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Modeling of solid‐state polymerization of poly(ethylene terephthalate)
Author(s) -
Kang ChangKwon
Publication year - 1998
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/(sici)1097-4628(19980502)68:5<837::aid-app15>3.0.co;2-n
Subject(s) - ethylene , polymer chemistry , polymerization , poly ethylene , thermodynamics , materials science , chain transfer , chain (unit) , polymer , reaction rate constant , volume (thermodynamics) , chemistry , kinetics , radical polymerization , organic chemistry , physics , composite material , astronomy , quantum mechanics , catalysis
A mathematical model for solid‐state polymerization of poly(ethylene terephthalate) was developed. The effects of temperature and chain entanglement on chain mobility were considered to estimate the rate constants of chemical reactions. The diffusivities of volatile byproducts could be determined using the free volume theory. 13,14 The model predictions were validated with experimental data reported in the literature. In addition, assuming that the concentration profiles of volatile byproducts in spherical particles are described by a sinusoidal function, the mass transfer rate of the byproducts at a given time could be derived as an ordinary differential equation that can be easily treated. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 68:837–846, 1998