick ; Dorfinger, Peter ; Koch, Thomas ; Stampfl, Jürgen In der Gemeinsamen Normdatei der DNB nachschlagen ; Moszner, Norbert ; Liska, Robert In der Gemeinsamen Normdatei der DNB nachschlagen
Erschienen in
Polymer Chemistry, 2016,
Erschienen2016
Ausgabe
Published version
Umfang1 Online-Ressource (6 Seiten) : Diagramme
SpracheEnglisch
DokumenttypAufsatz in einer Zeitschrift
Projekt-/ReportnummerP27059
ISSN1759-9962
URNurn:nbn:at:at-ubtuw:3-2571 Persistent Identifier (URN)
DOI10.1039/C5PY02009C 
Zugriffsbeschränkung
 Das Werk ist frei verfügbar
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Rapid formation of regulated methacrylate networks yielding tough materials for lithography-based 3D printing [1.28 mb]
Supplementary information [1.29 mb]
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Zusammenfassung (Englisch)

Multifunctional methacrylates are highly reactive monomers for radical photopolymerization, but yield brittle materials due to their inhomogeneous and highly crosslinked network architecture. Addition fragmentation chain transfer (AFCT) reagents serve as additives for the regulation of radical network formation and pave the way to photopolymer networks with high toughness. However, AFCT reagents (e.g. -allyl sulfones) tend to have a negative influence on the reaction speed which limits them for lithography-based 3D fabrication. Vinyl sulfone esters are described as a new class of AFCT reagents for methacrylate-based photopolymerization without the drawback of retardation but good regulation of network architecture. The resulting materials show high network homogeneity, low shrinkage stress, and a significant increase in C[double bond, length as m-dash]C double bond conversion and toughness. This promises great potential for vinyl sulfone esters as AFCT reagents in photopolymer applications. First 3D parts have been successfully fabricated via digital light processing.

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