Abstract
Differential scanning calorimetry and X-ray analysis were used to study long-term low-temperature annealing of low-density polyethylene (LDPE) with a high degree of branching. It was found that for branced PE long-term annealing causes irreversible structural changes even at relatively low temperatures (85°), which is not typical of linear PE. It was assumed that long-term low-temperature annealing results in the formation of domains of mesomorphous ordering in the amorphous phase of branched PE.
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