LLDPE/LDPE blends. II. Viscoelastic properties in solid state

The effect of a small addition of a low density polyethylene into a linear low density polyethylene (ethylene-1-hexene copolymer; density = 900 kg m−3) on the linear and nonlinear viscoelastic properties in the solid state were studied. It was found that the addition of the low density polyethylene leads to a well-organized crystalline structure. Consequently, the location of α relaxation process is shifted to higher temperature or longer time. Furthermore, the mechanical nonlinearity of the blend is found to be more prominent than that of the pure linear low density polyethylene.