Study of the physical structure of PVC by infrared techniques: A short review

Abstract

Infrared spectroscopy is an important analytical technique for investigating polymeric materials. The physical properties of poly(vinyl chloride) (PVC) depend on its chemical and physical structure. Fourier transform infrared spectroscopy (FTIR) and other infrared techniques are commonly used for studying crystallinity, configurational and conformational changes, and chain orientation in plasticized and non‐plasticized PVC. The C‐Cl stretching region is particularly sensitive to the macromolecular structure and important changes may be detected depending on fundamental parameters.

Effect of crystallinity on PVC physical properties

“…A variety of techniques and instrumental methods has been used to determine the presence of crystallites in PVC. Among the techniques mentioned in the literature are: infrared dichroism, Raman spectroscopy, differential scanning calorimetry, b hfringence, X-ray diffraction, sonic modulus, polarized fluorescence spectroscopy, broad line nuclear resonance, and solvent sorption (9,10). Of these, the most commonly used techniques are infrared analysis and X-ray dif€raction.…”