Segmental dynamics of bulk polymers studied by fluorescence correlation spectroscopy

被引：17

作者：

Best, A

Pakula, T

Fytas, G

机构：

[1] Max Planck Inst Polymer Res, D-55021 Mainz, Germany

[2] Univ Crete, FORTH, Iraklion, Greece

[3] Univ Crete, Dept Mat Sci & Technol, Iraklion 71110, Greece

来源：

MACROMOLECULES | 2005年 / 38卷 / 10期

关键词：

D O I：

10.1021/ma047430k

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The segmental dynamics of amorphous bulk polymers was investigated by fluorescence correlation spectroscopy (FCS) at temperatures above the glass transition. The segmental relaxation time was obtained both from dielectric loss measured by dielectric spectroscopy due to the dipole moment of the polymer. It was found that the translation diffusion coefficient of the fluorescent molecular tracer correlated with the segmental relaxation time of the polymer matrix. The assignment of the observed dynamics to the segmental motion associated with the primary α-relaxation opens applications of FCS in polymer physics.

引用

页码：4539 / 4541

页数：3

共 14 条

[1]

Chen SP., 1968, MACROMOLECULES, V1, P270

[2] ANOMALOUS DIFFUSION OF PROBE MOLECULES IN POLYSTYRENE - EVIDENCE FOR SPATIALLY HETEROGENEOUS SEGMENTAL DYNAMICS [J].