Study of miscibility of poly (ε-caprolactone)-poly (vinyl chloride) blends, by FT-i.r. spectrophotometry

This paper studies miscibility of blends of polymers using the FT-i.r. spectroscopy technique. Blends of poly(epsilon -caprolactone) and poly(vinyl chloride) were previously characterised through techniques of spectral substraction plus observation of the spectra attained at various temperatures. A different experimental method has been used which consist of comparing the spectra of blends of different proportions in solid state with theoretical spectra simulated from the component polymers.