Use of band-fitted Raman spectra for the physical characterization of polymers and measurement of the oriented amorphous phase

Fran Adar; Herman D. Noether

doi:10.1117/12.59295

14 May 1992 Use of band-fitted Raman spectra for the physical characterization of polymers and measurement of the oriented amorphous phase

Fran Adar, Herman D. Noether

Author Affiliations +

Proceedings Volume 1636, Applied Spectroscopy in Materials Science II; (1992) https://doi.org/10.1117/12.59295
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

Polarized Raman spectra of spin-oriented and drawn fibers of high-tenacity polyethylene and polyethylene terephthalate have been measured in order to correlate bulk properties with microscopic structural order. Band-fitting is pivotal to separating components of closely spaced lines. In the case of polyethylene terephthalate, glycol bands just below ^~1100 cm-i correlate in intensity with orientation as derived front optical birefringence. Separate bands can be correlated with the trans crystalline and trans amorphous phases. Polarized spectra of a fiber of polyethylene with high orientation and crystallinity can be used as a basis with which to compare partially crystalline materials. Since the amorphous phase of oriented partially crystalline polymers determines the practical strength of these fibers, the Raman data that provides information otherwise unobtainable can be useful in their characterization.

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Fran Adar and Herman D. Noether "Use of band-fitted Raman spectra for the physical characterization of polymers and measurement of the oriented amorphous phase", Proc. SPIE 1636, Applied Spectroscopy in Materials Science II, (14 May 1992); https://doi.org/10.1117/12.59295

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