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Dynamic mechanical properties of binary blends of different polyethylenes. I. Nonisothermal treatment
Author(s) -
Orozco Jose A. Gonzalez,
Rego Jose M.,
Katime Issa
Publication year - 1991
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1991.070420709
Subject(s) - linear low density polyethylene , materials science , high density polyethylene , low density polyethylene , dynamic mechanical analysis , polyethylene , relaxation (psychology) , crystallization , viscoelasticity , composite material , quenching (fluorescence) , modulus , thermal , dynamic modulus , thermodynamics , polymer chemistry , polymer , psychology , social psychology , physics , quantum mechanics , fluorescence
The relaxation processes and thermal properties of a series of blends of a highly linear high‐density polyethylene (HDPE) with several branched high‐density, linear low‐density (LLDPE) and low‐density polyethylenes (LDPE) have been measured. For the sake of comparison, all the samples were subjected to the same thermal treatment, that is, a rapid quenching from the molten state. The mechanical properties have been analyzed, taking into consideration the crystallization behavior of each sample. The existance of cocrystallization provides a bigger change in the dynamic mechanical properties than when segregation takes place. The observed changes in the end‐corrected storage modulus supports this conclusion as well as those associated with the α, β, and γ relaxation temperatures.