Polymer Physics (lecture on time-temperature superposition)

Time-temperature superposition (TTS) principle, arising from the essence of the strong temperature dependence of polymer melts, is described in a heuristic way, as part of the lectures on polymer physics. The lecture did not discuss cases where TTS is not applicable. For example, it can also break during nonlinear rheological responses, briefly mentioned in Lecture 27 in the lecture series of Nonlinear Polymer Rheology:    • Lecture 27   Chapter 17  Additional phenom...