Neutron Scattering and Dielectric Study on the Structural and Dynamical Peculiar Properties of Poly(vinyl chloride)
- Unidad de Fisica de Materiales CSIC-UPV/EHU Apartado 1072, 20080 San Sebastian (Spain)
- Departamento de Fisica de Materiales UPV/EHU, Apartado 1072, 20080 San Sebastian (Spain)
- Institut fuer Festkoerperforschung, Forschungszentrum Juelich GmbH, D-52425 Juelich (Germany)
- Institut Laue-Langevin, BP 156, 38042 Grenoble Cedex 9 (France)
In this work we have studied the anomalous dynamical behavior of poly(vinyl chloride) (PVC) searching its origin in the dynamical heterogeneities arising from the structural peculiarities of this polymer. For this purpose we have combined dielectric spectroscopy, coherent and incoherent neutron scattering for the dynamics investigation, and SANS for resolving the heterogeneous structure of PVC. The SANS experiments indicate the existence of structural modulations that persist in the temperature range T < 430 K. We show that a distribution of glass transition temperatures due to these density modulations causes the broadening of the response from the structural relaxation and the anomalous momentum transfer dependence of the incoherent scattering function.
- OSTI ID:
- 20652776
- Journal Information:
- AIP Conference Proceedings, Vol. 708, Issue 1; Conference: 3. international symposium on slow dynamics in complex systems, Sendai (Japan), 3-8 Nov 2003; Other Information: DOI: 10.1063/1.1764231; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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