Melt viscosities of molten poly(ethylene terephthalate) calculated from modified Bueche‐Harding equation | Zendy

Gregory D. R. | Zendy

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Melt viscosities of molten poly(ethylene terephthalate) calculated from modified Bueche‐Harding equation

Author(s) -

Gregory D. R.

Publication year - 1972

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.1972.070160617

Subject(s) - viscosity , poly ethylene , materials science , thermodynamics , ethylene , newtonian fluid , shear (geology) , shear viscosity , rheology , polymer chemistry , composite material , polymer science , chemistry , organic chemistry , physics , catalysis

The semiempirical Bueche‐Harding equation was successfully modified to allow the calculation of experimentally verified melt viscosities of molten poly(ethylene terephthalate) (PET) for shear stresses > 9.65 × 10 5 dynes/cm 2 by accounting for the definite Newtonian region in the flow behavior of PET for shear stresses lE; 9.65 × 10 5 dynes/cm 2 . Melt viscosity values calculated from the modified Bueche‐Harding equation agreed within ±12% of the values calculated from the equations based on experimental data.

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