Kinetics of Mass Transfer in the Melt Polycondensation of Poly(Ethylene Terephthalate)
作者:
Gerald Rafler,
Gerhard Reinisch,
Eckhard Bonatz,
Heinz Versaumer,
Herbert Gajewski,
Hans-Dieter Sparing,
Karin Stein,
Christoph Mühlhaus,
期刊:
Journal of Macromolecular Science: Part A - Chemistry
(Taylor Available online 1985)
卷期:
Volume 22,
issue 10
页码: 1413-1427
ISSN:0022-233X
年代: 1985
DOI:10.1080/00222338508063344
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
For a four-parameter reaction-mass transport model of melt polycondensation, the constants of polycondensation, thermolysis, and diffusion were determined by means of experiments in thin-layer polycondensation. Based on these constants, the convectional mass transport and efficient melt thickness in polycondensation systems under conditions of compelled mixing can be estimated. However, for stirred polycondensation systems a reaction-mass transfer model proves more suitable. The constants of polycondensation and thermolysis obtained by the diffusion model can be transferred to the reaction-mass transfer model. Thus, only the mass transfer coefficient has to be determined.
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