Self-confined polymer dynamics in miscible binary blends
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 61.41.+e - Polymers, elastomers, and plastics 77.22.Gm - Dielectric loss and relaxation
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