Research in Non-Isothermal Crystallization Kinetics of LDPE and Inorganic Particle Composite Films

Abstract

The low density polyethylene (LDPE)/ethylene-octene copolymer (POE) blend films and LDPE/POE/inorganic particle composite films were prepared. By means of DSC method, the crystallization capability and the non-isothermal crystallization kinetics of LDPE composite films were investigated, the results show that the addition of DE can reduce the interfacial free energy of the crystal and the active energy of a nucleus, resulting in stable nuclei can be formed at lower supercooling, which makes the polymer crystallized successfully at high temperatures. By selecting data processing method of Mo ZS and modified Jeziorny, the results indicate that the DE play a role of heterogeneous nucleation agent in the process of crystallization and increased the crystalline rate of LDPE.