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A temperature rising elution fractionation study of short chain branching behavior in ultra low density polyethylene
Author(s) -
Karoglanian Serop A.,
Harrison Ian R.
Publication year - 1996
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.10460
Subject(s) - materials science , branching (polymer chemistry) , low density polyethylene , fractionation , polyethylene , elution , composite material , analytical chemistry (journal) , chemical engineering , chromatography , chemistry , engineering
The properties of ultralow‐density polyethylenes (ULDPE) have been studied using temperature rising elution fractionation (TREF) as both an analytical and preparative process. TREF was employed to determine the short chain branch distribution and to fractionate the polymer into fractions that enabled further properties studies, including carbon‐13 nuclear magnetic resonance, differential scanning calorimetry, dynamic mechanical thermal analysis, density gradient studies, gel permeation chromatography, analytical TREF, and some simple tensile tests. The results of these studies are reported here.