title: Highly reactive, liquid diacrylamides via synergistic combination of spatially arranged curing moieties.
abstract: Six polymerizableN,N'-diacylamides containing spatially arrangedN-acryl,N-allyl and/orN-alkyl groups were prepared via two-step syntheses and characterized by1H/13C NMR-spectra, refractive index (RI) and viscosity measurements. Photo DSC measurements on activated samples provided reactivity parameters ∆Hp,Rp,maxandtmax, while FTIR spectra before and after curing elucidated the underlying polymerization mechanism. Mechanical testing of the obtained polymers exhibited gradual differences in network densities, depending on the intramolecular arrangement and number of functional groups. Overall, a general building principle for highly reactive, liquid diacrylamides via synergistic combination of optimally arranged functional groups could be identified. The highest possible level of intramolecular synergism was found for low viscousN,N'-diacryloyl-N,N'-diallyl-1,4-but-2-enediamine.
authors.affiliation: Dentsply Sirona Restorative, De-Trey-Str. 1, 78467 Konstanz, Germany.
authors.forename: Maximilian
authors.initials: M
authors.lastname: Maier
authors.affiliation: MCAT GmbH, Raiffeisenstr. 35, 78166 Donaueschingen, Germany.
authors.forename: Magnus S
authors.initials: MS
authors.lastname: Schmidt
authors.affiliation: MCAT GmbH, Raiffeisenstr. 35, 78166 Donaueschingen, Germany.
authors.forename: Markus
authors.initials: M
authors.lastname: Ringwald
authors.affiliation: Dentsply Sirona Restorative, De-Trey-Str. 1, 78467 Konstanz, Germany.
authors.forename: Christoph P
authors.initials: CP
authors.lastname: Fik
keywords: acrylamide; allyl; cyclopolymerization; photopolymerization; spatial effect