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Paper Details

PBAT-PLA Blends Buried In Simulated Soil: Characterization by Differential Scanning Calorimetry, Raman Spectroscopy and Wide Angle X-Ray Diffraction

PBAT-PLA Blends Buried In Simulated Soil: Characterization by Differential Scanning Calorimetry, Raman Spectroscopy and Wide Angle X-Ray Diffraction

Journal Title:Journal of Chemical, Biological and physical sciences
Abstract


In this work we have investigated the microscopical changes associated with the partial biodegradation in simulated soil (16 weeks) of poly (butylene adipateco- terephthalate) (PBAT) and poly(lactic acid) (PLA) blends by means of Differential Scanning Calorimetry (DSC), Raman Spectroscopy (FT-Raman) and Wide Angle XRay Diffraction (WAXD). The DSC curves revealed a loss of crystallinity specially in the PLA domains. The FT-Raman spectra showed a relative intensity reduction of the band associated with the carbonyl stretch, due to the hydrolysis of the bond upon ageing. The WAXD curves depicted the peaks associated with the planes of both PBAT and PLA, confirming that there is no significant interaction on the crystallization of these domains in the blend.

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