CRYSTALLIZATION BEHAVIOR OF THE NOVEL LLD PE AND ITS MOLECULAR CHARACTERISTICS

Crystallization behavior of the single-site catalysed ethylene-octene- 1 copolymer (LLDPE) has been investigated. The results indicate that t he distribution of branches in the novel LLDPE is more homogeneous and regular than that in materials prepared with Ziegler-Natta catalysts. However, there is still some variability in inter-branch separation. The work has confirmed that branches trend to be excluded from crystal s formed by branched polyethylene, but it is dependent on branch distr ibution and crystallization dynamics.