The mechanical and conductivity of magnetic polymer nanocomposite (MPNC) of nickel zinc (NiZn) ferrite nanoparticles
incorporated with poly(lactic acid) (PLA) and liquid natural rubber (LNR) as compatibilizer is reported. The matrix was prepared
fromPLAandLNR in the ratio of 90 : 10.TheMPNCof PLA/LNR/NiZn ferrite thenwas prepared viaThermoHaake internalmixer
using melt-blending method from different filler loading from 1–5wt% NiZn ferrite. The result of tensile tests showed that as the
filler loading increases, the tensile strength also increases until an optimum value of filler loading was reached. Young’s modulus,
tensile strength, and elongation at break have also increased. The study proves that NiZn ferrite is an excellent reinforcement filler
in PLA/LNR matrix. The optimum thermal conductivity of PLA/LNR composites achieved with (4wt% NiZn) due to the effective
combination of NiZn-NiZn conductive networks. The scanning electron micrograph (SEM) reveal that the aspect ratio and filler
orientation in the PLA/LNR matrix also strongly promoted interfacial adhesion between the filler and the matrix to control its
properties.