Dependencies of Material Properties on Averaged Molecular Weight of a Recycled High Density Polyethylene

We studied the dependencies of material properties on several types of average molecular weight for a recycled high density polyethylene that was obtained from PET-bottle caps. We discussed the correlations of the average molecular weights with the density, melt index, high load melt index, yield stress, and elongation at break. We concluded that these material properties of the recycled HDPE are similar to those of the virgin HDPE with the identical average molecular weight.