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Unified modeling technique for high‐viscosity, melt‐phase, condensation polymer reactors
Author(s) -
Sampson Kendree J.,
Neogi Swati,
Medlin James C.
Publication year - 1993
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.1993.070470611
Subject(s) - mixing (physics) , viscosity , mass transfer , thermodynamics , condensation , complete mixing , polymer , statistical physics , materials science , mechanics , chemistry , physics , organic chemistry , quantum mechanics
Mathematical models for chemical reaction and mass transfer occurring in the manufacture of high‐viscosity condensation polymers are considered. A preliminary study indicates that several diverse models can be represented using a single formula based upon an effectiveness factor. The effectiveness factor is shown to depend upon a ratio of time scales of mixing and reaction. The formula giving the effectiveness factor in terms of the time scales ratio is shown to depend upon mixing assumptions only. Starting with a mixing‐cell model, a new modeling framework is developed and shown to include the previous models as special cases. The framework is free of inherent mixing assumptions and can be applied to a wide variety of situations once the mixing characteristics are specified. © 1993 John Wiley & Sons, Inc.