Elsevier

Polymer

Volume 37, Issue 15, July 1996, Pages 3227-3231
Polymer

Polymer paper
Isotacticity determination of polypropylene using FT-Raman spectroscopy

https://doi.org/10.1016/0032-3861(96)88466-7Get rights and content

Abstract

We have studied the applicability of Fourier transform (FT)-Raman spectroscopy to the determination of isotacticity in polypropylene. We have compared FT-Raman and Fourier transform infra-red (FTi.r.) spectroscopy as isotacticity determination methods and used 13C nuclear magnetic resonance (n.m.r.) spectroscopy as a reference method. Calibration curves relating Raman scattering and i.r. absorption ratios to the 13C n.m.r. results are presented. We found that the repeatability for both FT-Raman and FTi.r. measurements is comparable to that of 13C n.m.r. analysis and that there is a good correlation between 13C n.m.r. and FT-Raman/FT-i.r. results. The reliabilities of the three methods are statistically evaluated and compared.

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