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Modeling of Polyamide 66 Solid State Polymerization: Drawing a Chemical Reaction Scheme
Author(s) -
Filgueiras Viviane,
Vouyiouka Stamati.,
Konstantakopoulou Maria O.,
Boussia Anastasia C.,
Papaspyrides Constantine D.,
Lima Enrique Luis,
Pinto José Carlos
Publication year - 2015
Publication title -
macromolecular reaction engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 32
eISSN - 1862-8338
pISSN - 1862-832X
DOI - 10.1002/mren.201400033
Subject(s) - polyamide , thermodynamics , polymerization , kinetics , diffusion , polymer , kinetic energy , chemical kinetics , chemistry , polymer chemistry , particle (ecology) , materials science , organic chemistry , physics , quantum mechanics , oceanography , geology
A chemical reaction scheme is proposed here to describe the polyamide 66 (PA 66) solid state polymerization (SSP) with effective kinetic parameters. The main objective of the suggested model is to predict the maximum molecular weight attainable at each SSP isotherm, which is in turn determined by the occurrence of polymer chain degradation coupled to other important side reactions. Accordingly, a number of side reactions have been firstly considered, based on which a comprehensive particle model was constructed to predict PA 66 kinetics, equilibrium, and transport phenomena. The SSP model parameters were estimated with a maximum‐likelihood estimator, using data measured under kinetic‐ and diffusion‐controlled process conditions for reaction temperatures in the range of 160–200 °C and reaction times up to 8 h. Calibration models were also developed to allow the determination of PA 66 solution viscosities.