4 papers
The Interplay Between Liquid-Liquid Phase Equilibria, Sequence, and Tg in Copolymers
Makayla R. Branham-Ferrari, David S. Simmons
Copolymerization is commonly employed to tune polymers' glass formation and improve properties such as ion conductivity and adhesion. Classically, mixing rules such as the Fox equa…
Depth-dependent interplay of dynamical heterogeneity and chain dynamics at the surface of glass-forming polymers
Bao T. Ma, David S. Simmons
Polymer thin films exhibit pronounced interfacial mobility gradients that modify chain relaxation, yet how these gradients govern chain-scale dynamics across depth remains incomple…
Quantitatively Connecting Experimental Time-Temperature-Superposition-Breakdown of Polymers near the Glass Transition to Dynamic Heterogeneity via the Heterogeneous Rouse Model
Peijing Yue, David S. Simmons
Polymers near the glass transition temperature Tg often exhibit a breakdown of time-temperature-superposition (TTS), with chain relaxation times and viscosity exhibiting a weaker t…
Mixed equilibrium/nonequilibrium effects govern surface mobility in polymer glasses
Jianquan Xu, Asieh Ghanekarade, Li Li +6
The temperature at which supercooled liquids turn into solid-like glasses () can change at the free surface, affecting the properties of nanostructured glasses and their appli…