Published July 1, 2018 | Version v1
Journal article Metadata-only

Study of diffusion in bulk polymer films below glass transition: evidences of dynamical heterogeneities

Creators

  • 1. Institute of Physical Chemistry, Albertstraße 21, Institute of Macromolecular Chemistry, Stefan-Meier-Str. 31, University of Freiburg, Freiburg im Breisgau 79104 (Germany)
  • 2. Department of Photonics and Optical information technologies, ITMO University, Kronverksky pr, 49, Saint-Petersburg 197101 (Russian Federation)

Description

By means of the Forced Rayleigh Scattering (holographic grating relaxation) technique the diffusion of dye molecules in bulk films of polymer below entanglement molecular weight was investigated around the glass transition temperature. In the temperature range [Tg–20К; Tg+ 5К] a splitting of the dye diffusion coefficient into two separate branches was revealed. The phenomenon was found to be similar to that reported for thin polymer films, which may prove the dominating role of dynamic heterogeneities in the investigated temperature region. (paper)

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/1062/1/012020

Additional details

Identifiers

DOI
10.1088/1742-6596/1062/1/012020;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
1062
Journal Issue
1
Journal Page Range
[5 p.]
ISSN
1742-6596

Conference

Title
9. International Conference on Basic Problems of Optics
Acronym
BPO'2016
Dates
17-21 Oct 2016
Place
Saint-Petersburg (Russian Federation)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
53013649
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
DIFFUSION; DYES; GLASS; GRATINGS; HOLOGRAPHY; MOLECULAR WEIGHT; MOLECULES; POLYMERS; QUANTUM ENTANGLEMENT; RAYLEIGH SCATTERING; THIN FILMS; TRANSITION TEMPERATURE
Descriptors DEC
COHERENT SCATTERING; FILMS; PHYSICAL PROPERTIES; SCATTERING; THERMODYNAMIC PROPERTIES