Thermal and dielectric properties of two-dimensional layered MXene (Ti3C2Tx) filled linear low-density polyethylene composites

Abstract

Exploring a new material MXene-based polymer composite with high-dielectric constant and low-dielectric loss is important because of their potential applications in modern electronics and power systems. The two-dimensional layered Ti3C2Tx(MXene)/linear low-density polyethylene (LLDPE) composite have been fabricated via the solution casting method in the weight ratio of 1 to 10 of Ti(3)C(2)T(x)to the total weight of the polymer matrix. The formation of Ti3C2Tx filled LLDPE composite is revealed by the X-ray diffraction, Field Emission Scanning Electron Microscope (FESEM), Fourier-transform infrared, differential scanning calorimetry, and thermogravimetric analysis investigations. The room temperature transport behavior of the composites was studied by impedance spectroscopy technique within the frequency range of 5 Hz-5 MHz. The composites show significantly improved real dielectric permittivity of and low-dielectric dissipation loss of the composite (maximum epsilon ' = 9.35 x 10(3) with tan delta = 0.48 at 5 Hz at 25 degrees C) at 5 phr of Ti3C2Tx loading. This work gives an auspicious idea to build polymer films with improved dielectric permittivity and low-loss tangent for potential application in flexible electronic materials.