In this work nanocomposite adhesives for flexible packaging obtained using an organically modified montmorillonite (OMM) in a polyurethane matrix were synthesized and characterized. The microstructure of the composites was investigated by X-ray diffraction. The glass transition temperature of PU nanocomposites, measured using differential scanning calorimeter, increases with increasing volume fraction of OMM. On the other hand, the specifc heat increment, ΔCP, normalized to the weight of the organic fraction, decreases as nanoclay was added. Therefore a corresponding increase of the rigid amorphous fraction of PU nanocomposites with nanoclay was observed.
Clay-nanocomposites polyurethane adhesives: Analysis of the rigid amorphous fraction
ESPOSITO CORCIONE, Carola;GRECO, Antonio;MAFFEZZOLI, Alfonso
2008-01-01
Abstract
In this work nanocomposite adhesives for flexible packaging obtained using an organically modified montmorillonite (OMM) in a polyurethane matrix were synthesized and characterized. The microstructure of the composites was investigated by X-ray diffraction. The glass transition temperature of PU nanocomposites, measured using differential scanning calorimeter, increases with increasing volume fraction of OMM. On the other hand, the specifc heat increment, ΔCP, normalized to the weight of the organic fraction, decreases as nanoclay was added. Therefore a corresponding increase of the rigid amorphous fraction of PU nanocomposites with nanoclay was observed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
