LLDPE/LDPE Blends.II.Viscoelastic Properties in Solid State

摘要

The effect of a small addition of a low density polyethylene into a linear low density polyethyene (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 #alpha# 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.