Molecular control over vitrimer-like mechanics – tuneable dynamic motifs based on the Hammett equation in polyimine materials

Chemistry is cool. WHo would have thought that changing a side group on a polymeric component can change the rheology of the whole network by adjusting the exchange rate kinetics? Sybren K. Schoustra, Joshua A. Dijksman, Han Zuilhof, Maarten M. J. Smulders — Chemical Science 12, 293–302 (2021) 10.1039/d0sc05458e

Rotational diffusion and rotational correlations in frictional amorphous disk packings under shear

Rotational dynamics of individual particles in sheared granular materials is surprisingly “thermal” and indicative of mesoscopic mechanisms that underpin concepts such as shear jamming. Here we reanalyzed existing data set with the help of a very multidisciplinary team. Dong Wang, Nima Nejadsadeghi, Yan Li, Shashi Shekhar, Anil Misra, Joshua A. Dijksman — Soft Matter (2021)Continue reading “Rotational diffusion and rotational correlations in frictional amorphous disk packings under shear”