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Diffusion of butanediol in poly(butylene terephthalate) (PBT) melt and analysis of pbt polymerization reactor with surface renewal
Author(s) -
Yoon Kwan Han,
Park O. Ok
Publication year - 1995
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760350810
Subject(s) - materials science , polymerization , diffusion , ethylene , polymer chemistry , chemical engineering , butanediol , polyethylene terephthalate , thermal diffusivity , composite material , polymer , catalysis , organic chemistry , thermodynamics , chemistry , physics , fermentation , engineering
A reactor with surface renewal, originally designed for poly(ethylene terephthalate) (PET) polymerization, was applied for poly(butylene terephthalate) (PBT) polymerization. A comprehensive model including side reactions was developed and compared with the experimental results. The diffusivity of butanediol (BD) in PBT melt was measured separately by desorption experiments ( D b − 1.08 × 10 6 exp(−32600 / RT) (m 2 /min)). Optimum operating temperature for PBT polymerization was found to be around 250°C in order to avoid degradation.