Synthesis and thermodynamics parameters of alpha iron nanoparticles/polystyrene composite

Alpha iron nanoparticles with about 20~100 nm size were obtained in the W/O microemulsion system. The iron nanoparticles/PS composites were synthesized through a bulkpolymerization method using the dispersed mixed liquid including styrene and Fe nanoparticles modified with organic surface agent in advance. XRD, TEM, FTIR, SEM and TG-DSC were used respectively to measure the properties of iron nanoparticles, the microstructure of as-prepared composite samples, the distribution of iron nanoparticles in PS and the thermodynamic parameters of as-prepared composites. These studies reveal that the degradation and the enthalpy change of composites would increase with the doping dose of alpha iron nanoparticles increasing, but the temperature of composites degradation would reduce．