The polyethylene terephthalate/carbon nanotube (PET/CNT) nanocomposites were prepared by melt mixing using a twin screw\nextruder. CNT content was varied up to 5 wt. %. Morphology as well as dynamic mechanical, calorimetric, and rheological\nproperties of the PET/CNT nanocomposites was investigated. Morphological studies indicated that CNT bundles are regularly\ndistributed within the polymer matrix creating a connected network structure which significantly affects the nanocomposite\nproperties. Dynamic mechanical thermal analysis revealed increase in storage and loss modules of the investigated PET\nnanocomposites by increasing the content of CNTs. Differential scanning calorimetry results demonstrated increase in\ncrystallinity of the investigated PET nanocomposites upon addition of the nanofiller. Rheological studies demonstrated that\nCNT addition up to 5 wt. % caused increment in complex viscosity and storage modulus. Rheological percolation threshold was\nobserved to be 0.83 wt. % of CNT concentration, respectively.
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