Low Molecular Weight Polyisoprene (PI)/ Silicate Nanocomposites as Studied by Dielectric Relaxation Spectroscopy (DRS) and Dynamic Mechanical Spectroscopy (DMS)

摘要

The polymer used in this research, cis-polyisoprene (PI) is one of the most common polydienes widely used in a synthetic rubber industry and has type-A and type-B dipoles due to the asymmetry in the chemical structure of its repeat unit. Therefore, cis-PI shows a dielectric normal mode relaxation reflecting the fluctuation of the end-to-end vector as well as the segmental α-process which has its origin in the perpendicular component of the dipole moment.