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Optimized Photoinitiator for Fast Two‐Photon Absorption Polymerization of Polyester‐Macromers for Tissue Engineering
Author(s) -
Poocza Leander,
Gottschaldt Michael,
Markweg Eric,
Hauptmann Nicole,
Hildebrand Gerhard,
Pretzel David,
Hartlieb Matthias,
Reichardt Christian,
Kübel Joachim,
Schubert Ulrich S.,
Mollenhauer Olaf,
Dietzek Benjamin,
Liefeith Klaus
Publication year - 2017
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201600686
Subject(s) - photoinitiator , materials science , polymerization , cyclopentanone , absorption (acoustics) , polymer chemistry , polyester , solubility , chemical engineering , photochemistry , polymer , composite material , organic chemistry , chemistry , monomer , catalysis , engineering
The efficiency of two‐photon polymerization (TPP) techniques depends on the photoinitiator (PI) systems. Objective of this study was to enhance the performance of a cyclopentanone‐based PI by introducing polar side chains in order to increase the solubility of the PI in the investigated macromonomers urethanedimethacrylate (UDMA) and lactide‐caprolactone‐methacrylate (LCM). The conditions for TPP were investigated in writing power/speed arrays. To confirm the high reactivity of the new PI a maximum speed experiment at a concentration of 2% was performed and a TPP structure in the dimensions of several centimeters could be written, which to our knowledge has not yet been reported elsewhere.