Premium
On the characterization of non‐newtonian flow. III
Author(s) -
Sabia Raffaele
Publication year - 1964
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.1964.070080415
Subject(s) - branching (polymer chemistry) , extrapolation , polyethylene , materials science , low density polyethylene , shear rate , activation energy , shear (geology) , shear flow , thermodynamics , shear stress , high density polyethylene , composite material , mechanics , polymer chemistry , rheology , chemistry , organic chemistry , physics , mathematics , mathematical analysis
A method is developed for testing extrapolation procedures of shear stress–shear rate data by using the dependence of the flow activation energy on shear. Three polyethylene types are studied, and it is concluded that the difference in flow activation energy observed between conventional low density polyethylene and high density polyethylene is due mainly to long chain branching.