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Mathematical model for a semicontinuous esterification process with recycle between terephthalic acid and ethylene glycol
Author(s) -
Yamada T.
Publication year - 1992
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.1992.070450420
Subject(s) - diethylene glycol , terephthalic acid , ethylene glycol , saponification , oligomer , degree of polymerization , polymerization , ethylene , melting point , materials science , chemical engineering , polymer chemistry , degree (music) , organic chemistry , chemistry , polyester , polymer , catalysis , physics , engineering , acoustics
Abstract A new mathematical model has been derived for a semicontinuous recycle esterification process that consists of two reactors, one has the recycle flow to or from another and the discharge flow of the main flow and another has only recycle flow without the discharge flow. This model can give useful information about the optimum design of a new plant through the predictions of oligomer characteristics such as concentrations of carboxyl and hydroxyl end groups, number‐average molecular weight, number‐average degree of polymerization, esterification and saponification degree, diethylene glycol content, melting point, concentrations of ethylene glycol and water in the vapor phase, and so on.