Effect of Particle Functionalization on Structural and Dielectric Properties of Flexible TPU/BaTiO ₃ /MWCNTs Composite Films

Flexible, low-cost thermoplastic polyurethane (TPU) composite films with functionalized BaTiO3 (BT) and multiwall carbon nanotubes (MWCNTs) are prepared by solution casting tested as dielectric materials. Different volume content loadings of BT filler (between 10 80 vol%) 0.12 vol% MWCNTs applied. The effects particle functionalization on the structural, mechanical, energy storage properties studied Fourier infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), well puncture measurements. It is found that significantly affect hydrogen bonding within polymer matrix, have a huge impact mechanical properties. optimal concentration (30 MWCNTs) giving highest constant 30.28 breakdown strength 42 kV mm−1 determined.