Title

In Situ Fourier Transform Infrared Spectroscopic Study of the Thermal Degradation of Isotactic Poly(propylene)

Document Type

Article

Publication Date

1-1-2005

Department

Polymers and High Performance Materials

Abstract

The conformational change of isotactic poly(propylene) (iPP) during the thermal degradation process has been carefully studied by in situ Fourier transform infrared (FT-IR) spectroscopy. This new method of studying thermal degradation of iPP not only shows the conventional kinetic parameter information of thermal degradation such as the degradation activation energy DeltaE and the degradation factor it, which are in accord with the results of traditional thermogravimetry experiments, but also indicates that many significant molecular structure changes occur during the thermal degradation process that come from some characteristic absorption band changes of in situ FT-IR. A multivariate approach, principal components analysis (PCA), is applied to the analysis of infrared (IR) data, and the results further confirm the niulti-step processes of the thermal degradation of W. Above all, this is a new application to polymer thermal degradation by in situ FT-IR that connects the intermediate conformational change with final results during thermal degradation.

Publication Title

Applied Spectroscopy

Volume

59

Issue

1

First Page

33

Last Page

38

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