Interface-Dependent Mechanical Properties in MWNT-Filled Polycarbonate

Abstract

Static tensile tests, dynamic mechanical analysis as well as electron microscopy were used to characterize the macromechanical properties of MWNT-filled polycarbonate composites. Meanwhile the behavior of the nanotube/polymer interfaces was examined by changing nanotube contents and measuring electrical conductivity and dielectric spectroscopy. When the interface achieved the state of percolation (2 mass% MWNT), strain of fracture of MWNT-filled polycarbonate composites reached a peak of 9.3%, elastic modulus increased 30% comparing to pure polycarbonate and damping ratio bottomed out.