Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy p. 1353 - 1366 (1991)
Update date:2022-08-17
Topics:
Ellis, G.
Lorente, J.
Marco, C.
Gomez, M. A.
Fatou, J. G.
Hendra, P. J.
The Fourier transform infrared and Raman spectra of the semi-flexible main-chain thermotropic liquid crystal polyester, poly(heptamethylene terephthaloyl-bis-4-oxybenzoate) are presented, and tentative band assignments given.The polymer is investigated as a function of its thermal history, and Fourier transform Raman spectra are recorded with temperature using a high-temperature cell.The results are discussed along with calorimetric and X-ray scattering data.Spectral evidence is presented which is related to both the sample crystallinity, and the crystal-to-liquid crystal phase transition.
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