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On the real molecular weight of polyethylene oxide of high molecular weight in water
Author(s) -
Wolff Claude
Publication year - 1980
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450580513
Subject(s) - polyethylene oxide , drag , solvent , turbulence , viscosity , polyethylene , oxide , materials science , thermodynamics , work (physics) , chemical engineering , polymer chemistry , chemistry , organic chemistry , composite material , physics , polymer , engineering
It is shown that water is close to being a theta solvent for polyethylene oxide which is highly aggregated in this solvent. This result is in agreement with the behaviour observed by hydrodynamic measurements (turbulent drag reduction and concentration and shear dependence of the viscosity). With the molecular weight correction proposed in this work, the onset drag reduction data obtained with Polyox agree well with Virk's theory.