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Correlation of rheological and mechanical properties for blends of recycled HDPE and virgin polyolefins
Author(s) -
Miller Paul,
Sbarski Igor,
Kosior Edward,
Masood Syed,
Iovenitti Pio
Publication year - 2001
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.2212
Subject(s) - high density polyethylene , materials science , rheology , composite material , viscosity , relative viscosity , polyethylene , linear low density polyethylene , relative density , branching (polymer chemistry) , rheometry , stiffness , microstructure
This article investigates the rheological and mechanical properties for blends of recycled high‐density polyethylene (HDPE) and virgin polyolefins and attempts to correlate relative shear viscosity and relative stiffness for these blends. These virgin polyolefins comprised a wide variety of flow characteristics, from high‐flow injection molding, low‐density and linear low‐density polyethylene to very low‐flow film blowing grade high‐density polyethylene. It can be seen that there is a variety of behaviors for the relative viscosity and relative stiffness of the blends studied. Relative viscosity and relative stiffness can largely be described by linear curves. This article categorizes these parameters according to the gradient of these linear curves. The difference between the relative viscosity gradient and relative stiffness gradient is identified as a product of a variety of factors, including branching content, viscosity level, and the nature of any side units. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 3505–3512, 2001