Observation of Longitudinal Acoustic Mode in Poly(β-hydroxybutyrate)

Observation of Longitudinal Acoustic Mode in Poly(β-hydroxybutyrate)

A Raman active longitudinal acoustic mode (LAM) in the 15 cm-1 region has been observed in a biodegradable thermoplastic, poly(β-hydroxybutyrate) (PHB). The inverse relationship between the long period measured by small-angle X-ray scattering and the band frequency was observed. In addition, the int...

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Veröffentlicht in:Macromolecules 1996-06, Vol.29 (12), p.4247-4250
Hauptverfasser: Chien, Bert Tze-Wha, Hsu, Shaw Ling, Stidham, Howard D
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Structure, morphology and analysis
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Zusammenfassung:A Raman active longitudinal acoustic mode (LAM) in the 15 cm-1 region has been observed in a biodegradable thermoplastic, poly(β-hydroxybutyrate) (PHB). The inverse relationship between the long period measured by small-angle X-ray scattering and the band frequency was observed. In addition, the intensity of this vibration was found to be extremely intense as is characteristic of longitudinal acoustic modes. This observation is especially intriguing since the chemical structure of PHB is significantly different from those of all known polymers exhibiting LAM bands.
ISSN:0024-9297
1520-5835
DOI:10.1021/ma9518114