Abstract: The physical, mechanical, and rheological properties, molecular weight and distribution, and degree of branching of a linear low-density polyethylene film-forming resin DFDA7042H for films were studied and compared with imported counterparts. It was found that their physical and tribological properties were comparable. However, DFDA7042H possessed a little higher molecular weight, broader molecular weight distribution, lower shear viscosity, which led to better processability. In addition, the haze of the film based on DFDA7042H was lower, thus higher transparency. The suitable dynamic friction factor of the film ensured its slip property.

Key words: high openings performance, linear low density polyethylene, microstructure, rheological behavior, film