This work reports a study on the effect of multiple reprocessing on the properties of poly(lactic acid) (PLA) filled with graphene nanoplatelets (GnP) compared to the melt reprocessed neat polymeric matrix. In particular, morphological, X-Ray Diffraction and Micro-Raman analyses, intrinsic viscosity measurements, thermal, rheological and mechanical tests were carried out on materials reprocessed up five times by means of a single screw extruder. The results indicated that the presence of GnP decreased the degradation rate as a function of the reprocessing cycles in comparison with the neat PLA that, on the contrary, showed a more drastic reduction of the molecular weight. Moreover, the reprocessing improved the particle dispersion and reduced the presence of GnP aggregates.

Botta, L., Scaffaro, R., Sutera, F., Mistretta, M. (2018). Reprocessing of PLA/graphene nanoplatelets nanocomposites. POLYMERS, 10(1) [10.3390/polym10010018].

Reprocessing of PLA/graphene nanoplatelets nanocomposites

Botta, Luigi;Scaffaro, Roberto;Sutera, Fiorenza;Mistretta, Maria Chiara
2018-01-01

Abstract

This work reports a study on the effect of multiple reprocessing on the properties of poly(lactic acid) (PLA) filled with graphene nanoplatelets (GnP) compared to the melt reprocessed neat polymeric matrix. In particular, morphological, X-Ray Diffraction and Micro-Raman analyses, intrinsic viscosity measurements, thermal, rheological and mechanical tests were carried out on materials reprocessed up five times by means of a single screw extruder. The results indicated that the presence of GnP decreased the degradation rate as a function of the reprocessing cycles in comparison with the neat PLA that, on the contrary, showed a more drastic reduction of the molecular weight. Moreover, the reprocessing improved the particle dispersion and reduced the presence of GnP aggregates.
2018
Settore ING-IND/22 - Scienza E Tecnologia Dei Materiali
Botta, L., Scaffaro, R., Sutera, F., Mistretta, M. (2018). Reprocessing of PLA/graphene nanoplatelets nanocomposites. POLYMERS, 10(1) [10.3390/polym10010018].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/260377
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