Preparation and characteristic of magnetic LDPE/Fe₃O₄ nano-composite films

Magnetic LDPE/Fe₃O₄ composite films have been successfully prepared using conventional melt blending technique in a sigma internal mixer. The magnetic Fe₃O₄ nanoparticles using in compositing were perpared by chemical co-precipitation method and characterized by TEM, XRD, FTIR and their magnetism was analyzed by VSM. The LDPE/Fe ₃O₄ composite films were measured with SEM, XRD, FTIR and VSM. The magnetic measurement showed that both the Fe₃O₄ nanoparticles and the composite films made through doping of Fe ₃O₄ nanoparticles in original LDPE displayed a super-paramagnetic property. And other results showed that the composite films were dispersed homogeneously and the structure of original LDPE were not destroyed with the doping of Fe₃O₄ nanoparticles.