Effect of exfoliated graphite nanoplatelets’ size on the phase structure, electrical, and barrier properties of poly(trimethylene terephthalate)‐based nanocomposites

摘要: This article describes the preparation process of two series poly(trimethylene terephthalate) (PTT) nanocomposites with an addition exfoliated graphite nanoplatelets different platelets’ size (50 and 500 μm). The influence their on processing, physicochemical properties, morphology and, most importantly, electrical conductivity barrier properties thin polymer films has been studied. It was clearly found that smaller platelets enabled to obtain conductive a nanoplatelet content 0.3-0.5 wt.%. However, nanocomposite based PTT 0.5 wt% EG flake μm proved be nonconductive. At same time demonstrated more uniform distribution in matrix, which confirmed by means scanning transmission electron microscopies, thus giving samples question respect CO2 O2. Moreover, it shown both nanofillers did not have significant phase transition temperatures long period. They caused however slight decrease crystallinity is evidence antinucleating character those matrix. POLYM. ENG. SCI., 55:2222–2230, 2015. © 2015 Society Plastics Engineers