Temperature-Controlled Transitions Between Glass, Liquid and Gel States in Dense p-NIPA Suspensions
Original entry by Sagar Bhandari, APPHY 225 Fall 2010
Temperature-Controlled Transitions Between Glass, Liquid and Gel States in Dense p-NIPA Suspensions, G. Romeo, A. Fernandez-Nieves, H. M. Wyss, D. Acierno and D.A. Weitz, Advanced Materials
microgels, p-NIPA, glass, liquid, temperature-controlled, transitions
In this paper, the authors demonstrate that concentrated p-NIPA suspensions in a low-temperature glassy state can liquefy and then solidify again as the temperature is raised across the LCST. They use temperature- and pH-responsive particles made of p-NIPA. To measure the LCST of the particles, they perform differential scanning calorimetry (DSC) and find an endothermic peak.