Bo. Budevska et al., STEP-SCAN FOURIER-TRANSFORM INFRARED STUDY ON THE EFFECT OF DYNAMIC STRAIN ON ISOTACTIC POLYPROPYLENE, Applied spectroscopy, 47(11), 1993, pp. 1843-1851
Dynamic rheo-optical spectra of two isotactic polypropylene samples of
different states of order were measured by step-scan FT-IR spectromet
ry. Experimental details and data collection considerations are discus
sed. The features in the dynamic spectra are found to be due to small
wave-number shifts and absorption changes. The dynamic rheo-optical sp
ectra depend strongly on the pretreatment of the samples, as well as o
n the polarization state of the infrared radiation used for analysis.