Key Words:Crystal morphology; etching; nanocomposites; nucleation
Abstract:The nucleation activation of TiO2 nanoparticles in the linear low-density polyethylene (LLDPE)/low-density polyethylene (LDPE)/TiO2 nanocomposites prepared by non-isothermal crystallization, the spherical crystals morphology of the etched LLDPE/LDPE and LLDPE/LDPE/TiO2 composites were investigated by differential scanning calorimetry (DSC) and field-emission scanning electron microscopy (FE-SEM), respectively. The results showed that the heterogeneous nucleation activation of TiO2 nanoparticles was accelerated by the fast cooling rate. The spherical crystals in the LLDPE/LDPE and LLDPE/LDPE/TiO2 composites were ascribed to the same crystal structure. It was worth to note that there was distinct difference between the morphology of the cocrystallization LLDPE/LDPE crystals and that of the independent crystallization LLDPE/LDPE crystals.
Volume:30
Issue:8
Translation or Not:no