Low-frequency Raman scattering and structure of amorphous polymers: Stretching effect
- 15 August 1991
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 95 (4), 2949-2954
- https://doi.org/10.1063/1.460896
Abstract
Low‐frequency Raman scattering of amorphous polymers [polyethyleneterephthalate (PET) and polymethylmethacrylate] is investigated. The low‐frequency Raman band called ‘‘Boson peak’’ is interpreted in terms of a noncontinuous structure, similar to that of inorganic glasses, i.e., solid amorphous polymers are composed of 50 Å blobs. These are related blobs to transient entanglements in the polymer melt. Modifications induced by stretching are described for a PET film. The nature of the blob structure is discussed.Keywords
This publication has 19 references indexed in Scilit:
- Study of the glass transition of polybutadiene by neutron scatteringPublished by Springer Nature ,2007
- The entanglement concept in polymer rheologyPublished by Springer Nature ,2006
- Vibrational dynamics and the structure of glassesJournal of Physics: Condensed Matter, 1990
- The universality of low frequency Raman scattering from amorphous solidsJournal of Non-Crystalline Solids, 1990
- Universal Form of the Low-Energy (2 to 10 meV) Vibrational Spectrum of GlassesEurophysics Letters, 1990
- Light scattering by fractons in polymersChemical Physics Letters, 1988
- Low-frequency modes in vitreous silicaPhysical Review B, 1986
- Phonon localization in glassesPhysical Review B, 1986
- Low frequency Raman modes in solid amorphous polystyrene and polymethyl methacrylateThe Journal of Chemical Physics, 1977
- Raman-Scattering Selection-Rule Breaking and the Density of States in Amorphous MaterialsPhysical Review Letters, 1970