6533b7d5fe1ef96bd1265231

RESEARCH PRODUCT

Reprocessing of PLA/graphene nanoplatelets nanocomposites

Roberto ScaffaroMaria Chiara MistrettaFiorenza SuteraLuigi Botta

subject

Materials sciencePolymers and PlasticsIntrinsic viscosityPlastics extrusion02 engineering and technology010402 general chemistry01 natural sciencesArticlePoly(lactic acid) (PLA)lcsh:QD241-441Exfoliated graphite nano-plateletsRheologylcsh:Organic chemistrynanocompositesGraphene nanoplatelets (GnP)RecyclingNanocompositeNanocompositerecycling; nanocomposites; graphene nanoplatelets (GnP); poly(lactic acid) (PLA)General Chemistry021001 nanoscience & nanotechnology0104 chemical sciencesSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialiChemical engineeringGraphene nanoplatelets (GnP); Nanocomposites; Poly(lactic acid) (PLA); RecyclingParticleDegradation (geology)0210 nano-technologyDispersion (chemistry)

description

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.

yearjournalcountryeditionlanguage
2017-12-24
10.3390/polym10010018http://hdl.handle.net/10447/260377