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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
Author(s) -
Joskowicz Pablo L.,
Muñoz Alberto,
Barrera Julio,
Müller Alejandro J.
Publication year - 1995
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1995.021960128
Subject(s) - low density polyethylene , linear low density polyethylene , polyethylene , fractionation , differential scanning calorimetry , branching (polymer chemistry) , chemistry , elution , materials science , fraction (chemistry) , polymer chemistry , chromatography , organic chemistry , thermodynamics , physics
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.