A Comparison Study on the Effect of PEI-functionalized Fe3O4 Nanoparticles on Termal Properties of PLA

In this work, Fe3O4 nanoparticles were functionalized with hyperbranched polyethylenimine (PEI). The neat Fe3O4 nanoparticles (MNP) and functionalized Fe3O4 (MNP@PEI) were separately incorporated into a polylactic acid (PLA). Effects of the functionalization of Fe3O4 on the thermal and flame resistance properties of the developed PLA nanocomposites were investigated. It is found that the properties of the PLA nanocomposites were strongly under influence of the modification of the MNP. Additional PEI within MNP@PEI would make more interaction with the PLA matrix chains and caused better thermal and flame resistance properties. The heat barrier effect and high nitrogen content of the MNP@PEI nanoparticles were found to be responsible for the improvement of the thermal and flame resistance properties.

A Comparison Study on the Effect of PEI-functionalized Fe3O4 Nanoparticles on Termal Properties of PLA Keywords:

Nanocomposite , Polylactic acid , Polyethylenimine , Magnetic nanoparticles