Spiropyran molecular switches, in conjunction with transition metal ions, are shown to operate as reversible polymer cross-linkers. Solutions containing a spiropyran …
A new mathematical representation for nonlinear viscoelasticity is presented based on the application of the Volterra series expansion to the general nonlinear relationship between …
S Sen, RH Ewoldt - Journal of Rheology, 2022 - pubs.aip.org
There is no universal model for thixotropy, and comparing thixotropic effects between different fluids is a subtle yet challenging problem. We introduce a generalized (model …
We derive and study equations for the weakly nonlinear medium-amplitude oscillatory shear (MAOS) response of materials exhibiting time-strain separability. Results apply to …
We consider the corotational Maxwell model which is perhaps the simplest constitutive model with a nontrivial oscillatory shear response that can be solved analytically. The exact …
Imparting multiple, distinct dynamic processes at precise time scales in polymers is a grand challenge in soft materials design with implications for applications including electrolytes …
F Zhang, L Wang, C Li, Y Xing - Materials, 2020 - mdpi.com
To study the linear viscoelastic (LVE) of crumb rubber-modified asphalt mixtures before and after the warm mix additive was added methods of obtaining the discrete and continuous …
SR Kedari, G Atluri, K Vemaganti - Journal of Rheology, 2022 - pubs.aip.org
The inference of the spectral function representing the relaxation process of a material is an ill-posed problem and regularization is key to solving such problems. Significant information …
Uncertainty propagates through calculations, down to molecular scales to infer microstructural features, and up to macroscopic scales with predictive flow simulations. Here …