Self-confined polymer dynamics in miscible binary blends
Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018 San Sebastián, Spain
2 Departamento de Física de Materiales (UPV/EHU) y Unidad de Física de Materiales Centro Mixto (CSIC-UPV/EHU), Facultad de Química, Apartado 1072, 20080 San Sebastián, Spain
Published online: 5 November 2003
The segmental dynamics of PVME within the single-phase state of poly(styrene)/poly(vinyl methyl ether) blends (PS/PVME) was examined by dielectric spectroscopy. A particular attention has been given to the high PS concentration regime. In this latter, rather localized, weakly cooperative motions of the PVME segments are detected at low temperatures, in addition of the secondary relaxation processes. This feature is attributed to confinement effects induced by the PS chains on the PVME.
PACS: codes. – 83.80.Tc - Polymer blends / codes. – 61.41.+e - Polymers, elastomers, and plastics / codes. – 77.22.Gm - Dielectric loss and relaxation
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003