Conformational studies of poly(ethylene oxide) in crystalline, molten, and solution phase

C. Branca, S. Magazù, G. Maidsano, F. Migliardo, P. Migliardo, G. Romeo, B. Vértessy

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Raman scattering measurements were performed on Poly(Ethylcnc Oxide) both in the crystalline and molten phases and in aqueous solution. The spectral features of the molten state are shown to be largely different from those of the solid phase. Such a difference indicates of a loss of order and an evolution towards a far more disordered conformation. This indication is supported by the analysis of the D-LAM (acronym for Disordered Longitudinal Acoustic Mode) band for the polymeric aqueous solutions. What emerges is that, by increasing the water content, the center frequency of this mode increases (over 10 cm-1) and shifts towards values corresponding to the crystal ones. In order to investigate the role played by the interactive OH end groups, the CH3 terminated species corresponding to the same degree of polymerization, are therewith examined.

Original languageEnglish
Pages (from-to)17-23
Number of pages7
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume372
Publication statusPublished - 2001

Fingerprint

ethylene oxide
Polyethylene oxides
Molten materials
Crystalline materials
aqueous solutions
abbreviations
Oxides
Water content
moisture content
Conformations
solid phases
Raman scattering
indication
polymerization
Polymerization
Raman spectra
Crystals
oxides
acoustics
shift

Keywords

  • D-LAM
  • Polymers
  • Raman scattering

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Conformational studies of poly(ethylene oxide) in crystalline, molten, and solution phase. / Branca, C.; Magazù, S.; Maidsano, G.; Migliardo, F.; Migliardo, P.; Romeo, G.; Vértessy, B.

In: Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, Vol. 372, 2001, p. 17-23.

Research output: Contribution to journalArticle

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AU - Romeo, G.

AU - Vértessy, B.

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