Abstract
Vibrational spectroscopy had been for a long time believed to be sensitive to only the local structure of polymers. But this technique has been found to be powerful in the study of higher-order structure of polymers. Concrete examples were presented in this review, including the morphology-dependent infrared spectra of polyoxymethylene and their application to the study of crystallization process, the intimate relationship between stress-induced Raman spectral change and stress distribution in bulk polyoxymethylene samples and poly-p-phenylene benzobisoxazole fibers, and the chain folding mode in crystalline lamellae of polyethylene.
