Preparative temperature rising elution fractionation (TREF) on commercial linear low density polyethylene (LLDPE) and low density polyethylene (LDPE) samples has been performed. The resulting fractions exhibited a bimodal and a unimodal distribution, respectively. Two LLDPE fractions of low (5 CH 3 /1000 C) and high (21 CH 3 /1000 C) short‐chain branching content were solution‐mixed with the LDPE central fraction (16 CH 3 /1000 C). Indirect evidence based on differential scanning calorimetry results suggest that the fractions with similar branch contents are more miscible than those with dissimilar ones.
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Joskowicz et al. (1995) studied this question.
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