Flame-Retardant PET-PC Blends Compatibilized byOrganomodified Montmorillonites

摘要

Flame retardant PET nanocomposites and compatibilized PET/PC blends were obtained using a montmorillonite modified by a methyl-triphenoxyphosphonium salt. The organomodified MMT was shown to exfoliate into the PET matrix and to act as a compatibilizer between PET and PC in the blends. The combination of this nanofiller with triphenyl phosphite gives good mechanical properties and reaction to fire performance, including V-0 rating in the UL94 test. These results illustrate the advantage of combining various formulation strategies to obtain engineering polymeric materials, even from recycled plastics having intrinsically low performances (recycled PET and PC in this case).