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Calorimetric study of blends of low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) temperature rising elution fractionation (TREF) fractions

✍ Scribed by Pablo L. Joskowicz; Alberto Muñoz; Julio Barrera; Alejandro J. Müller

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 598 KB
Volume: 196
Category: Article
ISSN: 1022-1352
DOI: 10.1002/macp.1995.021960128

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✦ Synopsis

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 C H 3 / l ~ C) and high (21 C H 3 / l W C) short-chain branching content were solution-mixed with the LDPE central fraction (16 CH3/1000 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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