Quasielastic Neutron Scattering Study on the Dynamics of Polymer Nanocomposites

Abstract

By using a quasielastic neutron scattering technique (disk-chopper-type spectrometer AMATERAS at J-PARC), we have investigated the microscopic dynamics of polybutadiene (PB) in which silica particles were embedded. The experimental results gave us both a damped vibration mode of PB and jumped diffusion motion of the segments. It was found that fast dynamics of damped vibration mode of PB remain unaffected by the presence of the silica particles, while the residence time of the jumped diffusion motion becomes longer at the high filler loading.