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Modeling of solid-state polymerization of poly(ethylene terephthalate)

✍ Scribed by Chang-Kwon Kang

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
214 KB
Volume
68
Category
Article
ISSN
0021-8995

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✦ Synopsis

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.

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