English Abstract

Lecture Course of Soft Matter Physics for Rubber Engineers
Chapter 2: Viscoelasticity of Liquid State of Polymers

Masao DOI
Beihang University, Beijing, China
Nippon Gomu Kyokaishi,(2020),93(3),95-100 General Review in Japanese

Liquid state of polymers has unique mechanical properties called viscoelasticity: though it is a viscous liquid, it shows rubber-like elasticity for fast flows. Here I will discuss a few basics for the viscoelasticity of polymeric liquids, how to characterize it for small deformation, how to model it for large deformation, and how to understand it from molecular point of view.

Keywords: Linear Viscoelasticity, Constitutive Equation, Oldroyd Model, Entanglement Effect, Reptation Theory