Congrats to Daniel Lee and Tori Kensy! Their work, in collaboration with Prof. Brian Long and Christopher Maroon (each at UT-Knoxville), was just accepted for publication in Angewandte Chemie. This paper describes the mechanochemical conversion …
Year: 2019
The Intrinsic Mechanochemical Reactivity of Vinyl-Addition Polynorbornene
Herein we report the discovery of the intrinsic mechanochemical reactivity of vinyl-addition polynorbornene (VA-PNB), which has strained bicyclic ring repeat units along the polymer backbone. VA-PNBs with three different side chains were found to undergo ring-opening olefination upon sonication in dilute solutions. The sonicated polymers exhibited spectroscopic signatures consistent with conversion of the bicyclic norbornane repeat units to the ring-open isomer typical of polynorbornene made by ring-opening metathesis polymerization (ROMP-PNB). Thermal analysis and evaluation of chain scission kinetics suggest that sonication of VA-PNB results in chain segments containing a statistical mixture of vinyl-added and ROMP-type repeat units.
Congratulations on Johanna Schwartz’s First Prize Poster!
Congratulations to Johanna Schwartz who won first prize for her poster, titled “Multimaterial Actinic Spatial Control (MASC) Digital Light Processing Additive Manufacturing” at the University of Wisconsin Workshop on Additive Manufacturing. The workshop featured talks …